◎ 题干
— English is very useful. 
— Yeah, in many countries in the world it ____ a foreign language.
[     ]
A.uses as
B.is used as
C.is used for
D.is used by
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— English is very useful.— Yeah, in many countries in the world it ____ a foreign language.[ ]A.uses as B.is used as C.is used for D.is used by …”主要考查了你对  【被动语态】【介词】  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。