Desertification, a process in which the biological productivity of the land is sharply degraded by human abuse and natural pheno

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问题 Desertification, a process in which the biological productivity of the land is sharply degraded by human abuse and natural phenomena, helped cause the famines that have killed hundreds of thousands in recent years.

选项 A、a process in which the biological productivity of the land is sharply degraded by human abuse and natural phenomena
B、a process of the biological productivity of the land being sharply degraded by human abuse and natural phenomena
C、a process of human abuse and natural phenomena that sharply degrade the biological productivity of the land
D、which is the process of human abuse and natural phenomena sharply degrading the land’s biological productivity
E、which is the process of human abuse and natural phenomena that sharply degrade the land’s biological productivity

答案A

解析 Rhetorical construction; Agreement; Logical predication
The purpose of the underlined phrase is to clarify what desertification is. The sentence’s description of it as a process in which the biological diversity of the land is sharply degraded by human abuse and natural phenomena clearly expresses the intended meaning.
A Correct. The sentence as worded is clear and to the point.
B By saying that desertification is a process of the biological productivity of the land..., this version is potentially ambiguous because it is unclear which noun (process, productivity, land) the participial phrase being... phenomena modifies.
C As is the case in answer choice B, this does not clearly indicate that desertification simply is a process that consists in the sharp degradation of the biological productivity of the land by human abuse and natural phenomena. Furthermore, because natural phenomena is plural, there is an ambiguity: it is unclear whether the subject of the verb degrade is both human abuse and natural phenomena, or simply natural phenomena. Also, process at least arguably should be the antecedent of the relative pronoun that, in which case the verb should be degrades.
D It is unclear whether degrading modifies both human abuse and natural phenomena or only natural phenomena.
E Because natural phenomena is plural, there is an ambiguity: it is unclear whether the subject that of the verb degrade has human abuse and natural phenomena as antecedent, or simply natural phenomena. Also, process arguably should be the antecedent, in which case the verb should be degrades.
The correct answer is A.
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本试题收录于: GMAT VERBAL题库GMAT分类
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