18. the author’s opinion of the manufacturing process described in the passage is based primarily on the fact that
(a) plastic is unlikely to be durable enough for high-quality sailboat hulls
(b) the research costs of developing the process outweigh any savings possible from the use of the plastic
(c) a small sailboat is not normally regarded as a high-tech product
(d) hulls for small sailboats can be made from wood without converting it into plastic
(e) many other spheres of human activity are in far greater need of technological research
19. which of the following, if true, would most seriously weaken the author’s conclusion?
(a) the plastic produced by the process is considerably lighter, stronger, and more watertight than wood.
(b) the wood used in producing the plastic is itself in increasingly short supply.
(c) the cost of the manufacturing process of the plastic increases the cost of producing a sailboat hull by 10 to 15 percent.
(d) much of the cost of the research that developed the new process will be written off for tax purposes by the chemicalpany.
(e) the development of the new plastic is expected to help make the chemicalpany an important supplier of boat-building materials.
20. a young man eager to be a master swordsman journeyed to the home of the greatest teacher of swordsmanship in the kingdom. he asked the teacher, “how quickly can you teach me to be a master swordsman?” the old teacher replied, “it will take ten years.” unsatisfied, the young man asked, “what if i am willing to work night and day, every day of the year?” the teacher replied, “in that case, it will take twenty years.”
the teacher’s main point is that an important quality of a master swordsman is
(a) humility
(b) willingness to work hard
(c) respect for one’s elders
(d) patience
(e) determination
keys:
1. a 2. d 3. d 4. e 5. b 6. c 7. c 8. a 9. a 10. c
11. e 12. d 13. e 14. b 15. c 16. c 17. b 18. d 19. a 20. d 本文共4页：第 页 TAG:暂无联系方式