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综合类-补全短文(3月13日)_职称英语网校

发布时间:2016-03-18 来源:新东方在线 发布人:wyznl

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补全短文

Doctors believe that secondhand smoke may cause lung cancer in people who do not smoke because nonsmokers often breathe in the smoke from other people’s cigarettes.________. The US Environmental Protection Agency reports that about 53,000 people die in the United States each year as a result of exposure to secondhand smoke.

A、The risk is even higher for children who live in homes where both parents smoke.

B、In the United States,nine million children under the age of five live in homes with at least one smoker.

C、This smoke is called secondhand smoke.

D、No one knows for sure why Mr. Gilson has lung cancer.

【正确答案】 C

【答案解析】 前一句提到,不吸烟者时常吸入他人香烟中冒出的烟,接下来应首选对此烟加以定义的句子。



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