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  3. People have worded about smog for many years, and the government has spent billions of dollars to try to clean up the air of big

People have worded about smog for many years, and the government has spent billions of dollars to try to clean up the air of big

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问题     People have worded about smog for many years, and the government has spent billions of dollars to try to clean up the air of big cities. Now we find that there is no escape from unhealthful air. Recent studies have shown that air inside many homes, office buildings, and schools is full of pollutants: chemicals, bacteria, smoke, and gases. These pollutants are causing a group of unpleasant and dangerous symptoms that experts call "sick building syndrome". A "sick building" might be a small house in a rural area or an enormous office building in an urban center.
    A recent study reached a surprising conclusion: Indoor air pollution is almost always two to five times worse than outside pollution! This is true even in buildings that are close to factories that produce chemicals. The solution to this problem would seem very clear: Open your windows and stay out of modern office buildings with windows that don’t open.
    Unfortunately, the solution might not be so simple, better ventilation—a system for moving fresh air—can cut indoor air pollution to a safe level, but lack of ventilation is seldom the main cause of the problem. Experts have found that buildings create their own pollution. Imagine a typical home. The people who live there burn oil, wood, or gas for cooking and heating. They might smoke cigarettes, pipes, or cigars. They use chemicals for cleaning. They use hundreds of products made of plastic or particle board; these products—such as the shelves in Oakland High School—give off chemicals that we can’t see but that we do breathe in. And in many areas, the ground under the building might send a dangerous gas called radon into the home. The people in the house are breathing in a "chemical soup", and medical experts don’t yet know how dangerous this is for the human body.
According to the passage, which of the following is true of "sick building syndrome"?
选项 A、All people can be ill when they breathe in indoor air with harmful ingredients.
B、Only old buildings can make people sick.
C、Outdoor air pollution is no less than indoor air pollution.
D、One shouldn’t stay in the house where some people are seriously sick.
答案A
解析 细节题。题目问的是哪一项和“病态楼宇综合征”有关。通过第一段最后一句可知各种房子都可能导致“sick building syndrome”，而并非只有旧房子，由此可排除选项B；选项C的侧重点不对；文中没有提及选项D的内容；只有选项A的说法正确。故选A。
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