A beam of light will not bend（弯曲）round corners unless___

题型：单项选择难度：0.65 引用次数：107 题号：11279017

A beam of light will not bend（弯曲）round corners unless____ to do so with the help of a reflecting device（反射装置）。

A．made

B．being made

C．having made

D．to be made

19-20高二上·广东江门·期中查看更多[1]

更新时间：2020-10-09 18:25:50 |

【知识点】状语从句中的省略

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A．do carefully

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C．carefully done

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