he is ,he seldom shows his precious coins to others.
A. Coin -collector as
B. As a coin -collector
C. A coin- collector as
D. Coin- collector that
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(答案→)A. Coin -collector as
B. As a coin -collector
C. A coin- collector as
D. Coin- collector that
解析:“名词+as+主语+be”是让步状语从句的一种表达式。其中的名词前不可带冠词。