英语题,求详解
Abeamoflightwillnotbendroundcornersunless____todosowiththehelpofareflectingdevice.Ama...
A beam of light will not bend round corners unless____to do so with the help of a reflecting device.
A made B being made C having made D to be made
答案为A,望各位大侠帮忙解释 展开
A made B being made C having made D to be made
答案为A,望各位大侠帮忙解释 展开
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