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--Thiskindofsportsisexciting.   --Yes,butit'sdangerous....

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问题详情:

--Thiskindofsportsisexciting.   --Yes,butit'sdangerous....

--This kind of sports is exciting

    --Yes,but it's dangerous.One can't do it ____ he or she has got some training.

A.if              B.after             C.when            D.Unless

【回答】

D

知识点:连词

题型:选择题

标签:butitsdangerous.