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【题目】-____ was the zipper invented ____? -Whitcomb Judson.

A. When; / B. Who; / C. Who; by D. What; for

【答案】C

【解析】

句意:——谁是拉链的发明者?——Whitcomb Judson。根据下文Whitcomb Judson.可知上文是提问身份,用who来提问。Who谁;when何时;what什么。主语是 the zipper,疑问词who做介词by的宾语。by表示被……,手段;for表示为了……。根据题意,故选C。.

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