Once in the Channel, a swimmer's success often depends on whether
A.he is well traineD.
B.he is mentally prepareD.
C.he has a strong will.
D.the weather pattern changes suddenly.

A.he
B.
B.he
C.
C.he
D.
D.the

【参考答案】

D
解析：细节题。根据文章第三段提到的“Once in the Channel, swimmers are al......

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