YÖKDİL FEN DENEME SINAVI
SORULARIN TAMAMI ÖSYM’NİN DAHA ÖNCEKİ YILLARDA YAPTIĞI SINAVLARDAN ALINMIŞTIR.
* Required
Email address
*
Your email
Adı ve Soyadı
*
Your answer
Telefon Numarası
*
Your answer
KVK Kanunu’nda tanımlanan özel nitelikli kişisel verilerim de dahil olmak üzere ilgili kişisel verilerimin işlenmesine, ilgili süreç kapsamında işlenme amacı ile sınırlı olmak üzere kullanılmasına ve paylaşılmasına, gereken süre zarfında saklanmasına açık rızam olduğunu ve bu hususta tarafıma gerekli aydınlatmanın yapıldığını; işbu metni okuduğumu ve anladığımı beyan ediyor, Kişisel Verilerin Korunması Kanunu çerçevesinde açık rızam bulunduğunu onaylıyorum.
*
kabul ediyorum.
Required
KVK Kanunu’nda tanımlanan özel nitelikli kişisel verilerim de dahil olmak üzere ilgili kişisel verilerimin işlenmesine, ilgili süreç kapsamında işlenme amacı ile sınırlı olmak üzere kullanılmasına ve paylaşılmasına, gereken süre zarfında saklanmasına açık rızam olduğunu ve bu hususta tarafıma gerekli aydınlatmanın yapıldığını; işbu metni okuduğumu ve anladığımı beyan ediyor, Kişisel Verilerin Korunması Kanunu çerçevesinde açık rızam bulunduğunu onaylıyorum.
*
kabul ediyorum.
Required
1) This magazine is designed to help satellite equipment buyers make more ___________ purchasing decisions and keep ahead of new developments.
representative
obscure
foreseen
informed
indifferent
Clear selection
2) I couldn’t follow the section on quantum computers, but the rest is ___________ easy to understand.
comparatively
permanently
consequently
sensibly
comprehensibly
Clear selection
3) The cells of all living organisms have the ___________ to harvest energy from the breakdown of organic fuel molecules.
amount
clarity
performance
reliance
ability
Clear selection
4) Scientists suggest that huge amounts of greenhouse gases will be ___________ into the atmosphere if rising temperatures cause the atmosphere permafrost to melt.
produced
accelerated
disrupted
released
joined
Clear selection
5) A great many so-called useful gadgets sound great in theory but ___________ in practice, don’t you agree?
make do
pull down
turn over
fall short
keep up
Clear selection
6) The United States government is about to start monitoring the air ___________ major cities for biological weapons ___________ looking for bacteria and viruses in the air filters that now monitor pollution.
of / on
at / towards
out of / with
in / by
from / through
Clear selection
7) The history of science ___________ by a chain of advances in technology and knowledge that ___________ each other.
had been marked / are always complementing
has been marked / always complemented
is marked / have always complemented
is being marked / would always complement
will have been marked / had always complemented
Clear selection
8) A theory ___________ only when a hypothesis ___________ by consistent results from many observations or experiments.
may have been developed / was being supported
can be developed / has been supported
will be developed / was supported
has been developed / had been supported
had been developed / might have been supported
Clear selection
9) The first laser ___________ in 1960 by Maiman almost half a century after the publication in 1916 of Einstein’s theory of radiation which ___________ the possibility of laser operation.
has been demonstrated / had shown
had been demonstrated / showed
was demonstrated / showed
demonstrates / was shown
was being demonstrated / shows
Clear selection
10) If the discovery ___________, it ___________ speculation that the Galaxy is teeming with life.
had been confirmed / would fuel
will be confirmed / will have fuelled
is confirmed / will fuel
has been confirmed / has fuelled
was confirmed / would have fueled
Clear selection
11) For a domestic staircase, an additional form of support ___________ a “carriage”, that is a beam under the centre of the stairs, is not usually necessary.
in case of
so that
such as
according to
either
Clear selection
12) ___________ the span of a suspension bridge increases, the structure develops a “gravity” stiffness due to its own weight.
As
However
Whereas
While
In case
Clear selection
13) Traffic congestion is frequently not caused by overloading ___________ by small disturbances in the flow.
as
but
as well as
more
than
Clear selection
14) Many of the most important developments in absolute dating ___________ World War II have come from the use of “radioactive clocks”.
since
during
until
before
up to
Clear selection
15) It was not long ___________ the design deficiencies of the room became apparent.
as if
before
until
wherever
unless
Clear selection
16) A robot is ___________ machine that can make decisions independent of human control.
either
some
such
both
any
Clear selection
17) Laser beams, ___________ are useful in both medicine and industry, were first predicted in science fiction some fifty years ago.
which
what
whatever
where
whose
Clear selection
18) The interiors of planets are totally inaccessible, ___________ what we know about them comes from indirect measurements and analysis.
so
whereas
even though
since
so as
Clear selection
19) Silicon-on-insulator technology, which has helped improve chip performance considerably, has become cheaper and easier to adopt, ___________ a technology called Smart Cut.
apart from
as regards
according to
thanks to
with respect to
Clear selection
20) ___________ the car is equipped with a sophisticated protection system, you know you are fully protected.
Until
Even if
Although
So
Since
Clear selection
21.) Small planes should be safe enough for normal, non-risk-taking people to trust their lives to them. NASA wants (21) ___________ the accident rate by 90 per cent within twenty-five years. The planes should become fast enough for their effective speed to be at least three times (22) ___________ great as that of cars on the highway. The existing small-plane fleet averages 150 knots; that should be raised to 300 knots within a decade, and eventually to 450 knots, (23) ___________ small planes could compete with the jetliners’ speed. The planes should be more efficient and environmentally safer, using less fuel, creating less pollution, and generating less noise. They should be more (24) ___________ in their operations and far simpler to fly, much like cars that vary little from one rental site to another. And they should be radically more reliable and cheaper to maintain – following the example of automobiles, with their quality revolution (25) ___________ the 1980s and 1990s.
to have reduced
reducing
having reduced
to reduce
to have been reducing
Clear selection
22.) Small planes should be safe enough for normal, non-risk-taking people to trust their lives to them. NASA wants (21) ___________ the accident rate by 90 per cent within twenty-five years. The planes should become fast enough for their effective speed to be at least three times (22) ___________ great as that of cars on the highway. The existing small-plane fleet averages 150 knots; that should be raised to 300 knots within a decade, and eventually to 450 knots, (23) ___________ small planes could compete with the jetliners’ speed. The planes should be more efficient and environmentally safer, using less fuel, creating less pollution, and generating less noise. They should be more (24) ___________ in their operations and far simpler to fly, much like cars that vary little from one rental site to another. And they should be radically more reliable and cheaper to maintain – following the example of automobiles, with their quality revolution (25) ___________ the 1980s and 1990s.
as
such
much
so
more
Clear selection
23.) Small planes should be safe enough for normal, non-risk-taking people to trust their lives to them. NASA wants (21) ___________ the accident rate by 90 per cent within twenty-five years. The planes should become fast enough for their effective speed to be at least three times (22) ___________ great as that of cars on the highway. The existing small-plane fleet averages 150 knots; that should be raised to 300 knots within a decade, and eventually to 450 knots, (23) ___________ small planes could compete with the jetliners’ speed. The planes should be more efficient and environmentally safer, using less fuel, creating less pollution, and generating less noise. They should be more (24) ___________ in their operations and far simpler to fly, much like cars that vary little from one rental site to another. And they should be radically more reliable and cheaper to maintain – following the example of automobiles, with their quality revolution (25) ___________ the 1980s and 1990s.
if only
in that
so that
by which
as if
Clear selection
24.) Small planes should be safe enough for normal, non-risk-taking people to trust their lives to them. NASA wants (21) ___________ the accident rate by 90 per cent within twenty-five years. The planes should become fast enough for their effective speed to be at least three times (22) ___________ great as that of cars on the highway. The existing small-plane fleet averages 150 knots; that should be raised to 300 knots within a decade, and eventually to 450 knots, (23) ___________ small planes could compete with the jetliners’ speed. The planes should be more efficient and environmentally safer, using less fuel, creating less pollution, and generating less noise. They should be more (24) ___________ in their operations and far simpler to fly, much like cars that vary little from one rental site to another. And they should be radically more reliable and cheaper to maintain – following the example of automobiles, with their quality revolution (25) ___________ the 1980s and 1990s.
tentative
consistent
deliberate
reluctant
recurrent
Clear selection
25.) Small planes should be safe enough for normal, non-risk-taking people to trust their lives to them. NASA wants (21) ___________ the accident rate by 90 per cent within twenty-five years. The planes should become fast enough for their effective speed to be at least three times (22) ___________ great as that of cars on the highway. The existing small-plane fleet averages 150 knots; that should be raised to 300 knots within a decade, and eventually to 450 knots, (23) ___________ small planes could compete with the jetliners’ speed. The planes should be more efficient and environmentally safer, using less fuel, creating less pollution, and generating less noise. They should be more (24) ___________ in their operations and far simpler to fly, much like cars that vary little from one rental site to another. And they should be radically more reliable and cheaper to maintain – following the example of automobiles, with their quality revolution (25) ___________ the 1980s and 1990s.
at
for
about
of
with
Clear selection
26.) Air pollution is one of the major challenges that most major cities face. The task of cleaning up air pollution, (26) ___________ difficult, is not believed to be insurmountable. Use of fuels that are low in pollutants, such as low-sulphur forms of petroleum; more complete burning of fossil fuels, often in (27) ___________ with a recycling of the pollutants; and the shift to less polluting forms of power generation, such as solar energy (28) ___________ place of fossil fuels – all are methods that can be used for controlling pollution. Over the past few decades, the example of London as well as of some other cities (29) ___________ that 10 years or less is enough to control this problem to a certain extent. In fact, this period is (30) ___________ enough to achieve major improvements in air quality.
though
as if
unless
whether
in case
Clear selection
27.) Air pollution is one of the major challenges that most major cities face. The task of cleaning up air pollution, (26) ___________ difficult, is not believed to be insurmountable. Use of fuels that are low in pollutants, such as low-sulphur forms of petroleum; more complete burning of fossil fuels, often in (27) ___________ with a recycling of the pollutants; and the shift to less polluting forms of power generation, such as solar energy (28) ___________ place of fossil fuels – all are methods that can be used for controlling pollution. Over the past few decades, the example of London as well as of some other cities (29) ___________ that 10 years or less is enough to control this problem to a certain extent. In fact, this period is (30) ___________ enough to achieve major improvements in air quality.
discrimination
combination
purification
authorization
utilization
Clear selection
28.) Air pollution is one of the major challenges that most major cities face. The task of cleaning up air pollution, (26) ___________ difficult, is not believed to be insurmountable. Use of fuels that are low in pollutants, such as low-sulphur forms of petroleum; more complete burning of fossil fuels, often in (27) ___________ with a recycling of the pollutants; and the shift to less polluting forms of power generation, such as solar energy (28) ___________ place of fossil fuels – all are methods that can be used for controlling pollution. Over the past few decades, the example of London as well as of some other cities (29) ___________ that 10 years or less is enough to control this problem to a certain extent. In fact, this period is (30) ___________ enough to achieve major improvements in air quality.
over
at
for
by
in
Clear selection
29.) Air pollution is one of the major challenges that most major cities face. The task of cleaning up air pollution, (26) ___________ difficult, is not believed to be insurmountable. Use of fuels that are low in pollutants, such as low-sulphur forms of petroleum; more complete burning of fossil fuels, often in (27) ___________ with a recycling of the pollutants; and the shift to less polluting forms of power generation, such as solar energy (28) ___________ place of fossil fuels – all are methods that can be used for controlling pollution. Over the past few decades, the example of London as well as of some other cities (29) ___________ that 10 years or less is enough to control this problem to a certain extent. In fact, this period is (30) ___________ enough to achieve major improvements in air quality.
had shown
would have shown
will have shown
has shown
was showing
Clear selection
30.) Air pollution is one of the major challenges that most major cities face. The task of cleaning up air pollution, (26) ___________ difficult, is not believed to be insurmountable. Use of fuels that are low in pollutants, such as low-sulphur forms of petroleum; more complete burning of fossil fuels, often in (27) ___________ with a recycling of the pollutants; and the shift to less polluting forms of power generation, such as solar energy (28) ___________ place of fossil fuels – all are methods that can be used for controlling pollution. Over the past few decades, the example of London as well as of some other cities (29) ___________ that 10 years or less is enough to control this problem to a certain extent. In fact, this period is (30) ___________ enough to achieve major improvements in air quality.
nor
either
as well as
neither
also
Clear selection
31) The north of China, ___________, needs 28 cubic kilometers more water each year.
so long as the Three Gorges dam project is feasible
however the water table beneath Beijing has fallen 59 metres in the past 40 years
as the country is suffering a hydrological crisis that leaves it no choice but to embark on super dam projects
in case the shortfall would be made up with more efficient irrigation
which has two-thirds of the crop land but only one-fifth of the nation’s water
Clear selection
32) Why didn’t you remind him ___________?
not to have overlooked the possibility of a breakdown in the electric circuit
having stabilized the pressure to a reasonable extent
to check the temperature of the solution at regular intervals
the printer will be checked for compatibility with the microcomputer
to have got rid of all the outdated equipment
Clear selection
33) If roof insulation is to be truly effective ___________.
this would not make cavity-wall insulation unnecessary
heating bills are being reduced dramatically
insulation materials and levels are constantly improving
it needs to be at least 200 mm-thick
the reduction in energy consumption has been remarkable
Clear selection
34) Just as railway bridges were the great structural symbols of the 19th century, ___________.
highway bridges became the engineering emblems of the 20th century
the invention of the automobile created an irresistible demand for better roads
most highway bridges carry lighter loads than railway bridges do
the type of bridge needed for cars and trucks is fundamentally different from that needed for trains
an arch bridge curves upwards to support the roadway
Clear selection
35) Since we cannot eliminate natural hazards such as earthquakes, ___________.
we should certainly make ourselves better prepared to deal with them
some companies would claim to have found tailored solutions to them
such a natural catastrophe was quite unexpected
it is rarely covered by an insurance policy
on this occasion financial losses were enormous
Clear selection
36) By the early 1960s, geologists were discovering ___________.
according to which theory the continents of the Earth had once all been joined together
since continental drift actually meant the continents were moving further away from each other
that hot molten rock was seeping up from inside the Earth in giant cracks under the oceans
so that continental drift is now regarded as absolute fact
if the shapes of South America and Africa do indeed fit like pieces of a jigsaw puzzle
Clear selection
37) In science, great thinkers produce mathematical formulas to explain ___________.
why a significant number of mathematicians do not agree
since their formulas have grown increasingly complicated
whether a new scientific renaissance was in the making
although this has always been explained in a very matter-of-fact manner
how things like the pull of gravity work
Clear selection
38) ___________ so that it can get close to hostile forces without being detected.
The precision navigation systems are what impressed most of us
Ideally the periscope would have been eliminated
The new-style submarine has been specifically designed
This is just one of a number of smaller, smarter, stealthier submarines
Previously submarines were not expected to work in shallow, coastal waters
Clear selection
39) The “giant squid” may need to change its name ___________.
that the nickname for the new specimen is the “colossal squid”
since a bigger and meaner relative has been discovered near Antarctica
if it has hooks at the ends of its tentacles
so it could maul sperm whales
though it had grown to a length of 4 metres
Clear selection
40) Although NASA’s budget has risen by 7% over the past two years, ___________.
its responsibilities have grown much faster
the space station programmes are not targets for cutting costs
the programme of unmanned missions could have been discontinued
Earth-observing satellites are of less importance
in fact, the Voyager probes may be cancelled
Clear selection
41) Alternative agriculture has some apparent disadvantages, ___________.
so that most farmers have little or no control over what products they produce
just as the increasing uniformity of global eating habits had become popular
because they were being replaced by huge corporation-owned farms
while, as is the case with plant crops, herds of livestock damage land
but there are real advantages to offset them
Clear selection
42) Some ecologists believe that species diversity will not be reduced significantly as the natural environment becomes permanently impoverished.
Doğal çevre tamamen fakirleşmiş olduğu için, bazı çevrebilimciler, tür çeşitliliğinin hiçbir zaman düzelemeyeceğine inanmaktadırlar.
Tür çeşitliliğinin hiçbir zaman azalmayacağına inanan bazı çevrebilimciler, doğal çevrenin tamamen fakirleştiğini ileri sürmektedirler.
Bazı çevrebilimciler, doğal çevre kalıcı olarak fakirleşirken, tür çeşitliliğinin önemli ölçüde azalmayacağına inanmaktadırlar.
Bazı çevrebilimcilerinin inandığı gibi, tür çeşitliliği hiçbir zaman eski durumuna gelemeyecek, çünkü doğal çevre sürekli bir şekilde yıkıma uğramaktadır.
Doğal çevrenin tamamen fakirleştiğini ileri süren bazı çevrebilimciler, tür çeşitliliğinin hiçbir zaman artmayacağına inanmaktadırlar.
Clear selection
43) With a population of roughly 10 billion people in 2050, some experts predict that the world will need five times more power than we generate today.
Bazı uzmanlara göre, bugün ürettiğimizden beş kat daha fazla elektriğe gereksinim duyacak olan dünyamızın 2050’deki tahmin edilen nüfusu 10 milyardır.
Dünya nüfusunun 2050’de 10 milyar olacağını düşünen bazı uzmanlar, bugün üretilenden beş kat fazla elektriğe gereksinim duyulacağını tahmin etmektedir.
Bazı uzmanlara göre, 2050’de dünya nüfusu 10 milyar olacak, fakat elektrik gereksinimi artarak bugün ürettiğimizin beş katına çıkacaktır.
Bazı uzmanların öngördüğü gibi, 2050’de dünya nüfusu 10 milyara çıkmakla kalmayacak, elektrik gereksinimi de bugünkünün beş katına çıkacaktır.
Bazı uzmanlar, 2050’de yaklaşık 10 milyar nüfusu ile dünyanın, bugün ürettiğimizden beş kat daha fazla elektriğe gereksinimi olacağını tahmin etmektedir.
Clear selection
44) Quaoar, which is a spherical object half the size of Pluto on the edge of the solar system, is thought to consist of ice mixed with rock like a comet.
Kuyruklu yıldızlar gibi, kayayla karışık buzdan oluştuğu sanılan Quaoar, güneş sisteminin kenarında, Plüton’un yarı büyüklüğünde küresel bir cisimdir.
Güneş sisteminin kenarında, Plüton’un yarı büyüklüğünde küresel bir cisim olan Quaoar’ın bir kuyruklu yıldız gibi, kayayla karışık buzdan oluştuğu düşünülmektedir.
Plüton’un yarısı kadar olan ve bazı kuyruklu yıldızlar gibi kaya ve buz karışımından oluştuğu düşünülen Quaoar, güneş sisteminin kenarındaki, küreye benzer cisimlerden biridir.
Kuyruklu yıldızlar gibi kayayla karışık buzdan oluşan Quaoar’ın, güneş sisteminde Plüton’un yarı büyüklüğündeki küresel cisimlerden biri olduğu sanılmaktadır.
Bir kuyruklu yıldız gibi buz ve kaya karışımından oluştuğu sanılan Quaoar’ın güneş sisteminin kenarında, Plüton’un yarı büyüklüğünde küresel bir cisim olduğu düşünülmektedir.
Clear selection
45) The findings of a ten-year study reveal that two species of seahorses have been living in the waters around Britain without anyone realizing they were there.
İngiltere’nin çevresindeki sularda daha önce onların orada yaşadığını kimsenin bilmediği iki tür denizatının olduğu on yıllık bir çalışmayla ortaya çıktı.
On yıllık bir çalışmanın bulguları İngiltere’nin çevresindeki sularda onların orada olduğunu hiç kimsenin fark etmediği iki tür denizatının yaşamakta olduğunu gösteriyor.
İngiltere’nin çevresindeki sularda iki tür denizatının yaşadığını ilk kez ortaya çıkaran on yıllık çalışma bu türlerin hiç fark edilmediğini belirtiyor.
On yıllık çalışmanın sonuçlarına göre İngiltere’nin çevresindeki sularda hiç kimsenin bilmediği iki tür denizatının yaşamakta olduğu bildiriliyor.
İki tür denizatı kimseye belli etmeden İngiltere’nin çevresindeki sularda yaşarken on yıllık bir çalışma onları ortaya çıkardı.
Clear selection
46) Meteorites provide the best available data about the chemical and physical processes that occurred during the first few million years of our solar system’s history.
Güneş sistemimizin tarihinde, ilk birkaç milyon yıl içinde ortaya çıkmış olan kimyasal ve fiziksel oluşumlara ilişkin elde edilebilen en iyi veriler göktaşlarında bulunmaktadır.
Güneş sistemimizin başlangıcındaki birkaç milyon içinde meydana gelmiş kimyasal ve fiziksel süreçlerle ilgili kullanılabilir verilerin en iyileri göktaşlarından elde edilmiştir.
Göktaşlarının sağladığı veriler, güneş sistemimizin tarihinin ilk birkaç milyon yıllık sürecindeki kimyasal ve fiziksel oluşumları anlayabilmemize en büyük katkıyı sağlamıştır.
Güneş sistemimizin ilk birkaç milyon yıllık tarihinde meydana gelen kimyasal ve fiziksel süreçlerle ilgili verilerin en güvenilir olanları göktaşlarından sağlanmıştır.
Göktaşları, güneş sistemimizin tarihinin ilk birkaç milyon yılında meydana gelmiş olan kimyasal ve fiziksel süreçler hakkında mevcut en iyi verileri sağlar.
Clear selection
47) According to some experts, rebuilding efforts commenced in southwestern China following the May 12 earthquake could damage the pandas’ largest remaining natural habitat.
Bazı uzmanlar, pandaların geriye kalan en geniş doğal yaşam alanının 12 Mayıs’ta güneybatı Çin’de meydana gelen depremin ardından başlayan yeniden inşa çalışmalarının sonucunda zarar görmesinden endişe duymaktadır.
Bazı uzmanlar, güneybatı Çin’de 12 Mayıs’ta meydana gelen depremin ardından başlatılan yeniden inşa çalışmalarının pandaların kalan en geniş doğal yaşam alanının zarar görmesine sebep olabileceğini düşünmektedir.
Güneybatı Çin’de 12 Mayıs depreminden bu yana sürdürülen yeniden inşa çalışmalarını gözlemleyen bazı uzmanlar, pandaların kalan en geniş doğal yaşam alanlarının bu yüzden zarar görmesinden endişe etmektedir.
Güneybatı Çin’i 12 Mayıs’ta vuran depremin ardından başlatılan yeniden inşa çalışmaları bazı uzmanlara göre, pandaların kalan en geniş doğal yaşam alanlarını yok edebilirdi.
Bazı uzmanlara göre, güneybatı Çin’de 12 Mayıs depreminin ardından başlatılan yeniden inşa çalışmaları pandaların geriye kalan en geniş doğal yaşam alanına zarar verebilir.
Clear selection
48) Birkaç ay önce Yeni Zelandalı bilim adamları, Antartika ozon tabakasındaki deliğin, ilk kez, Güney Şili’nin bir bölümünü kapladığını bildirdiler.
New Zealand scientists noticed, only a few months ago, that parts of southern Chile were once more affected by the hole in the Antarctic ozone layer.
Scientists in New Zealand realized a few months ago that a hole in the Antarctic ozone layer had, for the first time, spread over parts of southern Chile.
A few months ago scientists from New Zealand reported that the hole in the Antarctic ozone layer had, for the first time, stretched over a part of southern Chile.
According to scientists in New Zealand, the hole in the Antarctic ozone layer had, only a few months previously, stretched over parts of southern Chile.
New Zealand scientists discovered, only a few months ago, that the hole in the Antarctic ozone layer was affecting large parts of southern Chile.
Clear selection
49) Avrupa’nın bir uydu ağı olan Galileo sistemi, Avrupa Birliği’ne üye devletler ve Avrupa Uzay Kurumu tarafından finanse edilmekledir.
The Galileo system forms part of Europe’s network of satellites and is paid for by the member states of the European Union and the European Space Agency.
Europe’s network of satellites, still known as the Galileo system, is paid for by the member states of the European Union and the European Space Agency.
The Galileo system, which receives some financial support from the member states of the European Union and the European Space Agency, is a European network of satellites.
The European Union and the European Space Agency jointly finance Europe’s satellite network known as the Galileo system.
The Galileo system, which is a satellite network of Europe, is financed by the member states of the European Union and The European Space Agency.
Clear selection
50) Avustralya’da sismik olay kayıtları sadece 150 yıl geriye gittiğinden, daha önce neler olduğunu anlamak için günümüzde çeşitli yeni teknikler kullanılmaktadır.
Over the past 150 years, and particularly recently with the advent of so many new technologies, great efforts have been made to find out what seismic activity has created in Australia.
Since Australia has only been keeping records of seismic activity over the past 150 years, there is a need to use these new techniques to find out what happened before.
A variety of new techniques will help to establish what happened in Australia as regards seismic activity before records were kept which has only been during the last 150 years.
Records of seismic activity in Australia have only been kept for 150 years but various new technologies have established what happened before that time.
Since records of seismic activity in Australia only go back 150 years, a variety of new techniques are presently being used to find out what had happened before then.
Clear selection
51) Ateşin keşfinden sonra, insanlar, yüksek sıcaklıklara mâruz kalan belirli kayalar ve minerallerde değişiklikler fark etmeye başladılar.
Following the discovery of fire, people noticed that, under high temperatures, certain changes in rocks and minerals began.
After the discovery of fire, people began to notice changes in certain rocks and minerals exposed to high temperatures.
When fire was discovered, it was noticed that, because of high temperature, certain changes began to take place in rocks and minerals.
With the discovery of fire, man became aware of certain changes which began to take place in rocks and minerals due to high temperatures.
After fire was discovered, human beings became aware that, due to high temperatures, certain rocks and minerals began to change.
Clear selection
52) En eski çağlardan beri kullanılmalarına rağmen alaşımlar, modern teknolojide hâlâ vazgeçilmez bir yere sahiptir ve bilim adamları özel nitelikli yeni alaşımlar geliştirmeye devam etmektedir.
Although alloys have been used since the earliest times, they still have an indispensable place in modern technology, and scientists continue to develop new alloys with special properties.
Alloys have been in use ever since the earliest times and are still essential for modern technology, but scientists are hard at work to develop new alloys with special properties.
Although the use of alloys goes back to the earliest times, scientists still continue to develop new alloys with special properties, which have an indispensable place in modern technology.
Even though alloys were used in ancient times, it is in modern technology that they have been most indispensable and, therefore, scientists continue to work for the development of new alloys with special properties.
Alloys have continuously been in use since ancient times and are still of essential importance for modern technology despite the fact that scientists continue to develop new alloys with special properties.
Clear selection
53) İki galaksinin çarpışması, evrenin kütlesine hükmettiği sanılan görünmez kara maddenin bugüne kadar elde edilen en iyi kanıtını sağlar.
Following the collision of two galaxies, there appears the best evidence so far known of the invisible dark matter which is believed to pervade the mass of the universe.
The collision of two galaxies provides the best evidence yet obtained of the invisible dark matter assumed to dominate the mass of the universe.
The only evidence so far of the invisible dark matter thought to penetrate the mass of the universe is provided by the collision of two galaxies.
It is from the collision of two galaxies that the best evidence yet of the invisible dark matter which is assumed to hold together the mass of the universe has been obtained.
The invisible dark matter which is thought to dominate the mass of the universe is best understood through the evidence provided by the collision of two galaxies.
Clear selection
54) The object of the air traffic control officers is to achieve the highest densities in all parts of the controlled air space that is consistent with safety and the elimination of collision risks. ___________. The amounts of the separation are partly dependent upon the means available for determining accurately the position and course of the various aircraft.
For purposes of air traffic control, air space is divided and then subdivided
Military aviation originally held itself outside any air traffic control but for a long time now this has not been practicable
They, therefore, direct the captains of aircraft so as to maintain adequate vertical and horizontal separation between aircraft
As these are within controlled air space a pilot intending to fly along them must file a flight plan
The “flight progress strip” gives an indication of what is happening to any aircraft in the area
Clear selection
55) There is very little similarity between the chemical composition of river water and that of sea water. The various elements are present in entirely different proportions. ___________. An important reason for the difference is that immense amounts of calcium salts are constantly being withdrawn from sea water by marine animals for the making of shells and skeletons.
The ocean is the earth’s greatest storehouse of minerals
The rivers bring in four times as much calcium as chloride, for example, yet in the ocean the proportions are reversed; there is 46 times as much chloride as calcium
Although the earth is constantly shifting her component materials from place to place, the heaviest movements are always from land to sea, not from sea to land
The annual flow of water seaward is believed to be about 6,500 cubic miles, and this inflow of river water gives the ocean several billion tons of salts
In a single cubic mile of sea water there are, on the average, 166 million tons of dissolved salts
Clear selection
56) Smoke is a mixture of gases and particles. It is usually the product of a combustion process and, in this case, its composition depends on the fuel and the technology used. The main gas involved in smoke processes is carbon dioxide. ___________.
But other gases such as carbon monoxide, nitrogen oxides, hydrocarbons and sulphur dioxide might also be present
The warm air is higher than the cold air so there is little vertical turbulence to carry smoke upwards
Smoke rises because it is part of a stream of hot gases that are normally warmer than the surrounding air
The vertical and straight nature of the smoke plume depends very much on the wind conditions
Wood smoke is often seen in a layer above houses where it is burnt and sometimes it subsequently descends to street level
Clear selection
57) Pouring water into the sea sounds like a harmless scheme. But as regards Florida Bay, it is proving highly controversial. ___________. If increased salinity is the main problem there, the bay’s ecology will benefit from the project. If, however, nitrogen is the problem, increasing the flow of fresh water could make matters worse.
This has had a damaging effect upon the animals that depend on the reef including nearly 600 species of fish
Moreover, economic problems are also at stake, not merely ecological ones
What is causing such an ecological change is a matter of much debate
This is because researchers are divided over whether it will help or hinder the plants and animals that live in the bay
But the bay’s once crystal-clear waters often resemble a dense fog
Clear selection
58) Cappadocia’s extraordinary landscape is partly the result of erosion by water, wind and changes in temperature. ___________. In winter, extreme temperature changes cause the rocks to expand and contract and eventually to disintegrate.
Volcanic activity in central Anatolia is a product of the region’s position
Around 30 million years ago, erupting volcanoes blanketed the region with ash
The region is famous for its bewitching natural formations
Over time, this tuff was worn away, creating distinctive formations
Rainfall and river wear down the tuff and, like the wind, carry away loose materials
Clear selection
59) Antoine Lavoisier was one of the first chemists to try to explain what makes a substance acidic. In 1777, he proposed that oxygen was an essential element in acids. But in 1803, Humphry Davy showed that hydrogen chloride, which dissolves in water to give hydrochloric acid, contains only hydrogen and chlorine. ___________.
Acids react with active metals such as magnesium and zinc to release hydrogen
The Swedish chemist Svante Arrhenius defined acids and bases in terms of the effect these substances have on water
Then chemists realized that hydrogen, not oxygen, must be the essential constituent of acids
Acids and bases were first recognized by simple properties such as taste
The stronger acids are those that lose their protons more easily
Clear selection
60) (I) The simplest type of engine classification is doubtless by reference to the kind of fuel used. (II) Nevertheless, reciprocating engines may be divided more fundamentally into those running on the Otto cycle (spark ignition) and those running on Akroyd’s and Diesel’s cycles (compression ignition). (III) The former are usually used for small scale power generation. (IV) The latter, which burn heavy oil are of two types, slow speed for ships and high speed for motor vehicles. (V) Subsequently, improvements in engine design appeared at an amazing speed.
I
II
III
IV
V
Clear selection
61) (I) The terms velocity and speed are often used interchangeably in ordinary language. (II) But in physics we make a distinction between the two. (III) An aircraft travelling faster than the speed of sound breaks the sound barrier. (IV) Most importantly the term velocity is used to signify both the magnitude of movement and the direction in which an object is. (V) Speed, on the other hand, relates to magnitude only.
I
II
III
IV
V
Clear selection
62) (I) A series of birth defects among frogs in Canada caused great consternation. (II) Most of the defects concern the legs. (III) The deformity is indeed widespread and the cause has not as yet been identified. (IV) Some have extra legs, some legs that are webbed together and some with paralysed legs. (V) In some, missing eyes have also been noticed.
I
II
III
IV
V
Clear selection
63) (I) Wind power is gaining in favour all across Europe. (II) Indeed, it is only the building of a wind-farm that is expensive, running costs are low. (III) There are several reasons for this. (IV) One is that all the technical obstacles that previously existed have been overcome. (V) Another is the increase in efficiency, which means that wind can now compete directly with traditional power-generation methods.
I
II
III
IV
V
Clear selection
64) (I) The remotely operated vehicle (ROV), Jason II, resembles its predecessor, but nearly every component has been much improved. (II) To start with, it is bigger, so it can retrieve more material from the ocean floor. (III) Further, a second manipulator arm has been added which has increased maneuverability and power. (IV) Another advantage is the fact that it can function at greater depths. (V) Indeed, a lot of people feel that the costs of ROV technology are in excess of its usefulness.
I
II
III
IV
V
Clear selection
65) (I) It is convenient to use symbols for the atoms of the different elements. (II) An atomic symbol is a one or two letter notation used to represent an atom corresponding to a particular element. (III) Today we know that atoms are not truly indivisible. (IV) Typically, the atomic symbol consists of the first letter, capitalized, from the name of the element, sometimes with an additional letter from the name in lowercase. (V) For example, chlorine has the symbol Cl.
I
II
III
IV
V
Clear selection
66) Just as railway bridges were the great structural symbols of the 19th century highway bridges became the engineering emblems of the 20th century. The invention of the automobile created an irresistible demand for paved roads and vehicular bridges throughout the developed world. The type of bridge needed for cars and trucks, however, is fundamentally different from that needed for locomotives. Most highway bridges carry lighter loads than railway bridges do, and their roadways can be sharply curved or steeply sloping. To meet these needs, many turn-of-the-century bridge designers began working with a new building material: reinforced concrete, which has steel bars embedded in it. And the master of this new material was Swiss structural engineer Robert Maillart, who designed some of the most original and influential bridges of the modern era.
66) According to the passage, one important way in which highway bridges differ from railway bridges is that they ___________.
are in constant use
can have quite a sharp incline
have to carry heavier loads
must be quite straight
are comparatively short
Clear selection
67) Just as railway bridges were the great structural symbols of the 19th century highway bridges became the engineering emblems of the 20th century. The invention of the automobile created an irresistible demand for paved roads and vehicular bridges throughout the developed world. The type of bridge needed for cars and trucks, however, is fundamentally different from that needed for locomotives. Most highway bridges carry lighter loads than railway bridges do, and their roadways can be sharply curved or steeply sloping. To meet these needs, many turn-of-the-century bridge designers began working with a new building material: reinforced concrete, which has steel bars embedded in it. And the master of this new material was Swiss structural engineer Robert Maillart, who designed some of the most original and influential bridges of the modern era.
67) We understand from the passage that, around the beginning of the 20th century, bridge designers ___________.
were equally involved in the building of roads
followed Robert Maillart’s lead and concentrated on highway bridges
made highway bridges on the same design as railway bridges
made some of the most spectacular bridges of the modern era
began to use a new building material, known as reinforced concrete
Clear selection
68) Just as railway bridges were the great structural symbols of the 19th century highway bridges became the engineering emblems of the 20th century. The invention of the automobile created an irresistible demand for paved roads and vehicular bridges throughout the developed world. The type of bridge needed for cars and trucks, however, is fundamentally different from that needed for locomotives. Most highway bridges carry lighter loads than railway bridges do, and their roadways can be sharply curved or steeply sloping. To meet these needs, many turn-of-the-century bridge designers began working with a new building material: reinforced concrete, which has steel bars embedded in it. And the master of this new material was Swiss structural engineer Robert Maillart, who designed some of the most original and influential bridges of the modern era.
68) We understand from the passage that there was a great demand for highway bridges in the 20th century ___________.
as more and more cars came into use
so many railway bridges were turned into highway bridges
even though the designing and building of them was uninteresting work
but railway bridges continued to attract the best designers
and structural engineers found they could not produce enough bridges
Clear selection
69) William Willcocks was born 150 years ago in a tent beside a canal in northern India, where his father worked for the colonial government. He learnt his engineering in India before heading for Egypt in 1883. There he rose to become director-general of reservoirs, and a legend on the banks of the Nile. He built the first Aswan dam, then the largest in the world, went on to revive the ancient irrigation systems of Mesopotamia, and watered deserts from South Africa to India. But he was deeply troubled by the discovery that much of what his fellow water engineers did in their colonial playgrounds was worse than useless.
69) We gather from the passage that William Willcocks ___________.
traveled all over India in search of fresh water resources
devoted his engineering skills to the improvement of agriculture in India alone
was inspired by his father in choosing engineering as a profession
came from a wealthy and influential English family in India
was an extremely talented irrigation specialist of the late 19th century
Clear selection
70) William Willcocks was born 150 years ago in a tent beside a canal in northern India, where his father worked for the colonial government. He learnt his engineering in India before heading for Egypt in 1883. There he rose to become director-general of reservoirs, and a legend on the banks of the Nile. He built the first Aswan dam, then the largest in the world, went on to revive the ancient irrigation systems of Mesopotamia, and watered deserts from South Africa to India. But he was deeply troubled by the discovery that much of what his fellow water engineers did in their colonial playgrounds was worse than useless.
70) It is clear from the passage that William Willcocks was upset ___________.
to find out that the ancient irrigation systems of
Mesopotamia were inadequate
when he realized the work of his fellow water engineers in the colonies was utterly ineffective
to discover that the water resources of South Africa were not sufficient to irrigate the desert
because the whole responsibility for the construction of the Aswan dam was on his shoulders
Clear selection
71) William Willcocks was born 150 years ago in a tent beside a canal in northern India, where his father worked for the colonial government. He learnt his engineering in India before heading for Egypt in 1883. There he rose to become director-general of reservoirs, and a legend on the banks of the Nile. He built the first Aswan dam, then the largest in the world, went on to revive the ancient irrigation systems of Mesopotamia, and watered deserts from South Africa to India. But he was deeply troubled by the discovery that much of what his fellow water engineers did in their colonial playgrounds was worse than useless.
71) As it is stated in the passage, Willcocks’s work in Egypt ___________.
brought about a rapid change in the economic life of the country
earned him fame, power and prestige
was of secondary importance compared with what he was to do in India
was confined to the construction of the Aswan dam
has always been underestimated
Clear selection
72) The Rhine-Ruhr area became the greatest industrial region of Germany, because it had at its heart the great coalfield of the Ruhr. Mining is now almost entirely northeast and westwards across the Rhine. The region contains the greater part of the German iron, steel and heavy engineering industries. The great integrated iron and steel plants mostly cluster on the Rhine waterway. Specialized steel plants and engineering works are more widespread. With a decline in coalmining and the dismantling after World War II of certain steel plants, some of the older Ruhr towns have diversified their industries considerably: vehicles, electrical goods and clothing are now being produced.
72) It is pointed out in the passage that, following World War II, ___________.
the increase in coal production gave a new impetus to the steel industry in the towns of the Ruhr area
new types of industry, such as textiles and car manufacturing, replaced the former steel industry in certain parts of the Ruhr area
the electrical industry throughout the Ruhr area of Germany became economically as important as the steel industry itself
the towns in the Ruhr area rapidly achieved a high level of prosperity through improvements in the steel industry
all the steel plants in the Ruhr area had to be closed down to avoid the pollution of the towns
Clear selection
73) The Rhine-Ruhr area became the greatest industrial region of Germany, because it had at its heart the great coalfield of the Ruhr. Mining is now almost entirely northeast and westwards across the Rhine. The region contains the greater part of the German iron, steel and heavy engineering industries. The great integrated iron and steel plants mostly cluster on the Rhine waterway. Specialized steel plants and engineering works are more widespread. With a decline in coalmining and the dismantling after World War II of certain steel plants, some of the older Ruhr towns have diversified their industries considerably: vehicles, electrical goods and clothing are now being produced.
73) It is clear from the passage that the immense coal deposits of the Ruhr ___________.
have had adverse effects upon the older towns of the area
have been almost completely used up by the iron and steel industry
turned the Rhine-Ruhr into Germany’s major industrial area
were once regarded as inexhaustible even in the face of such intense mining
have no equal anywhere else in Europe
Clear selection
74) The Rhine-Ruhr area became the greatest industrial region of Germany, because it had at its heart the great coalfield of the Ruhr. Mining is now almost entirely northeast and westwards across the Rhine. The region contains the greater part of the German iron, steel and heavy engineering industries. The great integrated iron and steel plants mostly cluster on the Rhine waterway. Specialized steel plants and engineering works are more widespread. With a decline in coalmining and the dismantling after World War II of certain steel plants, some of the older Ruhr towns have diversified their industries considerably: vehicles, electrical goods and clothing are now being produced.
74) The writer of the passage makes the point that the major part of the iron and steel industry of Germany ___________.
has basically remained unchanged during the last hundred years
has come into being since World War II
is the major source of the country’s prosperity
no longer depends on coal as its main source of power
is located on either side of the Rhine
Clear selection
75) The US company, “Scientific Applications and Research Associates” (SARA) Inc. has developed crowd-dispersal weapons for the US military that generate high-intensity sound waves. Sound levels of 120 to 130 decibels cause pain and blurred vision; above 140 decibels, sound produces profound discomfort throughout the body. Earplugs are no protection. These acoustic systems have a directed beam, projecting the sound in a narrow fan. They include high-intensity sound generators with power levels of up to 60 kilowatts and are combustion driven, using a series of small explosions to create a noise or drive a siren or whistle.
75) One important point made in the passage is that high decibel levels of sound ___________.
are only harmful when they are continuous
can only be resisted by means of earplugs