Which of the following words is NOT acom

shuhaiku2019-12-17 17

问题 Which of the following words is NOT acompound word?

选项 A.inefficient B.breakthroughC.grassland D.keyhole

答案A

解析考查构词法。A项是由否定前缀in．+efficient构成的派生词。其他三项都是合成词，breakthrough(突破)=break(打破)+through(穿过)；grassland=grass(草)+land(地)；keyhole(钥匙孔)_key(钥匙) +hole(洞)。

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