2011年下半年英语四级考试单项选择训练四
2011下半年英语四级考试单项选择训练四16.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
16.A 17.B 18.A 19.D 20.C
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