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  3. Smoking is harmful to our health and is extremely hazardous to children. Parents who smoke often open a window or turn on a fan

Smoking is harmful to our health and is extremely hazardous to children. Parents who smoke often open a window or turn on a fan

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问题     Smoking is harmful to our health and is extremely hazardous to children. Parents who smoke often open a window or turn on a fan to【B1】______the air for their children, but experts now have【B2】______a related threat to children’s health that isn’t as easy to get rid of: third-hand smoke.
    Doctors from Mass General Hospital for Children in Boston【B3】______the term. It is now being used to describe the【B4】______yet toxic gases and particles that【B5】______to smokers’ hair, clothing and the carpet even after second-hand smoke has been cleaned from a room. The residue(残留物)【B6】______ heavy metals, and even【B7】______materials that young children can get on their hands,【B8】______if they’re crawling or playing on the floor.【B9】______. People agree with the statement that【B10】______. However, far fewer of those surveyed were aware of the risks of third-hand smoke. They believe that when their kids are out of the house, they might smoke【B11】______.
【B6】
选项
答案includes
解析 句意推断题。空格所在的句子缺少谓语，所以要填入动词。此处讲述了各种残留物的种类。结合录音可得答案为includes，意为“包含”。
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大学英语四级

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