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I am afraid that Mrs. Black doesn’t believe her son is able to design such a complicated machine,       ?

A.does sheB.aren’t IC.is heD.isn’t he

A

解析试题分析:句意:恐怕布莱克太太不相信她的儿子会设计这样一个复杂的机器,是吗? I am afraid此处相当于I think,反意疑问句的陈述部分为I(We) think(believe, suppose, consider) + that从句时,问句部分的动词及主语与that从句内的动词和主语保持一致,所以它的反意疑问句是does she。故选A。
考点: 考查反义疑问句的用法。

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