Trends of climate change can be most easily sensed ______ . [br] According to Ar

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问题 Trends of climate change can be most easily sensed ______ . [br] According to Armstrong, ______ .

选项 A、slight changes in global mean temperature are insignificant
B、the amounts of snow and ice around the world began to decrease in the 1990s
C、the past 100 years witnessed the greatest rise in global mean temperature in human history
D、the global mean temperature increased more than 0.5 degree Fahrenheit in the last 25 years

答案 D

解析细节题。本题是问文中所涉及的Armstrong的观点。根据第三段，Armstrong认为全球平均气温在过去的100年间上升了1华氏度，而其中一半多的上升是发生在过去25年间。这并不意味着全球平均气温在过去的100年间的上升是在人类历史上最快的，所以C不对，而D符合。在第四段中又讲，他认为尽管这个数字看起来很小，但足以产生很大影响，因此A不对；而且他还说在过去几十年间世界冰雪量一直在减少，所以B不符合此意。故D是本题正确答案。

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