are made of A. Glasses; glasses.B. Glass; glassC. Glasses; glass.D. not start out.

发布时间：2020-08-23 04:13:12

    are made  of     
A. Glasses; glasses.
B. Glass; glass
C. Glasses; glass.
D. not start out.

网友回答

A. Glasses; glasses.
B. Glass; glass
(答案→)C. Glasses; glass.
D. not start out.
解析：glass用作不可数名词时，意思是玻璃；当表示玻璃制品，如玻璃杯，眼镜等时，是可数名词。句意：玻璃杯是由玻璃做的。结合语境可知选C。
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