单选题The sentence “Our planet has shrunk” underlined in Paragraph 1 means that __________.A the earth has become physically smallerB the more advanced ways of traveling has made the distance between countries shorterC the traditional concept of our planet h

题目

单选题

The sentence “Our planet has shrunk” underlined in Paragraph 1 means that __________.

the earth has become physically smaller

the more advanced ways of traveling has made the distance between countries shorter

the traditional concept of our planet has become out-of-date

modern means of communication has made it much easier for people to communicate with each other from different parts of the world

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相似问题和答案

第1题：

Most of us，when we reached our teens，started looking forward to the day when we would occupy places of our own，far from the confines of our families. We saw this moving away as a chance to strike out on our own，to grow，to spread out wings and experience freedom. At the same time，we regarded this independence as temporary-the thing to do until we found the perfect mate and married. Over the years，many millions of people have made this passage from one family to another，with just a brief，often nervous interval of independence in between. But recently，more and more people have begun to challenge the concept that living together is better than living alone. Being single is now accepted as an alternative lifestyle-one that is natural，rewarding，and complete. In fact，being single has become almost fashionable.

正确答案：
我们大多数人到了十几岁的时候，就开始向往有一天能有自己的独立空间，从而远离家庭的束缚。我们把离开家看做是独立生活、长大成人、展翅飞翔和体验自由的机会。但与此同时，我们认为这种独立只不过是在我们找到满意的伴侣并结婚之前的暂时的事情。这些年中，几百万人们都是这样从一个家庭到另一个家庭过来的，中间经历了一个短暂、并且常常是不知所措的独立阶段。但是最近，这种与人住在一起比独居更好的观念正开始受到越来越多的人们的挑战。独身现在被人们看做是生活方式的另一种选择-这种生活方式是合乎自然的，有意义的，而且是没有什么缺陷的。实际上，独身已经变得近乎流行起来了。

第2题：

There is only one kind of family on planet Earth today: it is the traditional extended family.()

参考答案：错误

第3题：

I think a new era in the relationships between our two countries has _______.

A. set about

B. set out

C. set up

D. set in

正确答案：D

第4题：

共用题干
Earth's Inner Core

Scientists have long struggled to understand what lies at the planet's center.Direct
observation of its center is impossible,so researchers must_________(1)to other evidence.
In 1889,a German scientist detected a severe earthquake in Japan.Geophysicists
concluded that shock waves_________(2) jolts（晃动）from one side of Earth through
the center to the other side.Then in 1936,Danish geophysicist lnge Lehmann studied the
waves' __________ (3) to determine that within Earth's core of molten（熔化了的）iron
lies a solid inner core一but_________(4) that core was made of eluded（难倒）her.
Other geophysicists quickly determined that Lehmann's inner core was composed mostly
_________(5) iron.Since then,Lehmann's discovery has _________(6)
conventional Earth science.
But now scientists are challenging traditional theory with new and radical_________
(7).For example,Earth's center could actually contain an"inner core within the inner
core."claim lshii and colleague Adam Dziewonski.
Analyzing hundreds of thousands of earthquake wave _________(8),they
maintain that the inner core has at its heart a tiny, even more solid sphere（球体）.This
sphere"may be the oldest fossil_________(9)from the formation of Earth,"says Dziewonski.
Dziewonski and Ishii speculate that shortly _________(10)Earth formed around
4.8 billion years ago,a giant asteroid（小行星）smashed into the young planet and nearly
melted it.But Earth's center didn't quite melt;it_________(11)mass as the planet
cooled. The core within a core may be the kernel（核心）that endured. " Its presence
could change our basic ideas about the_________(12)of the planet,"Dziewonski
says.
Dziewonski's idea is tame（温和的）compared to the_________( 13 ) theories of
independent geophysicist J. Marvin Herndon.Earth's inner core is made not of iron,he
claims,but a_________(14)of nickel and silicon.Herndon has a truly revolutionary
notion : Within the nickel silicide（硅化物）inner core is also an "inner" inner core一an
8km-wide ball of the element uranium.Uranium is radioactive.Herndon thinks the uranium
releases heat energy as its atoms_________(15)fission-split and crash into one
another in a chain reaction.In other words,we may live on top of a gigantic, "natural"
nuclear power plant.

_________(12)
A:size
B:origin
C:structure
D:shape

答案：B

解析：

第5题：

Passage 2
If the population of the earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan.
Sagan believes that before the earth's resources are completely exhausted it will be possible to change the atmosphere of Venus and so create a new world almost as large as earth itself. The difficulty is that Venus is much hotter than the earth and there is only a tiny amount of water there.
Sagan proposes that algae organisms, which can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be bred in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will then fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the algae will break down the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler, but before man can set foot on Venus it will be necessary for the oxygen to produce rain. The surface of the planet will still be too hot for men to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.
On Venus there is a lot of__________.

A. water
B. carbon dioxide
C. carbon monoxide
D. oxygen

答案：B

解析：

由第--f&的最后一句话中的“there is only a tiny amount ofwater there(Venus)”得知，A选项错误。第三段结尾说明，藻类通过火箭运往金星，然后“In a fairly short time，the algae will break down the carbon dioxide into oxygen and carbon”.说明金星上有大量的二氧化碳。C和D选项错误。故选B。

第6题：

A greenhouse is a building made of glass which is used for keeping plants when the outside temperature is low. In a similar way there are several gases in the atmosphere which trap(捕捉)the heat produced by the sun and prevent it from escaping. These gases are known as"greenhouse gases"，and the way in which they trap heat in the atmosphere is called the "greenhouse effect". This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.

The problem is that in the last century and a half, we have been putting too many of these gases into the earth's atmosphere by burning large quantities of coal and oil and by cutting down forests. The rapid increase in greenhouse gases is making the world warmer. The world's temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide(二氧化碳)in the atmosphere doubles, there will probably be a rise in the earth's temperature of between 1 and 4 degrees. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased.

1. The"greenhouse effect"means _____.

A. the way in which gases are used for keeping plants warm

B. a natural course which is some degree helpful to us

C. the way"greenhouse gases"trap heat on the earth

D. the whole course in which greenhouse gases prevent heat

2. If there were no greenhouse effect, _____.

A. no plants would grow on our planet

B. earth would be thirty degrees colder

C. man could not live on the earth

D. All of the above answers are correct

3. Which of the following is NOT true? _____

A. Burning too much coal and oil produces lots of greenhouse gases.

B. It has become warmer on the earth now than in the past.

C. Gases put into the atmosphere now will affect the earth years later.

D. The temperature in a greenhouse is as high as that in the atmosphere.

4. Suppose the earth's temperature rose by 3 degrees, _____.

A. great harm would be done to mankind

B. the sea level would go by 10 centimetres

C. all the land in the world would be flooded

D. crops would be unable to grow on the earth

5. This passage mainly deals with _____.

A. the concept(概念)and harm of greenhouse effect

B. the relation between greenhouse gases and man

C. the concept and change of greenhouse effect

D. the effect of the rise of the earth's temperature

参考答案： BDDAC

第7题：

Our teacher told us that the earth _____ from west to east.

A、turn

B、turns

C、turned

D、has turned

正确答案:B

第8题：

Today in Hollywood ______.

A. more television films are produced

B. man-made fighting has completely taken the place of natural light

C. few films are taken for the cinema

D. oil production has become more important than the film industry

正确答案：A

55．答案为A 此考题为细节题。根据最后一段中的Hollywood remains a center of film production although now making more films for television than for the cinema，我们就可肯定A为正确答案。

第9题：

_________(1)
A:try
B:leave
C:turn
D:point

答案：C

解析：

第10题：

And that quest has brought______benefits that improve our lives in countless ways.

A.tangible
B.displayed
C.conditional
D.proved

答案：A

解析：

本题考查近义词辨析。题目意为“而这一追求带来了实实在在的好处，以无数方式改善了我们的生活”。A选项“有形的”，B选项“陈列，展示”，C选项“有条件的”，D选项“试验，检验”。根据题干，tangible benefits为固定搭配，意为“切实利益”，故A选项符合题意。
　　

单选题The sentence “Our planet has shrunk” underlined in Paragraph 1 means that __________.A the earth has become physically smallerB the more advanced ways of traveling has made the distance between countries shorterC the traditional concept of our planet h

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