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【题目】They wonder ________ robots will make humans lose their jobs or not.
A.that
B.if
C.whether
D.so

【答案】C
【解析】句意:他们想知道机器人是否会使人类失去工作。考查连词辨析。A. that宾语从句引导词,无实义;B. if是否,连词;C. whether是否,连词;D. so因此,连词。本题是宾语从句,根据句意,可排除A和D选项。if和whether都可以引导宾语从句,但区别在于,当句中有or(not)时,只能用whether而不可用if。故选C。

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