For many years scientists have said that the earth is getting warmer. Now they have found something new-hot cities! In the southern US, they have found that cities become very hot in summer. For example, the city of Atlanta in Georgia has roof(屋顶) temperature of up to 50^oC while it is 27℃ in the streets! At night, the outside of buildings stays so hot that the heat of the city causes storms over the city!

China also has the same kind of problems. Every year more farmland is used for factories or offices. More housing is needed, too. As people become richer, they buy more cars. New roads are needed and new car parks are built in the city centers. This all makes cities hotter.

It isn’t easy to change the situation. City planners say that we should plant more trees in the middle of cities. Every new street should have trees on both sides, they say. Trees make the temperature lower, so we should have more trees in our parks and squares. We should also paint our roofs white. If we do this, they do not become so hot. Every roof in a hot and sunny country should have solar(太阳的) roof panels. The electricity from these can be used to run the air conditioners (空调)in the buildings.

People continue to cut down forests around the cities. This makes the problem worse. Cities are growing faster and faster. By the year 2025, four fifths(五分之四) of the population will be living in cities. If we go on like this, there will not be enough farmland to feed everyone in the world

1.The scientists have found       .

2.The way to make the city cooler is to       .

3.What will probably happen in the future according to the fourth paragraph(段落)?

4.What is the best title(题目)for the passage?

完形填空(每空1词，共10分)

    Of all the things we eat and drink，water is the  1  important. The human body can go  2   food for a long time，but two  3  three days without water could make people  4  .

A lot of people don’t understand how  5  water the human body needs  6  well and many people don’t drink enough，especially in  7  weather. Most people drink  8  they are thirsty but in fact they need more water，especially when they take  9  .

A man’s body is 65 to 75 percent of  10  . If we don’t have enough water. We fell tired and may become ill.

(   )1.A.more           B. most             C. less                 D. least

(   )2.A.with           B. on               C. without              D. by

(   )3.A.or                 B. and                  C. of               D. but

(   )4.A.died           B. to die           C. dies                 D. die

(   )5.A.many           B. little           C. few                  D. much

(   )6.A.work           B. working              C. to work              D. works

(   )7.A.hot            B. cold                 C. cool                 D. warm

(   )8.A.so                 B. that                 C. when             D. since

(   )9.A.fun            B. exercise             C. exercises            D. work

(   )10.A.blood             B. water            C. air                  D. food

Long long ago, an old scientist made a few tests on different animals to find out which was the cleverest of all the animals.
In one test the old scientist put a monkey in a room. In the room there were many boxes. Some boxes were inside other boxes. The smallest box had some food in it. The scientist wanted to watch the monkey and to find out how long it would take the monkey to find the food. The scientist left the room. He waited for a few minutes outside the door. Then he put his eye to the keyhole(钥匙孔). What did he see? To his surprise, he found himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the scientist through the keyhole.  
【小题1】The scientist wanted to know ____.