According to the woman which bus will they take in order to save time?A.Number 14.B.Numbe

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According to the woman, which bus will they take in order to save time?

A.Number 14.

B.Number 13.

C.Number 29.

D.Number 31.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗