59. His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas. (A) in which great ice sheets had existed in now currently temperate areas (B) in which great ice sheets existed in what are now temperate areas (C) when great ice sheets existed where there were areas now temperate (D) when great ice sheets had existed in current temperate areas (E) when great ice sheets existed in areas now that are temperate
In which or when can be used interchangeably in this sentence. The verb form here should be the simple past existed rather than the past perfect had existed. Now currently is redundant because both adverbs express the same idea. A Had existed should be existed; now currently is redundant B Correct. The simple past verb tense is correctly used in this sentence; now is placed and used correctly. C Where there were areas now temperate is wordy and confusing D Had existed should be existed; current should be currently; in current temperate areas is unclear E Now is an adverb and should be placed just after The correct answer is B.
我想问的是如果把B选项中的what换成where是否依然正确??谢谢!~~
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