14．To wash before meals is good_______ our health．（　�。�
A．withB．forC．toD．at

分析 飯前洗手有益于健康．

解答 答案：B．
結(jié)合語(yǔ)境可以推斷這句話表達(dá)的意思是"飯前洗手有益于健康．"，所以設(shè)空處的介詞短語(yǔ)表達(dá)的意思是"有益于…"，應(yīng)該用be good for，故選B

點(diǎn)評(píng) 英語(yǔ)介詞的一個(gè)特點(diǎn)是一詞多義，并且介詞間語(yǔ)義交叉現(xiàn)象很多，習(xí)慣用法也很多，有時(shí)很難從詞義上區(qū)分開來(lái)．故學(xué)習(xí)中要注意不斷總結(jié)，熟記一些介詞和動(dòng)詞的固定搭配用法及習(xí)慣用法，是完成此類問(wèn)題的捷徑．

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