You can get the best result you carry out the experiment under the desired conditions.
A. what if
B. even if
C. only if
D. as if
网友回答
A. what if
B. even if
(答案→)C. only if
D. as if
解析：考查连词：A. what if倘若…又如何？B. even if即使，C. only if只有如果…，D. as if好像，句意：只有你在需要的条件下做实验才能得到最好的结果。选C。