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单选题 Please ( ) the water tap when you have finished your washing.

A

turn on

B

turn off

C

turn out

D

turn over

正确答案 :B

解析

【翻译】当你洗完时,请关掉水龙头。 [考点]词义辨析 【精析】B turn on:打开,发动;turn off:关掉,关闭;turn out:证明是,结果是;turn over:翻阅,移交给。根据句意,选B。