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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】______.
【B5】
选项
答案cling
解析 语义推断题。空格所在的定语从句中缺少谓语，所以要填入动词，先行词是复数形式，所以填动词原形。此处想要表达的是吸烟者头发和衣服上的有毒的气体和微粒同样对孩子的健康有害。结合录音可得答案为cling，意为“附着”。
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大学英语四级

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