these experiments were successfully completed would we think of going into humans．( )A．If onlyB．If everC．Only ifD．Even if 题目和参考答案——青夏教育精英家教网—

题目内容

13． these experiments were successfully completed would we think of going into humans．（　　）

A．

If only

B．

If ever

C．

Only if

D．

Even if

分析只有这些实验成功完成我们才会考虑在人类身上（进行试验）．

解答答案：C
解析：A如果；B很少；难得；C只有…才；D即使；甚至．根据后面的"我们才会考虑在人类身上（进行试验）"可知前面说的是"只有这些实验成功完成"，作为后面的一个前提条件．故本题答案为C选项，其余选项均不符合题意．拓展：only if位于句首时其后的主句要用部分倒装，而本题其余选项后面的主句均不需倒装．

点评本题考查连词辨析．做此类题目时一定要熟悉每个连词的含义并结合用法与其在句中的成分来选择合适的答案．

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