2. 外语
  3. An hour of hunting yields on average about 100 edible calories, as an hour of gathering produces 240.

An hour of hunting yields on average about 100 edible calories, as an hour of gathering produces 240.

admin2017-06-15  27
问题 An hour of hunting yields on average about 100 edible calories, as an hour of gathering produces 240.
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答案连词误用，应把as改为while／whereas。
解析 根据上下文，这里应该是将hunting和gathering的结果进行对比，而不是因果关系。
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