The passage suggests that Martinson believes which of the following about deep waters in the Antarctic region?答案解析-雷哥GRE

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In a plausible but speculative scenario, oceanographer Douglas Martinson suggests that temperature increases caused by global warming would not significantly affect the stability of the Antarctic environment, where sea ice forms on the periphery of the continent in the autumn and winter and mostly disappears in the summer. True, less sea ice would form in the winter because global warming would cause temperatures to rise. However, Martinson argues, the effect of a warmer atmosphere may be offset as follows. The formation of sea ice causes the concentration of salt in surface waters to increase; less sea ice would mean a smaller increase in the concentration of salt. Less salty surface waters would be less dense and therefore less likely to sink and stir up deep water. The deep water, with all its stored heat, would rise to the surface at a slower rate. Thus, although the winter sea-ice cover might decrease, the surface waters would remain cold enough so that the decrease would not be excessive.

The passage suggests that Martinson believes which of the following about deep waters in the Antarctic region?

(A) They rise to the surface more quickly than they would if global warming were to occur. (B) They store heat that will exacerbate the effects of increases in atmospheric temperatures. (C) They would be likely to be significantly warmed by an increase in atmospheric temperatures. (D) They would be more salty than they currently are if global warming were to occur. (E) They are less likely to be stirred up when surface waters are intensely salty than when surface waters are relatively unsalty.

正确答案： A 耗时：

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当前版本由小白馒头330 更新于2022-10-18 01:46:56 感谢由小白馒头330 对此题目的解答所做出的贡献。

全文逻辑链：全球变暖-》less sea ice -〉 less surface salt -》less likely to sink and stir up deep water.-〉surface cold enough；
所以选项a中：they would if global warming were to occur的情况是全球变暖的情况，因此surface cold。所以如果没有全球变暖的话(than前面的前半句话），会说surface温度高。因此a对应全文。
选项b翻译：deep water储存的热量会加剧恶化全球变暖所带来的影响。全球变暖带来的影响是surface cold对吧，如果加剧恶化就是让surface cold，然而文章中说的反而是deep water能够让surface更加暖“The deep water, with all its stored heat, would rise to the surface at a slower rate. ”。所以b选项和文章相反。
选项c：文章没有提到
选项d：deep water盐不盐的文章没提到，注意这道题的主要对象是deep water。文章只有提到surface salt的情况。
选项e：与文章相反，文章是surface less salty 所以less stir up，这边说的是因为很多盐才less stir up，完全相反
综上，只有a正确
当前版本由长颈鹿在哪里呀更新于2019-04-01 10:59:24 感谢由长颈鹿在哪里呀对此题目的解答所做出的贡献。

这道题定位回到文中最后一句Thus, although the winter sea-ice cover might decrease, the surface waters would remain cold enough so that the decrease would not be excessive.而题干将现在的情况与气温上升后的情况来进行比较，所以应该要选A

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全文逻辑链，关键点在于理解however 的转折，前面说全球变暖了，温度上升，however转折心里预判反方向，the effect of a warmer atmosphere may be offset as follows.这个意思是说，下面的这些原因会导致全球变暖（温度上升的作用）被offset，后面The formation 。。。到thus。。。的一堆佐证推论得出结论都是说the surface waters would remain cold enough（也就是说和前面预判的温度上升被offset，温度低），所以简单来说就是要有remain cold的特点的话，前面的less sea ice>less salt>less salty >less dense >less sink stir up >slower rate 的deep water都是remain cold的特点。（温度低），则气候变暖（温度高）就和前面的一连串佐证的“less sea ice>less salt>less salty >less dense >less sink stir up >slower rate 的deep water”取反就行了。所以看题目：问的是deep water，看a： deep water 速度变快 if global warming（温度高）符合上面的逻辑链取反条件，所以选a。

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2023-01-30 11:01:53

小白馒头330

全文逻辑链：全球变暖-》less sea ice -〉 less surface salt -》less likely to sink and stir up deep water.-〉surface cold enough；所以选项a中：they would if global warming were to occur的情况是全球变暖的情况，因此surface cold。所以如果没有全球变暖的话(than前面的前半句话），会说surface温度高。因此a对应全文。选项b翻译：deep water储存的热量会加剧恶化全球变暖所带来的影响。全球变暖带来的影响是surface cold对吧，如果加剧恶化就是让surface cold，然而文章中说的反而是deep water能够让surface更加暖“The deep water, with all its stored heat, would rise to the surface at a slower rate. ”。所以b选项和文章相反。选项c：文章没有提到选项d：deep water盐不盐的文章没提到，注意这道题的主要对象是deep water。文章只有提到surface salt的情况。选项e：与文章相反，文章是surface less salty 所以less stir up，这边说的是因为很多盐才less stir up，完全相反综上，只有a正确

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2022-10-18 01:46:21

166918uiex

b为啥不对

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2022-08-08 10:15:18

398772rel

文中‘ The deep water, with all its stored heat, would rise to the surface at a slower rate.’讲的是温度上升的情况，即温度高的时候，上升很慢。对应的就是A选项 than 后面的内容‘they would if global warming were to occur.’ 如果把if条件限定的内容看反了的话就会选错

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2021-11-28 11:54:48

399685mwtvn

"The deep water, with all its stored heat, would rise to the surface at a slower rate." should be this line ..... so hard....

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2021-10-19 14:49:45

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