be up to 达到 living organism 生物体 north and south pole 北极和南极 coastal area 沿海地区 It is estimated that… 据估计…… arctic fox 北极狐
参考答案
考点练透 一、单句填空
1. had been warned; wouldn’t have taken 2. were broken 3. hadn’t heard 4. had had 5. wouldn’t have changed 6. would be 7. would be sitting 8. was; (should) have 9. (should) go; was 10. (should) be give 11. got 12. are 13. be sent 14. didn’t know 15. should/were to rain 16. would die 17. studied 18. had taken 19. went 20. went
二、语篇填空
1. were 2. listened 3. played 4. (should) hold 5. (should) organize 6. (should) be 7. would 8. realized / should realize / were to realize 9. would 10. encouraged
三、语法填空
如果地球上的冰帽都融化的话，会发生什么？
1. But 根据上文和空后的this is not the real problem可知填But。注意首字母要大写。
2. which 分析句子结构可知，much of 2 is reflected back into space是个非限定性定语从句，先行词是sunlight，故填which。
3. cooling 分析句子成分知道，动词cool在此是非谓语，与逻辑主语sunlight是主动关系，故填cooling作结果状语。
4. the 在序数词和形容词最高级及形容词only, very, same等前需用定冠词the。 5. extinction 作宾语用名词形式。
6. between 根据空后的…175 and 225 feet可知。between…and…意为“在……和……之间”。
7. would be flooded 根据前面的If all the ice melted和本段前面的Coastal areas would essentially disappear可知，此处是个虚拟语气，且动词flood 与逻辑主语landmass存在被动关系。故填would be flooded。 8. as/because 根据句意可知， 8 water tables, rivers, and lakes would all rise 9 their previous heights.是个原因。故填as/because。
9. from 句意：从它们以前的高度。
10. unpredictable 语法角度：形容词修饰名词。句意角度：最重要的是，有很多其他人类可能会面临的不可预测的糟糕结果。故填unpredictable最合适。
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