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The unemployment rate in this district　　　　from 6% to 5% in the past two years.

A. has fallen      B. had fallen         

 C. is falling           D. was falling

A


解析:

考查動(dòng)詞時(shí)態(tài)。根據(jù)時(shí)間狀語(yǔ)in the past two years可知用現(xiàn)在完成時(shí)，選A。

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