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标题: 【求助GWD1道题~~】 [打印本页]

作者: 水色青空 时间: 2010-2-11 12:11
标题: 【求助GWD1道题~~】

GWD6-Q32:

Proposal:Carbon dioxide 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 carbon dioxide that is released into the atmosphere.

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

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

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

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.

Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide.

The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.

答案是D，可是我不太明白，proposal说要减少温室气体的排放，the methane now emitted from open landfills should instead be burned to produce electricity.反对意见是这样认为的，燃烧甲烷发电会产生二氧化碳进入大气，意思也就是说不能减少温室气体的排放。C选项不就是削弱了反对的意见吗？C的意识就是用来发电的甲烷是一种替代燃料不会产生任何温室气体，那么不就是证明了反对意见不成立吗？？

作者: 水色青空 时间: 2010-2-11 12:11
自己顶一下~~

作者: clarry 时间: 2010-2-12 01:00
童鞋。。
反对者说：烧了甲烷产生二氧化碳，（所以破坏效果相同）
反驳他既是要说明：烧了甲烷，即使产生二氧化碳也比不烧好。

C提出他因，明显不是反驳而是支持啊。。。。
D甲烷比二氧化碳的对大气的影响大。。(block the heat from escape from the earth)。。所以烧了好嘛

作者: wizarmansa 时间: 2010-2-12 08:50
@clarry, 反对者是反对烧的呀

作者: hughlv 时间: 2010-2-12 11:29
感觉水色对C选项的含义理解有些问题

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.

我的翻译是这种甲烷一般会被用作某种不排放温室气体的燃料的替换物。that does not produce ...修饰的是a fuel而不是methane。所以我的意见是C是个无关选项。

作者: 水色青空 时间: 2010-2-12 19:53

童鞋。。
反对者说：烧了甲烷产生二氧化碳，（所以破坏效果相同）
反驳他既是要说明：烧了甲烷，即使产生二氧化碳也比不烧好。

C提出他因，明显不是反驳而是支持啊。。。。
D甲烷比二氧化碳的对大气的影响大。。(block the heat from escape from the earth)。。所以烧了好嘛

-- by 会员 clarry (2010/2/12 1:00:17)

题目说的好像是counter the objection,objection是指反对烧，那么counter the objection就是说支持烧了~~
TX~~看清楚题目啦~~~~O(∩_∩)O~

作者: 水色青空 时间: 2010-2-12 19:54

感觉水色对C选项的含义理解有些问题

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.

我的翻译是这种甲烷一般会被用作某种不排放温室气体的燃料的替换物。that does not produce ...修饰的是a fuel而不是methane。所以我的意见是C是个无关选项。

-- by 会员 hughlv (2010/2/12 11:29:28)

恩恩~~明白了~~substitute for ....是替代的意思，没错~~

搞明白了~~~谢谢你！~~

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