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【题目】_________ his conclusion on the evidence he collected on the scene, he proved that the murderer was guilty.

A. BasedB. Basing

C. To baseD. Being based

【答案】B

【解析】

考查非谓语动词。句意:根据他在现场收集的证据,他得出了结论,证明凶手是有罪的。本句已经存在谓语动词且句中没有连词,故base只能做非谓语动词与逻辑主语he构成主谓关系,故用现在分词basing。故选B

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