下面的短文后有2项测试任务：（1）第23 ~ 26题要求从所给的6个选项中为指定段落每段选择1个小标题；（2）第27 ~ 30题要求从所给的6个选项中为每个句子确定一个最佳选项。
缺正文
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A. Rising of sea levels B. Impact of burning fossil fuels C. Fast feedbacks D. Slow feedbacks E. UNPRedictability of feedback processes F.A prediction of future climate change |
23. Paragraph 2 __________
24. Paragraph 3 _________
25. Paragraph 4 __________
26. Paragraph 5 _________
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A. the exposed ground B. a very long time C. the extra heat D. recorded history E. previously published studies F. rapid exaggeration of impacts |
27. Arctic ice has never been melting so fast in __________.
28. Melting of snow and ice enables sunlight to reach _________.
29. Zeebe came up with his future climate prediction by analyzing _________.
30. After fossil fuels are used up, global warming will continue for _________.