题目内容
【题目】—How should we teenagers be when crossing the road?
—We mustn’t cross the red traffic lights.
A. serious B. careful C. pleased D. popular
【答案】B
【解析】句意：----当在过马路时我们青少年要怎样小心？------我们禁止闯红灯。考查形容词辨析。A. serious严肃的，严重的；认真的，庄重的；B. careful仔细的，小心的；周到的；C. pleased高兴的；D. popular流行的。结合句意和语境可知选B。
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