◎ 题干

. Since last year, the global economic slowdown ________ in many countries. It is expected that the world economy will not recover until the end of 2010.
A.is spreadingB.spreadC.had spreadD.has been spreading
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“. Since last year, the global economic slowdown ________ in many countries. It is expected that the world economy will not recover until the end of 2010.A.is …”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。