By mentioning microbe, the author intends to______. A．advocate that animals with a nervous system can all learn B．argue that learning is an adaptation to a changing environment C．claim that learning has some kind of side effects D．prove that the adaptation may not include learning with a nervous system
A. A．advocate B.argue C.claim D.prove
【参考答案】
D 属信息推断题。“microbe”出现在第四段第五句。第四段第三句中说到，动物是可以不用神经系统去学习就可以适......