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?
A. Every time a human being or other mammal exhales, there is some carbon dioxide 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 carbon dioxide.E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.
答案选的是D，我选的是E，题干中counter的词义由MW查得
Main Entry: 3coun·ter Function:
verb Inflected Form(s):coun·tered; coun·ter·ing
\ˈkau̇n-t(ə-)riŋ\Etymology:Middle English
countren, from Anglo-French
cuntre against, opposite, from Latin
contra; akin to Latin
com- with, together — more at
co-Date:14th century
transitive verb1 a
: to act in opposition to
: oppose b
: offset,
nullify <tried to
counter the trend toward depersonalization>
2
: to assert in answer <we
countered that our warnings had been ignored>
intransitive verb: to meet attacks or arguments with defensive or retaliatory steps
请教在GMAT中该如何理解COUNTER这个词汇？谢谢！
