13．Many people are        as to what to do when there is a fire．（　�。�
A．at easeB．at riskC．at a lossD．at a distance

分析 發(fā)生火災(zāi)時(shí)很多人不知道做什么．

解答 答案是C．本題主要考查介詞短語(yǔ)辨析．a(chǎn)t ease安逸；at risk有危險(xiǎn)；at a loss困惑；at a distance在稍遠(yuǎn)處；根據(jù)句意和常理判斷，很多人在發(fā)生火災(zāi)是不知道如何處理，所以答案選擇C．

點(diǎn)評(píng) 本題考查介詞短語(yǔ)的語(yǔ)義辨析，考生在平時(shí)的學(xué)習(xí)中應(yīng)注意積累相應(yīng)的短語(yǔ)和詞匯，并牢記其意思．在做題時(shí)，將短語(yǔ)的意思和題干相結(jié)合，從語(yǔ)法、句子結(jié)構(gòu)尤其是句意上去判斷，句意通順，符合邏輯，即正確答案．

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