Question

______ the teacher has given permission, ______allowed to use the equipment in the lab.

A. Only if,  are the students      B. If only, the students are

C. If only,  are the students       D. Only if  the students are

 

Answer 1

【答案】

A

【解析】

试题分析：句意：只要老师答应，学生被允许使用实验室的设备。这里是only修饰if的从句放在句首时，句子的主句用部分倒装，故选A。

考点：考查倒装的用法。