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Humans are having a hard enough time coping with the natural variability in our environment, which causes disasters such as heat

admin2015-03-20  74
问题     Humans are having a hard enough time coping with the natural variability in our environment, which causes disasters such as heat waves, wildfires and floods. Waiting without actions makes all three of those problems—and many more—worse.
    That was the serious warning from the world’s scientific community last week, in the latest report from the Intergovernmental Panel on Climate Change(IPCC). The U.N.-chartered body produced its first comprehensive report since 2007 on the climate changes.
    There are some things the scientists are very confident will happen in a warming world over the next century. Sea levels will rise, threatening coastal cities and low-lying nations. Island states could get hit very hard. There are probably going to be relatively more extremely hot days than extremely cold ones, and food-borne illnesses will probably increase.
    But part of the risk of climate Change is that scientists don’t have a crystal ball to foretell how, exactly, the environment will respond to rising temperatures, and they are trying to predict effects over the course of decades. The experts anticipate that forests could die off and that wetland and rain forest ecosystems could crumble. They anticipate effects on water systems just about everywhere: more flooding in many places, less water in dry areas, more humidity inhibiting human labor in wetter climes.
    There could also be some positive effects for some, the experts note. They predict fewer deaths due to cold, but more due to heat. Some areas of the planet, particularly in higher latitudes, might be come more fertile. But lower crop yields elsewhere will outweigh those benefits. Indeed, the planet’s green lands along the equator might be much worse off. The scientists, for example, predict that fish and other aquatic life will flee elsewhere as ocean temperatures change. And, of course, there could be effects, good and bad, that the experts aren’t anticipating. That shouldn’t be comforting.
    The experts leave little doubt about the right response: Cut pollution to head off the worst possible consequences and prepare for the risks the world is unlikely to avoid, given its inability to slash emissions quickly. Delaying action, they note, reduces the world’s options and affords vulnerable people less time to cope. Isn’t it time we did something?
According to Paragraph 1, we know that______.
选项 A、climate change can cause only three types of disasters
B、we can wait until the climate become what it used to be
C、human beings have very limited power to deal with climate problems
D、climate change makes people feel that they must learn to meet challenges
答案C
解析 根据题干关键词定位到第一段。由Humans are having a hard enough time copingwith the natural variability in our environment(人类正在艰难地应对环境中的自然变化)可知，人类在应对环境变化方面是很艰难的，故C项“人类解决气候问题的能力有限”为正确答案。其中的limited是对hard的改写。A项只是气候变化导致的有代表性的例子，属于以偏概全。B项是对段落含义的曲解，不符合题意。D项“气候变化使人们感到必须学会面对新挑战”属于过度推断，原文并没有提及。
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