1.I don't see any ........ in arriving early at the theater if the show doesn't start until 9 o'clock.

A.cause B.reason C.aim D.point

2.You thought i did wrong but the result ........ my action.

A.agreed B.approved C.proved D.justified

3.Thomas has garden which is ....... mine.

A.double as large B.semi-larger than C.twice as large as D.as two-time as large

4. ......................... is not clear to researchers.

A.Why dinosaurs having become extinct.

B.Why dinosaurs became extinct.

C.Did dinosaurs become extinct.

D.Dinosaurs became extinct.

5.The new manager is ............... easy-going. He is always very serious about the work.

A.by no means B.by means of C.by all means D.in the mean time

6. ........................ one after another, parallel computers perform groups of operations at the same time.

A.Conventional computers, by handling tasks.

B.Since tasks being handled by conventional computers.

C.Whereas conventional computers handle tasks

D.While tasks handled by conventional computers.

Read the sentences carefully and choose the best answers to make complete ones.

1. From 1949 onward, the artist Georgia O’keeffe made New Mexico _______.

A. her permanent residence was B. where her permanent residence

C. permanent residence for her D. her permanent residence

2. Just as remote-controlled satellites can be employed to explore outer space, _______ employed to investigate the deep sea.

A. can be robots B. robots can be C. can robots D. can robots that are

3. _______ is not clear to researchers.

A. Why dinosaurs having become extinct. B. Why dinosaurs became extinct

C. Did dinosaurs become extinct D. Dinosaurs became extinct

4. The first transatlantic telephone cable system was not established _______ 1956.

A. while B. until C. on D. when

5. Drinking water _______ excessive amounts of fluorides may leave a stained or mottled effect on the enamel of teeth.

A. containing B. in which containing C. contains D. that contain

6. In the 1820’s physical education became _______ of the curriculum of Harvard and Yale Universities.

A. to be part B. which was part C. was part D part

7. If you can win his attention ___________ for you.

A. the so much better B. the better so much C. so much the better D. so the much better

8. The President resigned; the whiff of scandal remained ____________.

A. otherwise B. therefore C. immediately D. nevertheless

9. Which __________ agency do you work for?

A. ads B. advertised C. advertising D. advertisement

10. Van Gogh suffered from depression ____________ by overwork and ill-health.

A. brought on B. coming about C. taken up D. put through

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 1 to 5.

A team of Russian scientists has challenged the theory that the woolly mammoths became extinct 10,000 years ago at the end of the Ice Age. The scientists have reported that the beasts may have survived until 2000 B.C. on an island off the coast of Siberia, where researchers uncovered 29 fossilized woolly mammoth teeth ranging in age from 4,000 to 7,000 years. The question to be asked now is, how did these prehistoric pachyderms survive in their island environment? One possibility is that they adapted to their confined surroundings by decreasing their bulk. This theory is based on their smaller tooth size, which has led scientists to believe that they were only 6 feet tall at the shoulder compared with 10 feet of their full-sized counterpart. But would this be enough to enable them to survive thousands of years beyond that of other mammoths? Researchers are still working to uncover the reasons for this isolated group's belated disappearance.

According to the passage, some researchers suggest that mammoths became extinct

A. about 2,000 years ago

B. about 4,000 years ago 

C. about 7,000 years ago

D. about 10,000 years ago

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 37 to 43.

A team of Russian scientists has challenged the theory that the woolly mammoths became extinct 10,000 years ago at the end of the Ice Age. The scientists have reported that the beasts may have survived until 2000 B.C. on an island off the coast of Siberia, where researchers uncovered 29 fossilized woolly mammoth teeth ranging in age from 4,000 to 7,000 years. The question to be asked now is, how did these prehistoric pachyderms survive in their island environment? One possibility is that they adapted to their confined surroundings by decreasing their bulk. This theory is based on their smaller tooth size, which has led scientists to believe that they were only 6 feet tall at the shoulder compared with 10 feet of their full-sized counterpart. But would this be enough to enable them to survive thousands of years beyond that of other mammoths? Researchers are still working to uncover the reasons for this isolated group's belated disappearance.

According to the passage, some researchers suggest that mammoths became extinct

All possible means have been used to prevent air pollution. The sky is still not clear

A. Every possible means has been used to prevent air pollution so that the sky can be clearer

B. The sky is still not clear due to the fact that all possible means have been used to prevent air pollution

C. To prevent air pollution, every possible means has been used, and so the sky is still not clear

D. Every possible means has been used to prevent air pollution, yet the sky is still not clear

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 37 to 43.

A team of Russian scientists has challenged the theory that the woolly mammoths became extinct 10,000 years ago at the end of the Ice Age. The scientists have reported that the beasts may have survived until 2000 B.C. on an island off the coast of Siberia, where researchers uncovered 29 fossilized woolly mammoth teeth ranging in age from 4,000 to 7,000 years. The question to be asked now is, how did these prehistoric pachyderms survive in their island environment? One possibility is that they adapted to their confined surroundings by decreasing their bulk. This theory is based on their smaller tooth size, which has led scientists to believe that they were only 6 feet tall at the shoulder compared with 10 feet of their full-sized counterpart. But would this be enough to enable them to survive thousands of years beyond that of other mammoths? Researchers are still working to uncover the reasons for this isolated group's belated disappearance.

Which of the following terms from the passage is NOT used to refer to the mammoths?

A. beasts

B. pachyderms

C. bulk

D. group

Dinosaurs died out long before people appeared. Dinosaurs lived from about 230 million years ago to about 65 million years ago. There are several theories about why dinosaurs became extinct. Many scientists believe that there was a sudden, (22) _____ event. They think that an asteroid or comet (23) _____ with the earth. Fire from the impact burned large areas. Dust blocked sunlight from (24) _____ the surface of the earth. Acid rain fell everywhere. Plants could not grow. There was no food for the plant-eating dinosaurs, so they died out. Other scientists think that the environment changed. Maybe the (25) _____ grew colder and dinosaurs slowly became extinct over several million years. Many scientists think that birds descended from a small kind of dinosaur. If this is true, then dinosaurs are still (26) _____ in the form of modern birds.

22. A. violet B. violence C. violent D. violently

23. A. crashed B. collided C. confronted D. met

24. A. reaching B. arriving C. approaching D. coming

25. A. days B. atmosphere C. weather D. climate 26. A. lively B. alive C. living D. live