16.In order to increase our output, we need to import more production _______.
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A. withdrawn B.vanished C.found D.hung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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