求教！GWD6-32题，纠结了很久，论坛关于这道题讨论不多啊~

jyw0411lsq · 发表于 2011-2-13 10:54:37

请教GWD6-Q32
GWD6-Q32: Proposal:Carbondioxide and methane in the atmosphere block the escape of heat into space.So emission of these “greenhouse” gases contributes to global warming.In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.

Objection:The burning of methane generates carbondioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A.Every time a human being or other mammal exhales, there is some carbondioxide released into the air.

B.The conversion of methane to electricity would occur at a considerable distance from the landfills.

C.The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.

D.Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbondioxide.

E.The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.
我对于CDE都有问题！
题目proposal 说烧好，反对者说烧不好，因为照样产生温室气体co2, 就是甲烷虽少，但是二氧化碳增多，温室气体总量那些，
现在counter objectionde 观点，就是说烧更好么？
DE 好像没翻译好，谁给我翻译下？
E说产生甲烷的材料不丢弃，去循环利用，就是接着烧，产生电，而且甲烷排量就减少，不就是说烧好么？支持了proposal 的观点啊？？

sdcar2010 · 发表于 2011-2-13 11:04:26

D is against the Objection made in the stimulus because it chooses the lesser of the two evils by pointing out that if you convert methane to carbon dioxide, you reduce the effectiveness of GreenHouse effect.

jyw0411lsq · 发表于 2011-2-13 11:07:34

D懂了，可是C和e呢？

sdcar2010 · 发表于 2011-2-13 11:21:27

C is supporting the Objection because the methane is used to replace a fuel that has no Greenhouse effect.

E is out of scope. We are not talking about recycling wastes!

hughlv · 发表于 2011-2-13 11:28:33

C的隐含意思是，即使那些methane没有被用来发电，它们还是会被用作清洁燃料的替代物，归根到底还是会被烧掉从而产生温室气体。所以不用来发电并不能降低温室气体排放。

E选项明显是无关的，没在讨论烧还是不烧methane，反而在考虑怎么减少methane。

jyw0411lsq · 发表于 2011-2-13 11:31:29

可是E说的是没有说recycle water啊，E究竟说的是什么意思呢？

sdcar2010 · 发表于 2011-2-13 11:42:37

C的隐含意思是，即使那些methane没有被用来发电，它们还是会被用作清洁燃料的替代物，归根到底还是会被烧掉从而产生温室气体。所以不用来发电并不能降低温室气体排放。

E选项明显是无关的，没在讨论烧还是不烧methane，反而在考虑怎么减少methane。

-- by 会员 hughlv (2011/2/13 11:28:33)

Your translation for C is wrong. C says when methane is used as a fuel to generate electricity, it usually replaces a fuel that won't generate greenhouse gas.

jyw0411lsq · 发表于 2011-2-13 11:45:35

不知道是不是我理解题目的问题，看C选项，
that does not produce any greenhouse gases when burned 是修饰fuel 的,
也就是说甲烷曾经用来发电的，现在用作清洁燃料的替代物，而这个清洁燃料不产生任何温室气体啊？？？（就是前一句的定语从句里面的），
不就是说明了：现在不发电的甲烷即使烧了，也不产生温室气体，否定了objection 的说法啊（甲烷燃烧产生二氧化碳）？
不知道楼上对我的理解有何看法啊？

sdcar2010 · 发表于 2011-2-13 11:50:00

When 甲烷用来发电, 甲烷用来替代 another 清洁燃料, which 不产生任何温室气体.

methane replaces a fuel. methane is not THAT (a fuel)

jyw0411lsq · 发表于 2011-2-13 12:31:24

懂了哈哈，谢谢NN，辛苦了！

本贴相关题目 TN-04-CR-32 (TOBO)

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