________ in the climate and soil depends in a way on the experiment ________ carried out by the experts.A.That grows best; has beenB.What grows best; beingC.How does it grow best; is to beD.What does it grow best; was
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B解析本句意思是“在这样的气候和土壤里长什么最好取决于专家们正在进行的实验”．由此可见，第一空应该是句子的主语，而且是个从句，从句里又缺主语，因此只有用what来引导，但D的语序有问题，第二空是现在分词的被动式作后置定语．