17．Airpollution（污染） has caused lots of deadly diseases．

分析 空氣污染已經(jīng)導(dǎo)致了很多致命的疾�。�

解答 答案是pollution．本題考查語境中選用恰當(dāng)?shù)脑~的適當(dāng)形式．pollution不可數(shù)名詞，污染；air pollution空氣污染；故答案是pollution．

點評 翻譯填空要根據(jù)所提供的漢語意思結(jié)合語境和句子結(jié)構(gòu)選擇恰當(dāng)?shù)脑~、短語或句型；同時注意句子結(jié)構(gòu)和所選詞的形式變化．

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