单选The price of such material was reduced ____.The price of such material was reduced ____.A by 18 percent B to 18 percentC at 18 percentD for 18 percent为什么?

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单选The price of such material was reduced ____.The price of such material was reduced ____.A by 18 percent B to 18 percentC at 18 percentD for 18 percent为什么?
单选The price of such material was reduced ____.
The price of such material was reduced ____.
A by 18 percent
B to 18 percent
C at 18 percent
D for 18 percent
为什么?

单选The price of such material was reduced ____.The price of such material was reduced ____.A by 18 percent B to 18 percentC at 18 percentD for 18 percent为什么?
答案是A
首先根据语感是A,既然要解释的话:
Be reduced by 是固定搭配

A. by表示"相差",如题:下降了18%,比原来差18%. to表示"到",B选项 的意思是下降到18%,根据题意,选A.

A,减少了18个百分点

A