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第1题

人工呼吸法操作步骤 ：1、使触电者鼻（或口）紧闭，救护人深吸一口气后紧贴触电者的口（或鼻），向内吹气，为时约（ ）秒钟。2、吹气完毕，立即离开触电者的口（或鼻），并松开触电者的鼻孔（或嘴唇），使其自行呼气，为时约（ ）秒钟。(2 分) A
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第2题

Christakis says the effect triggers "quitting cascades" analogous to lights going outdown the line on a power grid until
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第3题

Adults constantly exposed to cigarette smoke have been found to be more susceptible todeveloping smoking related illness
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第4题

Smoking has been banned in all enclosed public places throughout most of the UnitedKingdom since July 1st, 2007 () . A
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