B

   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 got far beneath (在……下方) 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 (打气) to him from above. He can carry a tank of air on his back and breathe through a hose (软管) and a mouthpiece (接口管). 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 (压力).

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 (气泡). The diver is then suffering from the bends (潜水员病). The bends can cause a diver to double up in pain. They can even kill him.

76. On the whole, this passage is about ________.

A. special mixtures of gases in deep sea 

B. the problems man faces in deep-sea diving

C. air pressure under the surface of sea water 

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

77. A diver’s body in deep water ______ .

A. is under great pressure    B. is just like that of a fish

C. suffers from the bends    D. weighs very little

78. The passage 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. diving under the water too quickly causes a kind of illness

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

79. Why does a diver get the bends?

A. He tries to do exercises under the water.   B. His diving suit weighs too much.

C. He comes to the surface too quickly.      D. The air in his blood is used up.

80. From the passage we can see that _________.

A. the sea began to interest man in the last few years

B. man is not at home deep in the sea

C. all divers will get the bends sooner or later

D. the air in the seawater will kill a diver if he is not careful

A

When Jim and Cathy Malupa came to the United States from the Philippines, they lived in an apartment in the center of Chicago. Cathy worked as an accountant in a downtown bank.

After looking for a long time, Jim and Cathy bought a house in the suburbs.

One morning, Mrs. Gray, the Malupas next door neighbour, stopped by to meet Cathy. “Welcome to the neighborhood. We’d like to invite you and your husband to our home this Friday evening. We want you to meet all the other neighbours.”

On Friday evening, at 7 oclock Jim and Cathy walked to the Grays home. A lot of people were at the party. Several people congratulated Cathy and Jim on their new home.

At about 8:30, Jim walked over to Cathy and asked, “When will the dinner be served? Im really hungry.”

“I dont know,” Cathy answered. “Im hungry, as well. Maybe they like to eat late.”

At 9:15, everyone was still standing, talking and enjoying the refreshments (点心). Jim was so hungry that he was feeling weak. Cathy brought Jim a bowl of crackers and some cheese. By 10 oclock, Peter was sick of crackers. And he was still very hungry.

Some guests started to leave. Jim and Cathy were very surprised. One guest said to Mr. Gray, “Thanks for inviting us to the party. We had a good time.”

Then Cathy realized her mistake. She whispered to Jim, “This is a neighborhood party, not a dinner party. I made a mistake. All the other guests had dinner before they came here.”

Jim and Cathy quickly thanked the Grays for the party. They fetched their coats and left. They walked back home, got into their car and drove to a nearby shopping center. The Italian restaurant was closed and the Chinese restaurant was also closed. “What are we going to do?” Peter asked.

71. “Looking” in “After looking for a long time,” means “    ”.

A. looking for a good job     B. looking for a proper house

C. looking for a good neighbor             D. looking for something lost

72. Why did Mrs. Gray invite the Malupas to her home?

A. To have dinner.                      B. To meet all the other neighbors.

C. To attend a ball.                      D. To congratulate them on their new work.

73. What did the Malupas think they would have at the party?

A. A good dinner.           B. Crackers.   C. Tea.  D. Cheese.

74. Cathy realized her mistake    .

A. at the beginning of the party            B. in the middle of the party

C. at the end of the party     D. after they returned home

75. After they left the neighborhood party, they went to a shopping center    .

A. to have dinner                        B. to buy goods

C. to enjoy the night sense    D. to buy refreshments

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