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【题目】There will be robots in the future. But I don’t know if______ are all helpful.

A.theyB.youC.we

【答案】A

【解析】

句意:将来会有机器人。但我不知道他们是否都有用的。

考查人称代词。they他们;you你,你们;we我们。本词指代上文机器人,可知使用they指代;故选A

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