问答题Practice 1　　The greenhouse effect causes trouble by raising the temperature of the planet. The 1 rise is not very much，but the Earth’s ecosystem is very weak，and small changes can have large effects.　　It has been believed that this 2 of one degree

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问答题

Practice 1　　The greenhouse effect causes trouble by raising the temperature of the planet. The 1 rise is not very much，but the Earth’s ecosystem is very weak，and small changes can have large effects.　　It has been believed that this 2 of one degree will happen by the year 2025. This could probably 3 the North American corn belt, which produces much of the world’s grain， 4 to much higher food prices，and even less food for the Third World than they already have. However，it would also mean that some countries which are further north would be able to 5 crops they had never been able to before，although there is less land as you move north from the corn belt.　　The other serious worry is that rising sea levels from the melting of the polar ice could 6 flood many countries. A rise in sea levels of one meter，which many expels are 7 by the year 2100 (and some as soon as 2030)，would flood 15 percent of Egypt，and 12 percent of Bangladesh. The Maldives in the Indian Ocean would almost 8 disappear. Most of the countries which would suffer most from a rise in sea levels are the poor 9 states，so the islands in the Caribbean，South Pacific，Meditertgiiean and Indian Ocean have formed the Alliance of Small Island States，AOSIS，so they have a 10 voice in international politics and can make the richer developed world listen to their problems.[A] severely 　　　　 [B] damage　　　　　[C] island[D] critical　　　　　[E] grow 　　　　　 [F] mainland[G] louder 　　　　　 [H] predicting 　　 [I] rise[J] completely 　　　 [K] geometry 　　　 [L] actual[M] extending 　　　　[N] 1eading 　　　　[O] develop

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相似问题和答案

第1题：

Dolphins are very smart creatures. They learn very quickly, _______ 1) is why they, out of all sea animals, are used most often in movies and television. They can be very helpful and have helped humans in trouble without _________ 2). A dolphin can sense danger and will know _______ 3) something is not right. Often times dolphins have helped to save people in swimming accidents and such. They are very curious animals. Their _________ 4) can sometimes get them in trouble. Such cases would be getting too close to a fisherman’s net and _________ 5) tangled up within it. Along with being curious, dolphins love to play. They love humans in the respect that they love to play with the balls they might have or simply swim around with humans.

A、that

B、which

C、who

D、it

A、thoughts

B、reasons

C、hesitation

D、difficulty

A、while

B、as

C、that

D、when

A、curiosity

B、smartness

C、intelligence

D、actions

A、get

B、getting

C、to get

D、got

参考答案：BCDAB

第2题：

Only a very delicate thermometer can ________ such tiny changes in temperature in a precise way.

A、count

B、relate

C、measure

D、number

正确答案:C

第3题：

– Do you like this one? It’s on sale. – ()

(A) It is expensive.

(B) No, not very much

(D) Not really.

正确答案：B
解答参考：营业员问：您喜欢这个吗?它正在打折。B选项意思是不是很喜欢。

第4题：

共用题干
Lakes,Too,Feel Global Warming

There's no doubt:In the last few decades,the average temperature on Earth has been higher than it has
been in hundreds of years.Around the world,people are starting to measure the effects of global warming一
and trying to figure out what to do about it.
Scientists recently used satellites to study the temperatures of lakes around the world,and they found
that lakes are heating up.Between 1985 and 2009,satellites recorded the nighttime temperatures of the sur-
faces of 167 lakes.During those 24 years,the lakes got warmer by an average of about 0.045 degree
Celsius per year.
In some places,lakes have been warming by as much as 0.10 degree Celsius per year. At that rate,a
lake may warm by a full degree Celsius in just 10 years.That difference may seem small一you might not
even notice it in your bath.But in a lake,slightly warmer temperatures could mean more algae（水藻）,and
algae can make the lake poisonous to fish.
The study shows that in some regions,lakes are warming faster than the air around them.This is impor-
tant because scientists often use measurements of air temperature to study how Earth is warming. By using
lake temperatures as well,scientists can get a better picture of global warming. The scientists say data on
lakes give scientists a new way to measure the impact of climate change around the world.
That's going to be useful,since no country is too big or too small to ignore climate change.Scientists
aren't the only ones concerned.Everyone who lives on Earth is going to be affected by the rapid warming of
the planet. Many world leaders believe we might be able to do something about it,especially by reducing the
amount of greenhouse（温室）gases we put into the air.
That's why the United Nations started the Framework Convention on Climate Change,or UNFCCC.
Every year the convention meets,and representatives from countries around the world gather to talk about
climate change and discuss global solutions to the challenges of a warming world.

Lakes seem to be warming faster in Asia.
A:Right
B:Wrong
C:Not mentioned

答案：C

解析：

由第二段可知，科学家从1985年开始记录湖水温度的，到现在还不到30年。
由第二段最后一句话可知，此判断正确。
湖水在亚洲温暖的快在文中没有信息依据。
由第三段最后一句话可知，此判断正确。
由第四段第二句话可知，科学家经常用空气温度来研究地球变暖的问题，说明他们关注的主要焦点在于空气温度。
由第五段的内容可知，地球上的任何人都应关心全球变暖的问题。
在文中没有提及今年的UNFCCC在哪举行。第3部分：概括大意与完成句子

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.

Algae are plants that can__________.
查看材料

A．live in very hot temperatures
B．live in very cold temperatures
C．manufacture oxygen
D．all of the above

答案：D

解析：

由第三段的第一句“Sagan proposes that algae organisms，which can live in extremely hot or cold atmospheres and at the same time produce oxygen”可知，A、B、C均正确，所以选D。

第6题：

The small man wore a suit ( ) large for him and therefore looked ridiculous.

A. very much

B. too much

C. much too

D. very many

正确答案：C

第7题：

III阅读理解（20分）

There are many different kinds of cars in the world． My uncle thinks this is because cars are like their drivers． He says: "Rich people have expensive cars，big people have large cars，and old people drive old cars． "But I don-t agree with him．

My neighbor，Mrs Hill，is 82 years old． She drives only to the bank on Tuesdays． She never drives more than 30 kilometers an hour． Do you think Mrs Hill has a very old and small car? No! Her car is new．lt-s very large，and it can g0 200 kilometers an hour!

My friend Mike is an artist． He draws beautiful pictures with lots of colors． But his car is black! Mrs Bates has a very，very old car．lt often has engine trouble． Does she drive that kind of car because she is poor? No，she has four factories and two million dollars in the bank． My aunt Mary has a very small car． Every Sunday，she．drives to the country with her husband，her three children，her mother and their dog．

Now，you have read about some people and their cars． Do you agree with my uncle? Maybe your family have cars． Do you want to say something about them?'

( )21． What does the writer-s uncle think of cars and their drivers?

A． Big people drive small cars．

B． Old people drive new cars．

C． Poor people have expensive cars．

D． Rich people have dear cars．

正确答案：D
Ⅲ．21.D【解析】从文中第一段第三句作者叔叔说的话中“...Rich people have expensive cars”可知答案．

第8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9题：

Scientists have been keeping records of lake temperatures for over 30 years.
A:Right
B:Wrong
C:Not mentioned

答案：B

解析：

第10题：

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 lus 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 American scientist, Professor Carl Sagan.
Sagan believes that before the earth's resources are compleetely exhausted it will be possible to change the atmophere of Venus and so create a new world almost as large as earth itself. The difficult is that Venus is much hotter than the earth and there is only a tiny amount of water there.
Sagan proposes that algae organisms that can live in extremely hot or cold atmospheres and at the same time produce oxygen,should be bred in condition similar to those on Venus.As soon as this has been done, the algae will be placed in small rockets. Spaceship will then fly to Venus and fire the rockets into the atmosphere .In a fairly short time, the alge will break down the carbon dioxide into oxygen and carbon.
When the algae have done theri work, the atmosphere will become cooler,but befor man can set foot on Venus it will be neccessary for the oxygen to produce rain. The surface of the planet will still be too hot for man to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.
Algae are plants that can____.

a.live in very hot temperatures
b.live in very cold temperatures
c.manufacture oxygen
d.all of the above

答案：D

解析：

问答题Practice 1　　The greenhouse effect causes trouble by raising the temperature of the planet. The 1 rise is not very much，but the Earth’s ecosystem is very weak，and small changes can have large effects.　　It has been believed that this 2 of one degree w

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问答题Practice 1 The greenhouse effect causes trouble by raising the temperature of the planet. The 1 rise is not very much，but the Earth’s ecosystem is very weak，and small changes can have large effects. It has been believed that this 2 of one degree w

题目

相似问题和答案

更多相关问题

相关内容

问答题Practice 1　　The greenhouse effect causes trouble by raising the temperature of the planet. The 1 rise is not very much，but the Earth’s ecosystem is very weak，and small changes can have large effects.　　It has been believed that this 2 of one degree w