2. 外语
  3. Human behavior is mostly a product of learning, ______ the behavior of animals depends mainly on instinct.

Human behavior is mostly a product of learning, ______ the behavior of animals depends mainly on instinct.

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问题 Human behavior is mostly a product of learning, ______ the behavior of animals depends mainly on instinct.
选项 A、whether
B、whereas
C、whenever
D、whichever
答案B
解析 连词用法题。句子前半部分提到人类的行为，后半部分提到动物的行为，之间相互比较。故B项whereas“而，然而”正确。
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