单项选择题

If the earth suddenly ______ spinning, we would all fly off it.

A. had stopped
B. stopped
C. has stopped
D. would stop
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单项选择题
Jim is so ______ after injuring his leg that he has great difficulty in walking.
A. hurt
B. lame
C. wounded
D. uncomfortable
单项选择题
______ with the developed areas, people's living standard of this province is not high at all.
A. Compare
B. While comparing
C. When compared
D. Comparing
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