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__________ the experiment right, I tried...

__________ the experiment right, I tried again and succeeded.

A.Not having done

B.Having not done

C.Not doing

D.Not done

 

A 【解析】考查非谓语动词用法。I与do构成主动关系,根据句意可知没有做到对实验是在我再次尝试之前就发生的,所以使用完成式。句意:因为没有做好实验,我再试了一次,成功了。
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