单项选择题

The world's governments have done ______ nothing to combat the threat of nuclear accidents.

A．rarely
B．nearly
C．barely
D．intrinsically
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单项选择题
Why did you ______ such a good job when jobs are so hard to get
A．throw about
B．throw off
C．throw up
D．throw out
单项选择题
The newly elected leader has declared his intention of cleaning ______ the civil administrative organs.
A．down
B．off
C．up
D．out
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