◎ 题干
If you cross the road, you must look at the______ first.
[     ]
A. buses        
B. policeman
C. time        
D. traffic lights
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“If you cross the road, you must look at the______ first.[ ]A. buses B. policemanC. time D. traffic lights…”主要考查了你对  【可数名词(单数名词,复数名词)】  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。