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1、一、词汇与语法专项练习1. In spite of the difficulties we have come across, well go on with the program.2. You will see only the shape of the trees in the dim light.3. No agreement was reached as to how the construction plan should be carried out.4. The fact that most people believe nuclear war should be madnes
2、s does not mean that it will never occur.5. We have to try every means to bring down the costs of the production.6. Only a few people have access to the full facts of the accident.7. The energy released by the chain reaction is transformed into heat.8. You see the lighting the instant it happens, bu
3、t you hear the thunder later.9. The aircraft had reached its altitude of about 39,000 feet.10. The continual breakdowns of the computer have caused serious delays in our project.11. Life depends on the balance between the heat received from the sun and the heat lost to cooler surroundings.12. The co
4、nstruction workers extended the road for three more kilometers.13. The toy train wont start because the battery has run down.14. Since he was convinced of the accuracy of the data, he stuck to his opinion.15. Grain production in the world is soaring, but still millions of people go hungry.16. Wherev
5、er there is a matter, there is energy; all changes of matter involve changes in the form of the energy.17. The water-proof coating will wear away quickly or after many years, depending on use and care.18. Science is a cooperative activity, and everyone can contribute something to it, if he wishes to
6、 do so.19. The automatic doors in supermarkets facilitate the entry and exit of customers with shopping carts.20. While nuclear weapons present potential dangers, the predominant crisis of overpopulation is with us today.21. Had it not been for your encouragement, Id never have invented this machine
7、.22. If we can get over our present difficulties, everything will be all right.23. All buses having been canceled because of the heavy snow, they had to go there on foot.24. In out apartment, there are five rooms, the largest of which is used as a living-room.25. Its highly necessary that the rocket
8、 not be launched until all the preparations have been made.26. Melted iron is poured into the mixer much in the same way as tea is poured into a cup from a teapot.27. Oil, of which there are several different types, is used for many purposes by countries all over the world.28. It seems to be high ti
9、me that this agreement were put to an end.29. The computer has brought about surprising technological changes in the way we produce and organize information.30. On second thoughts theyve decided to give up the purchase of the new assembly line.31. So little did I know about mathematics that the lect
10、ure was completely beyond me.32. When compared with the size of the whole earth, the highest mountain does not seem high at all.33. Well attend an international conference held in Paris provided we have enough time.34. The manager wants to know whether the measures have been agreed upon.35. We make
11、some rubber from petroleum, but natural rubber comes from trees in Southeast Asia.36. Electrical energy is collected in the atmosphere as water is collected and stored in a dam.37. Research findings show we spend about two hours dreaming every night, no matter what we may have done during the day.38
12、. Some companies and factories rely so heavily on computers that there are major problems when their computer systems break down.39. As we know, the oxygen content of Mars is not sufficient to support life.40. The first American to orbit the earth, John Glenn was a pioneer in the US space program.41
13、. Ronald Reagan had served two terms as governor of California before he became President.42. Nothing further was known about the incident, but the captain assured the passengers that the crew would be conducting a thorough investigation.43. The importance of interior design becomes evident when we
14、realize how much time we spend surrounded by four walls.44. Some of the members demanded to know why they had been kept in ignorance of the true facts until they reached the present critical stage.45. To maintain production levels, we must locate and develop or acquire new oil and gas reserves to re
15、place those depleted by production.46. Because of their diversity, seven separate groupings or divisions of algae have been established by botanists.47. Although “nova” means new, novas are actually stars that have existed for a long time and suddenly flare into brilliance.48. Because Mars is farthe
16、r from the sun than Earth is, Mars takes longer to complete a revolution.49. The portrayal of everyday life in the objects of folk art makes it a valuable source of history.50. Prepared by the United States governments Bureau of Labor Statistics, the Consumer Price Index compares current costs of goods and services with past costs.51. As we need plain, wholesome food for the body, we must
