{01}_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it.
A.Desertification; are working
B.Desertified ; worked
C.Desert; work
D.Desertification; have worked
解析: 第一空填:Desertification“沙漠化”,第二空考时态:句意是:沙漠化是日益严重的世界问题,现在联合国和成员国正努力对付它。用现在进行时,选A。 本题选A。 {02}We could see nothing in the thick fog at a _____ of two meters, so we got lost.
A.length
B.distance
C.space
D.way
解析:句意:我们隔开两米在浓雾中什么也看不见,因此我们迷路了。at a distance 隔开距离,稍远一些。故选B。 本题选B。
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