练习题:
1.In order to increase our output, we need to import more production _______.
A. facilities
B.hens
C.votes
D.artists
2.When a spacecraft travels, one of the major problems is reentry into the Earth’s _______.
A. surface
B.atmosphere
C.attitude
D.bent
3.This river forms a natural _______ between China and Korea.
A. boundary
B.string
C.spot
D.zone
4.She is already 16years old. But she _______as if she were still a little girl.
A. believes
B.absorbs
C.accrses
D.behaves
5.We are _______ at the rapid progress Mark has made in this semester.
A. distinguished
B.annoyed
C.astonished
D.scored