A.It is not at all dangerous if one is careful.B.It won\...

A.It is not at all dangerous if one is careful.B.It won"t cost much to buy a bike.C.It does them a lot of good.D.It is interesting.请帮忙给出正确答案和分析,谢谢!
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回答者:网友
正确答案:C

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