The water was so（）that we could see the fish inside clearly.

B

Jack is a famous writer now．But he said he was not a good student when he was young．He was often late for class and didn’t like doing his homework． Sometimes he slept in class while the teacher was teaching．He didn't understand much, but he always thought he under-stood everything．．

One day the teacher asked the students a question, "When John was ten years old, his brother was twenty． John is fifteen now and how old is his brother?" Jack answered, "That's easy． His brother is twice as old as John, so he is now thirty． "

Another time, the teacher in a science class asked, "When it thunders(打雷) , why do we always see the light before we hear the sound? "But, Miss White," said Jack quickly, "can't you ．see our eyes are in front of our ears?"

The third time, the teacher in a biology class asked, "Why can fish swim in the water?" "But, Miss White," said Jack quickly, "don't you know fish can-t walk on land?"

( )26．Jack was not ________． when he was young．

A．strong

B．lazy

C．clever

D．well

B

The world is not only hungry，it is also thirsty for water． this may seem strange to you，since nearly 75% of the earth is covered with water． But about 97% of this water is sea water．Man can only drink and use the other 3% fresh water that comes from rivers，lakes，under-ground and other places． And we cannot even use all of that，because some of this fresh water has been made dirty．

At the moment，this small amount(数量) of fresh water is still enough for us． However，our need for water is getting greater and greater． Only if we take steps to solve this problem now，we can get away from a serious world water shortage later on． The people of the world cannot have an enjoyable life without enough clean water．

On one hand we should stop wasting this little water of ours，on the other hand we should find ways to reuse it，but this has not been done widely．

Today，in most large cities，water is used only once and it then returns to the sea or runs into underground places．lf we can make it clean again，it can be used once more just as if it were fresh from a spring．

But even if large cities reuse its water，we still would not have enough in the future． Where．could we turn to next for water? To the ocean! How can we do to make use of this great a-mount of sea water? We can take the salt from the water to make it fresh．

So if we take all these steps，we'll be in no danger of drying up!

( )26． Why does the writer say that the world is thirsty for water?

A． The amount of fresh water is really very small．

B． The people of the world waste too much water．

C． The people of the world have to drink a lot of water every day．

D． There are too many people in the world needing water．

A、Looking back

B、Having looked back

C、To look back

D、Being looked back

A、to

B、of

C、for

D、about

The journey two divers(潜水员)made some time ago to the very deepest point on the earth make us realize how much of the world still remains to be studied. The two men went down seven miles to the bottom of the Pacific Ocean inside a small ball to find out if there are any ocean currents(水流)or signs of life.

It was necessary to set out early, so that the ball would come to the surface in daylight, and so be easily found by the mother ship which would be waiting for it. The divers began preparations(准备)early in the morning and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.

The divers felt as if they were going down steps as they passed through warm and cold layers(层)of water. In time, the temperature dropped to freezing point. They kept in touch with the mother ship by telephone telling how they felt. Then, at a depth(深度)of 3,000 feet, the telephone stopped working and they were quite cut off from the outside world. All went well until some four hours later at 30,000 feet, the men were frightened by a loud, cracking(爆裂)noise: even the smallest hole in the ball would have meant instant death. Luckily, though, it was only one of the outer(外部的)windows that had broken. Soon afterwards, the ball touched the soft ocean floor raising a big cloud of "dust" made up of small dead sea-creatures. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just above them quite untroubled by the great water pressure(压力). But they did not dare to leave the lights on for long , as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the faint(微弱的)but clear voices of the divers were heard on the mother ship seven miles away. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.

1. The purpose of the diver's journey to the deepest point on the earth was to find _____.

A. if there are water currents and life in the great depths

B. if people can stand the severe cold in the great depths

C. if there are steps in the great depths

D. if the telephone works well in the great depths

2. The divers set out early in the morning so that _____.

A. they could return to the surface during the day

B. they could see at the bottom of the ocean

C. they could avoid the cold at night

D. they could stay long at the bottom

3. Which of the following statements is true?

A. The ocean water temperature decreases steadily with the depth

B. There are steps on the way to the bottom of the Pacific Ocean

C. There are steps between the water layers of different temperature

D. The water layers of different temperatures made the divers feel as if they were going down steps

4. As the divers went down to the ocean floor, the telephone _____.

A. kept working all the time

B. stopped working at a depth of 3,000 feet and began working again after they reached the bottom

C. stopped working at a depth of 3,000 feet and began working at 30,000 feet

D. stopped working at a depth of 3,000 feet and began working again when they returned to the same depth

5. On the ocean floor, the divers found that _____.

A. there was no life but some small dead sea-creatures

B. fish were swimming as freely as they do near the surface

C. fish were not swimming freely in the dark water

D. fish were not swimming freely under the high water pressure

but he could see everything clearly. 72.

--- Could I have a bottle of water, please?

--- ____________.

A. Thank you very much

B. Certainly, madam

C. See you later

Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .

Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water． And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .

46.___________

( )46. A. important

B. most important

C. more important

D. different

A、turn off

B、turn on

C、turn up

D、turn down

we could only see a _____ outline of a ship in the distance.

A、dark

B、dim

C、faint

D、black