题目内容
【题目】 Temperatures________ quite dramatically at night in mountains, so put on some warm clothes before going out.
A. are dropped B. drop
C. are being dropped D. have dropped
【答案】B
【解析】试题分析:句意:山里的气温晚上下降得厉害,所以出门前穿上一些暖和的衣服。山里的气温到晚上骤降是自然状况,应该用一般现在时的主动语态。故选B。
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