these experiments were successfully completed would we think of going into humans.A. If

发布时间：2020-08-17 08:14:46

     these experiments were successfully pleted would we think of going into humans.
A. If only
B. Only if
C. So that
D. Even if

网友回答

A. If only
(答案→)B. Only if
C. So that
D. Even if
解析：句意：只有这些实验完全成功以后，我们才会考虑把它应用于人类。根据“would we think of going into humans.”可知这个句子使用了部分倒装，所以用only+状语从句位于句首，选B。
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