2. 外语
  3. A、The number of roles human beings play is much more than that of insects. B、The roles human beings play is more important. C、Th

A、The number of roles human beings play is much more than that of insects. B、The roles human beings play is more important. C、Th

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问题
选项 A、The number of roles human beings play is much more than that of insects.
B、The roles human beings play is more important.
C、The insects have fewer opportunities to change their roles.
D、Different individual performs different functions in human society but not the case in insect society.
答案A
解析 讲话人很清楚地告诉我们，昆虫角色很少，但人类社会有上千种不同的职位，故选A)项。
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