2. 职称英语
  3. Lacking information about energy use, people tend to overestimate the amount of

Lacking information about energy use, people tend to overestimate the amount of

游客2024-01-12  57
问题 Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters.
选项 A、equipment, such as lights, that are visible and must be turned on and off and underestimate that
B、equipment, such as lights, that are visible and must be turned on and off and underestimate it when
C、equipment, such as lights, that is visible and must be turned on and off and underestimate it when
D、visible equipment, such as lights, that must be turned on and off and underestimate that
E、visible equipment, such as lights, that must be turned on and off and underestimate it when
答案 D
解析 This sentence, as worded, has a subject-verb agreement problem: the noun equipment, not lights, serves as the subject of the verb are; because equipment is singular, is should be used. Furthermore, the sentence would read more clearly if visible equipment were used rather than equipment... that [is] visible. This would create a less wordy sentence that has a more parallel structure, in which visible equipment is contrasted with unobtrusive equipment.
A    This version is flawed for the reasons given above.
B    This version has the same subject-verb agreement problem as in A. Furthermore, it is unclear what the referent of the pronoun it is here. Finally, this version, like A, is wordy, and its structure is not parallel.
C    This version correctly uses the singular verb is. However, as in choice B, the pronoun it has no clear referent. Finally, this version, like A and B, is wordy, and its structure is not parallel.
D    Correct. This version is free of subject-verb agreement errors and its structure is parallel.
E    Although this version is free of subject-verb agreement errors and appropriately uses a parallel structure, it retains the problem from choices B and C: the pronoun it has no clear referent.
The correct answer is D.
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