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课时提升作业(六)
必修2 Unit 3
Ⅰ. 单项填空
1. At minus 130℃, a living cell can be ______ for a thousand years.
A. spared B. protected
C. preserved D. developed
2. (2013·徐州模拟)—Would you please make a comment on our plan?
—It is fully well-organized and it will ______ in the end, I’m sure.
A. pay off B. put off
C. see off D. let off
3. (2013·福州模拟)We were very ______ at the loud noise made by the work
