In this passage, scientists warn of______. Abrupt climate change______.

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问题 In this passage, scientists warn of______.
Abrupt climate change______.

选项 A、is unprecedented in human history
B、will not happen in the near future
C、will probably cause dramatic drop in temperature
D、will last thousands of years once it happens

答案D

解析 细节题。此题涉及多个细节,文章开头已讲过,全球气候突然变化将推动气温大幅度上升,所以C不对。根据第五段,有地质证据证明这种急剧气候变化在过去频繁发生过,因此A不对;在第六段中科学家说,这种变化有可能在一代人的时间内再次发生,然后将持续数千年。由此可知,B与此不符,而D是符合的,所以D是本题正确答案。
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