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  3. Global Warming Few people now question the reality of global warming and its effects on the world’s climate. Many scientists

Global Warming Few people now question the reality of global warming and its effects on the world’s climate. Many scientists

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问题                             Global Warming
    Few people now question the reality of global warming and its effects on the world’s climate. Many scientists put the【C1】______for recent natural disasters on the increase【C2】______the world’s temperatures and are convinced【C3】______, more than ever before, the Earth is at【C4】______from the forces of the wind, rain and sun. According to【C5】______, global warming is making extreme weather events,【C6】______as hurricanes and droughts, even more ______【C7】and causing sea levels all around the world to【C8】______.
    Environmental groups are【C9】______pressure on governments to take action to reduce the【C10】______of carbon dioxide which is given off by factories and power plants,【C11】______attacking the problem at its source. They are in【C12】______of more money being spent on research into solar, wind and wave energy devices, which could then【C13】______existing power stations.
    Some scientists,【C14】______, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to【C15】______ the results. Global warming, it seems, is here to stay.
【C5】
选项 A、it
B、them
C、these
D、those
答案B
解析 根据上下文，下面叙述的还是很多科学家的观点，应用them来指代他们，故选B。
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