问题
选择题
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
答案
答案：C
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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
答案：C