单选题
What do people think of the suggestion of using nuclear weapon to change the course of asteroids?
A、
It sounds practical but it may not solve the problem.
B、
Further research should be done before it is proved to be capable.
C、
It may create more problems than it might solve.
D、
It is a waste of money because a violent coming course of asteroids with the earth is very. unlikely.
【正确答案】
C
【答案解析】
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