参考答案:B
The achievements of the greatest minds in science could never have been reached if it had not been for the patient and accurate work of hundreds of other people.()
结构应用。此句是虚拟语气用法。虚拟语气中含有if条件句,主语又为it时,应省略if,句子倒装;又因此句表达的是与过去事实相反的假设,应用过去完成时,所以选项D正确。
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