The clouds, which are formed after the eruption of the volcano, have______the sun and now it is as dark as night.

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问题 The clouds, which are formed after the eruption of the volcano, have______the sun and now it is as dark as night.

选项 A、blocked out
B、blocked in
C、blocked off
D、blocked up

答案A

解析 该题是词汇题,考查动词词组辨析。选项A中的block sth.out意思是“挡住(光线或声音)”,如:Black clouds blocked out the sun.乌云遮住了太阳。选项B中的block sth.in意思是“画(某物的)草图”,如:I have blocked in the shapes of the larger buildings.我勾画出了较大型建筑的轮廓。选项C中的block sth.off意思是“(用路障)封锁、堵塞”,如:The main roads of the city have been blocked off.城市的主要道路被封锁了。选项D中的block sth.up意思是“塞住、堵住(孔、洞),”如:My nose is blocked up.我的鼻子堵塞了。因此,根据题意,选项A为最佳答案。
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