______more about the experiment, it wouldn’t have turned out to be a failure.A、H

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问题 ______more about the experiment, it wouldn’t have turned out to be a failure.

选项 A、Had you cared
B、If you cared
C、Should you cared
D、Were you cared

答案 A

解析倒装用法题。若if从句中有were／had／should，可省略if并把它们倒装放到主语之前。本句是对过去事实的虚拟，从句的正确形式为had done，因此可以判断A正确。

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