Although the feeding activities of whales and walruses give the seafloor of the Bering Shelf a devastated appearance, these acti

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问题 Although the feeding activities of whales and walruses give the seafloor of the Bering Shelf a devastated appearance, these activities seem to be actually (i)____ to the area, (ii)____ its productivity.

选项 A、destructive…counterbalancing
B、rehabilitative…diminishing
C、beneficial…enhancing
D、detrimental…redirecting
E、superfluous…encumbering

答案C

解析 空格(i):
- 方程等号:Although尽管,反义重复。
- 强词和对应:前文说鲸鱼和海象的觅食活动带来了毁灭性的外观。these activities指代前文的feeding activities,因此devastated指向空格(i),根据Although取反,体现这些活动是“没有破坏性的”或“破坏性小的”。destructive破坏性的,rehabilitative康复的,beneficial有利的,detrimental有害的,superfluous多余的。选项B和C合适。
空格(ii):
- 方程等号:逗号,同义重复。
- 强词和对应:逗号前面对这些觅食活动是正评价,因此空格(ii)和空格(i)同义重复,体现对生产率是“有利的”作用。counterbalance抵消(错),diminish减少(错),enhance增加(对),redirect改变方向(错),encumber阻碍(错)。综合空格(i),答案选C。
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