单项选择题

If roundworms are removed from the soil and placed in a liquid, they thrash helplessly around.

A. carelessly
B. tirelessly
C. powerlessly
D. heartlessly
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There is always excitement at the olympic Games when an athlete breaks a record.
A. beats
B. maintains
C. matches
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Hold the torch steady so I can see better.()

A. continuous
B. quick
C. finn
D. exceptional'
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