◎ 题干
It is not easy to swim across a ______ river.

A. 20-metres-wide
B. 20 metres wide
C. 20-metre-widely
D. 20-metre-wide
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“It is not easy to swim across a ______ river. [ ]A. 20-metres-wide B. 20 metres wide C. 20-metre-widely D. 20-metre-wide …”主要考查了你对  【可数名词(单数名词,复数名词)】【形容词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。