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Carbon dioxide, which traps heat in the atmosphere and helps regulate the planet

游客2025-02-25  1
问题 Carbon dioxide, which traps heat in the atmosphere and helps regulate the planet’s surface temperature, is constantly being exchanged between the atmosphere on the one hand and the oceans and terrestrial plants on the other.
选项 A、exchanged between the atmosphere on the one hand and the oceans and terrestrial plants on the other
B、exchanged, on the one hand, between the atmosphere and the oceans and terrestrial plants, on the other
C、exchanged between, on the one hand, the atmosphere, with the oceans and terrestrial plants, on the other
D、exchanged, on the one hand, among the oceans and terrestrial plants, and the atmosphere, on the other
E、exchanged among the oceans and terrestrial plants on the one hand and the atmosphere on the other
答案 A
解析 Parallelism; Idiom
This sentence describes an exchange between the atmosphere and the Earth’s surface using the paired phrases on the one hand and on the other. Preceding both phrases with nouns creates a parallel grammatical structure: the atmosphere on the one hand and the oceans and terrestrial plants on the other. Although three locations are mentioned, between is the correct preposition to describe the exchange since the oceans and terrestrial plants are treated as a set, both members of which are located on the Earths surface.
A Correct. The exchange between the atmosphere and the Earth’s surface is expressed using parallel nouns and the paired phrases on the one hand and on the other.
B The placement of all three nouns between the paired phrases on the one hand and on the other obscures the nature of the exchange and makes it unclear whether the exchange is among all three of the locations, between the first one and the last two, or between the first two and the last one. On the one hand appears to encompass all three of the locations, leaving on the other dangling.
C The preposition with disrupts the expression of an exchange between two locations; the construction on the one hand and on the other is not in parallel form.
D The preposition among, the placement of and the atmosphere between commas, and the lack of parallelism make the meaning of this sentence unclear.
E If the relationship is supposed to be among all three of the locations mentioned, the binary relationship indicator (on the one hand.. .on the other) makes no sense. Alternatively, among could appear to distribute, implicitly, to both sides of the comparison (among the oceans and terrestrial plants on the one hand and (among) the atmosphere on the other). On that interpretation, among the atmosphere makes no sense, because among signals a relationship involving multiple entities, but atmosphere is a singular noun and is not normally construed as either plural or collective.
The correct answer is A.
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