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________its tests successfully, the driv...

________its tests successfully, the driverless car will appear on the market soon.

A.Undergoing B.Undergone C.To undergo D.Having undergone

 

D 【解析】 考查非谓语动词。句意:已经成功经历了测试,无人驾驶车辆很快就会出现在市场上。分析句子可知,此处应用非谓语动词作状语,the driverless car和undergo之间是逻辑上的主动关系,故应用现在分词,又“经历测试”的动作发生在“出现”之前,故用现在分词的完成式having done,故选D项。  
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