Millions of years ago dinosaurs (恐龙)lived on the earth. In the days of dinosaurs the whole earth was warm and wet. There were green forests and they could find enough to eat. Later, parts of the earth became cold and dry, and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.

  We can guess another reason. New kinds of animals came on the earth. Some had big brains and were fast and strong. They could kill dinosaurs.

  There may be other reasons that we don’t know about yet. Scientists are trying to make more discoveries about dinosaurs.

  Dinosaurs were of many sizes and shapes(形状)。Some were as small as chickens, while some were about 90 feet long.

  There were also terrible fights between dinosaurs. They might have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints(足迹)that fight did take place.

1．According to the passage, dinosaurs did exist (存在) only　　   on the earth.

A. for millions of years

B. millions of years ago

C. more than 100 million years ago

D. when it was warm and wet somewhere

2．One reason why dinosaurs died out is that　　   .

A. there were too many dinosaurs

B. parts of the earth became cold and dry

C. the dead forests there could not supply them with enough food

D. they couldn’t find enough to eat

3．One more reason may be that　　   .

A. new kinds of animals came on the earth

B. some fast and strong animals with big brains could kill them

C. some dinosaurs were as small as chickens

D. some big dinosaurs died in the fights

4．We can see from this passage　　   .

A. scientists are trying to make some dinosaurs

B. dinosaurs are dangerous enough

C. dinosaurs are worth studying

D. scientists know nothing about dinosaurs

5．That terrible fights can be explained by　　   .

A. footprints of the animals

B. imagination (想象)

C. rocks and forests

D. dinosaur’s eggs

If you have ever gone through a toll booth(收费所), you know that your relationship to the person in the booth is not the most intimate you'll ever have. It is one of life's frequent affairs: You hand over some money; you might get change; you drive off.

　　Late one morning in 1984, headed for lunch in San Francisco, I drove toward a booth. I heard loud music. It sounded like a party. I looked around. No other cars with their windows open. No sound trucks. I looked at the toll booth. Inside it, the man was dancing.

　　"What are you doing?" I asked.

　　"I'm having a party," he said.

　　"What about the rest of the people?" I looked at the other toll booths.

　　He said, "What do those look like to you?" He pointed down the row of toll booths.

　　"They look like……toll booths. What do they look like to you?"

　　He said, "Vertical coffins. At 8:30 every morning, live people get in. Then they die for eight hours. At 4:30, like Lazarus from the dead, they reemerge and go home. For eight hours, brain is on hold, dead on the job. Going through the motions."

　　I was amazed. This guy had developed a philosophy, a mythology about his job. Sixteen people dead on the job, and the seventeenth, in precisely the same situation, figures out a way to live. I could not help asking the next question: "Why is it different for you? You're having a good time."

He looked at me. "I knew you were going to ask that. I don't understand why anybody would think my job is boring. I have a corner office, glass on all sides. I can see the Golden Gate, San Francisco, and the Berkeley hills. Half the Western world vacations here……and I just stroll in every day and practice dancing."

1.According to the first paragraph, in most cases, how do you describe the relationship between drivers and toll booth?

A．most intimate      B．very tense         C．pretty ordinary     D．extremely hostile

2.Why did the author go to San Francisco?

A. To attend a party

B. B. To have a meal

C. To dance with the worker in the toll booth

D. To hand in the repair fee of his car

3.The underlined name “Lazarus” mentioned in the eighth paragraph probably refers to a person___________.

A. who was very active in his life

B. B. who was dead and revived from death

C. who was going to San Francisco

D. who liked dancing at work

4.According to the passage, which of the following statements is true?

A．The author passed by the toll booth every day.

B．The worker enjoyed his work very much.

C．Only western people like to spend their holidays in the Berkeley hills.

D．The dancing worker was getting badly along with his colleagues.

5.After hearing what the worker said, the author would probably_________.

A．go to the worker’s senior to complain about his bad attitude towards job.

B．go climbing the Golden Gate and the Berkeley hills to have a vacation.

C．learn to take a positive attitude to job and appreciate valuable things in life.

D．go back home instead of wasting time traveling to San Francisco.

A visit to a doctor’s office costs from fifteen to fifty dollars. It is almost impossible for people to pay for medical care they need. Many people in the United States think that doctors are overpaid. Most doctors, however, disagree. They say that they were required to study medicine for a long time. Tuition(学费)for many years of medical education costs lots of money. Doctors say that it is necessary for most medical students to borrow money from a bank to pay their tuition. Because this money must be repaid to the bank, young doctors need to receive a lot of money for their work. So they charge(收费)people high prices for medical care.

Therefore, it’s possible that the high cost of medical care in America is unnecessary. Because high tuition is one cause of high costs, one way to lower costs would be to have medical schools that are free or have lower tuition.

1．Some people don’t have their medical care they need because　　   .

A. they are not willing to pay the doctors high tuition

B. they don’t think it necessary to have medical care

C. they don’t want to spend much money on it

D. they haven’t got enough money to pay for it

2．The reason for the high medical cost mentioned(提到)in the article is　　   .

A. tuition in medical schools is high

B. the price of medicine is high

C. doctors are overpaid

D. doctors must pay money to banks

3．One way to lower the cost of medical care would be　　   .

A. not to see a doctor

B. to pay doctors less money

C. to let medical students have free or partly free medical education

D: To forbid(禁止)doctors to ask their patients for too much money

4．The main idea of the article is that __________.

A. a visit to a doctor’s office may cost as much as $15 to $50 in US

B. the cost of medical care is the main reason for the high costs in US

C. medical care in the United States costs a lot of money because doctors want to be rich

D. the high cost of tuition in medical schools is one reason for the high cost of medical care in America

5． The cost of medical care in the United States is very high. What does the writer think about it?

A. He agrees that doctors are overpaid.

B. He thinks it a big problem and suggests a way to settle it.

C. He doesn’t think medical students should borrow money from banks.

D. He doesn’t think it necessary for medical students to study for a long time.