阅读理解 There is nothing like the suggestion of a cancer risk to scare a parent, especially one of the hyper-educated, eco-conscious type. So you can imagine the reaction when a recent USA Today investigation of air quality around the nation’s schools singled out those in the smugly green village of Berkeley, Calif., as being among the worst in the country; The city’s public high school, as well as a number of daycare centers, preschools, elementary and middle schools, fell in the lowest 10 percent. Industrial pollution in our town had supposedly turned students into living science experiments breathing in a laboratory’s worth of manganese, chromium and nickel each day. This is a city that requires school cafeterias to serve organic meals. Great, I thought, organic lunch, toxic campus.

Since December, when the report came out, the mayor, neighborhood activists and various parent-teacher associations have engaged in a fierce battle over its validity: over the guilt of the steel-casting factory on the western edge of town, over union jobs versus children’s health and over what, if anything, ought to be done. With all sides presenting their own experts armed with conflicting scientific studies, whom should parents believe? Is there truly a threat here, we asked one another as we dropped off our kids, and if so, how great is it? And how does it compare with the other, seemingly perpetual health scares we confront, like panic over lead in synthetic athletic fields? Rather than just another weird episode in the town that brought you protesting environmentalists, this latest drama is a trial for how today’s parents perceive risk, how we try to keep our kids safe— whether it’s possible to keep them safe—in what feels like an increasingly threatening world. It raises the question of what, in our time, “safe” could even mean.

“There’s no way around the uncertainty”, says Kimberly Thompson, president of Kid Risk, a nonprofit group that studies children’s health. “That means your choices can matter, but it also means you aren’t going to know if they do”. A 2004 report in the journal Pediatrics explained that nervous parents have more to fear from fire, car accidents and drowning than from toxic chemical exposure. To which I say: well, obviously. But such concrete hazards are beside the point. It’s the dangers parents can’t—and may never—quantify that occur all of a sudden. That’s why I’ve rid my cupboard of microwave food packed in bags coated with a potential cancer-causing substance, but although I’ve lived blocks from a major fault line for more than 12 years, I still haven’t bolted our bookcases to the living room wall.

单选题 What does a recent investigation by USA Today reveal?
【正确答案】 B
【答案解析】第一段中USA Today的调查结果显示“air quality around the nation's schools singled out those…as being among the worst in the country”, 也就是说伯克利校园周围的空气比较差。
单选题 How did parents feel in the face of the experts’ studies?
【正确答案】 A
【答案解析】文中第二段提到“…whom should parents believe?”, 可见家长对调查结果也很不确信。
单选题 What is the view of the 2004 report in the journal Pediatrics?
【正确答案】 B
【答案解析】最后一段第三句提到“…parents have more to fear from fire, car accidents and drowning than from toxic chemical exposure”, 由此可见家长们应该注意有毒化学品的接触。
单选题 Of the dangers in everyday life, the author thinks that people have most to fear from______.
【正确答案】 B
【答案解析】最后一段作者说到, 具体的危险不是重点, 重点是那些家长们无法量化的、 突然发生的危险。 由此可见作者觉得更可怕的是那些不确定的事物。