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考研冲刺真题文章解析（11）

发布时间：2016-03-02 编辑：查字典英语网小编

　　Do you remember all those years when scientists argued that smoking would kill us but the doubters insisted that we didn t know for sure? That the evidence was inconclusive, the science uncertain? That the antismoking lobby was out to destroy our way of life and the government should stay out of the way? Lots of Americans bought that nonsense, and over three decades, some 10 million smokers went to early graves.

　　There are upsetting parallels today, as scientists in one wave after another try to awaken us to the growing threat of global warming. The latest was a panel from the National Academy of Sciences, enlisted by the White House, to tell us that the Earth s atmosphere is definitely warming and that the problem is largely man-made. The clear message is that we should get moving to protest ourselves. The president of the National Academy, Bruce Alberts, added this key point in the preface to the panel s report: Science never has all the answers. But science does provide us with the best available guide to the future, and it is critical that our nation and the world base important policies on the best judgments that science can provide concerning the future consequences of present actions.

　　Just as on smoking, voices now come from many quarters insisting that the science about global warming is incomplete, that it s OK to keep pouring fumes into the air until we know for sure. This is a dangerous game: by the time 100 percent of the evidence is in, it may be too late. With the risks obvious and growing, a prudent people would take out an insurance policy now.

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