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  3. Thanks in no small part to Al Gore and his film producers, the American public is waking up to the seriousness of global warming

Thanks in no small part to Al Gore and his film producers, the American public is waking up to the seriousness of global warming

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问题     Thanks in no small part to Al Gore and his film producers, the American public is waking up to the seriousness of global warming. What is not so widely appreciated is that unless the US government acts urgently and decisively, this problem could very quickly get very much worse.
    For reasons both economic and political coal is poised to be the fuel of choice in the coming decades as the US weans itself off foreign oil. Coal combustion generates half the US’s electricity and releases about 1.5 billion tons of carbon dioxide a year. If present trends continue, these figures will more than double by 2050, much to the detriment of the world’s climate. Without an alternative fuel, the only solution is to capture and store carbon dioxide from burning coal.
    Overcoming the engineering obstacles in the way of large-scale sequestration of carbon dioxide will be hard enough, but the bigger challenge is one of political will. US companies as yet have no incentive to capture carbon emissions. While moves at state and congressional levels are pushing in the right direction, the ambiguity in the administration’s policy is counterproductive.
    It is time for the US government to put a price on carbon emissions so utilities that invest in technologies to reduce carbon emissions will see their efforts rewarded: Such a move would not only reduce the risks associated with global warming, but also go a long way to restoring America’s green credentials.
According to the author, what adds to the seriousness of global warming?
选项 A、The American public was ignorant of the problem.
B、The American government is doing nothing to deal with the problem.
C、The US will choose coal as the major fuel which will have large carbon emissions.
D、There is no alternative fuel other than foreign oil which has large carbon emissions.
答案C
解析 题目问：作者认为是什么原因加重了气候变暖?通过阅读文章可知，基于经济和政治原因，美国将在未来几十年主要以煤炭作为工业原料，以代替向国外进口石油。而煤炭燃烧会释放大量二氧化碳，对全球气候产生重大破坏作用。第二段第一句“For reasons both economic and political coal is poised to…muchto the detriment of the world’s climate．”所以。答案是C。
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