单选题
What does the passage say about the secondhand smoke?
【正确答案】
A
【答案解析】[解析] 根据“二手烟是严重威胁公众健康的因素之一(...secondhand tobacco smoke is a serious public health risk．)。”可知答案为A。 [听力原文] 19-22 Scientific evidence has been building about the dangers to people who do not smoke from those who do. Now the top doctor in the United States says the evidence cannot be argued: secondhand tobacco smoke is a serious public health risk. Recently Surgeon General Richard Carmona released the government's largest report ever on secondhand smoke. For example, it says nonsmokers increase their risk of lung cancer by up to thirty percent if they live with a smoker. He noted the added dangers faced by children who have to breathe secondhand smoke. These children are at increased risk for sudden infant death syndrome, severe breathing problems and ear infections. The report says smoking by parents also slows lung growth in their children. Scientists have estimated that secondhand smoke kills about fifty thousand adults in the United States each year. The report says separating smokers from nonsmokers or trying to clean the air in buildings is not enough protection. Doctor Carmona noted the progress in establishing smoke-free public places in the United States. Blood tests show that Americans are being exposed to secondhand smoke in fewer numbers and at lower levels since the late 1980s.
单选题
What can be inferred from the passage?
【正确答案】
A
【答案解析】[解析] 此题信息在第三段，即父母吸烟对孩子的影响。选项B太绝对；选项C不对，因为 children will have a slow lung growth；选项D不正确，因为文章没有提到这一信息。
单选题
What is the estimated number of adults killed by secondhand smoke each year in the United States?
【正确答案】
B
【答案解析】[解析] 根据第四段可知在美国，二手烟每年导致约50,000成人死亡。
单选题
Which of the following is NOT a solution to preventing the harm of secondhand smoke?
【正确答案】
D
【答案解析】[解析] 文章提到separate from the smokers以及clean the air in the buildings还不足以解决问题，但暗示了这也是解决问题的办法，文章又提到建立smoke-free public areas的进展，说明这也是积极的解决办法。但文章没有提到是否限制烟草生产问题，所以答案为D。