19．Out of curiosity，（出于好奇）he pulled down the handle of the fire alarm．

分析 出于好奇，他拉下了火警的手柄．

解答 答案：out of curiosity 考查翻譯填空．根據(jù)句意及句子結(jié)構(gòu)，要填入out of curiosity，意為"出于好奇"，介詞短語(yǔ)作狀語(yǔ)．

點(diǎn)評(píng) 考查翻譯填空，準(zhǔn)確地理解句子、翻譯句子，然后根據(jù)句意及提示確定所填單詞詞性，正確寫出單詞完成句子，使句意更通順．

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