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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