A. facilities B.hens C.votes D.artists
17. When a spacecraft travels, one of the major problems is reentry into the Earth’s _______.
A. surface B. atmosphere C. attitude D. bent
18. This river forms a natural _______ between China and Korea.
A. boundary B. string C. spot D. zone
19. She is already 16years old. But she _______as if she were still a little girl.
A. believes B. absorbs C. accrses D. behaves
20. We are _______ at the rapid progress Mark has made in this semester.
A. distinguished B. annoyed C. astonished D. scored
21. The doctors _______ the medicines to the people in the flood area.
A. distributed B. packed C. prayed D. undertook
22. Much of the news provided by this newspaper is _______, not foreign.
A. domestic B. strain C. purchase D. murder
23. He tried to _______ relations with his former wife but he failed.
A. measure B. maintain C. shelter D. reply
24. He _______ to study harder in the future so that he could have more opportunities to find a better job.
A. resolved B. resorted C. requested D. reserved
25. The _______ work continued for more than a week but there was still no sign of the missing boy.
A. research B. rescue C. vessel D. vast
26. Many kinds of animals are believed to have _________ from the earth
A. withdrawn B. vanished C. found D. hung
27. The engineers in this lab spent several weeks _______ their plans for the new bicycle.
A. counting B. stripping C. elaborating D. casting
28. Pine trees are usually believed to _______ cold weather.
A. guard B. accomplish C. roar D. endure
29. Free medical service is _______ to nearly all the college students in China.
A. favorite B. available C. convenient D. average
30. After working for twenty hours without any rest, the doctors were _______.
A. exhausted B. mounted C. wrapped D. restored
參考答案：16. A 17. B 18. A 19. D 20.C 21.A 22.A 23.B 24.A 25. B 26. B 27. C 28. D 29. B 30. A
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