The sea has always interested man. From it he can get food, minerals, and treasure. For thousands of years, he could sail on it. But he could not go far beneath its surface.

   Man wants to explore deep into the sea. However, he is not a fish. He must breathe air, so he can’t stay under the water’s surface for any length of time. To explore deep water, man faces even more dangers and problems.

   A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a hose(軟管) and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. His body is under great pressure.

   When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles(氣泡). The diver is then suffering from the bends(潛函病). The bends can cause a diver to double up in pain. They can even kill him.

On the whole, this text is about _________.

  A. special mixtures of gases in deep sea.

  B. the problems a diver faces in deep sea.

  C. air pressure under the surface of sea water.

  D. a kind of illness that man suffers in the sea.

The text does not say so, but it makes you think that ____________.

   A. deep-sea divers should be in good health.

   B. divers explore the deep sea only for treasure.

   C. there is a special mixture of gases under the sea.

   D. diving under the water too quickly causes a kind of illness.

Why does a diver get the bends?

    A. The air in his blood is used up.      B. His diving suit weighs too much.

    C. He comes to the surface too quickly.  D. He tries to do exercise under the sea.

【小題1】B【小題1】A【小題1】C


解析:

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A.The writer often spends his holidays at the beach.
B.A huge squid ate two children while their mother was not watching.
C.Some people used to play boom box while spending their holidays at the beach.
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“IT’S A BEAUTIFUL DAY,” he shouted.“THE SKY IS BLUE, AND THERE’S A GENTLE WIND, AND THE WATER IS CALM, AND…”

Behind me, a woman, her mobile phone pressed to her ear was walking back and forth.

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       A.had a wonderful holiday at the beach

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       D.experienced an unhappy holiday at the beach

2.According to the passage, which of the following is NOT true?

       A.The writer often spends his holidays at the beach.

       B.A huge squid ate two children while their mother was not watching.

       C.Some people used to play boom box while spending their holidays at the beach.

       D.Some people often make loud mobile phone calls without caring for others.

3.The underlined word “corpse” in this passage has the closest meaning to________.

       A.a(chǎn) dead body                                       B.a(chǎn) loud mobile phone  

       C.a(chǎn) sound sleeper                                    D.a(chǎn) sleep lover

4.In the past the fellow who brought a boom box_________.

       A.turned it up to make the seagulls happy

       B.turned it up to cause the seagulls to explode

       C.might cause less trouble than the beachgoers with mobile phones

       D.might cause more trouble than the beachgoers with mobile phones

5.We can infer from the passage that _______.

     A.the writer is interested in mobile phone.

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     C.the writer hates to be disturbed while enjoying holidays on the beach.

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