第31题: [单项选择]Human behavior is mostly a product of learning, whereas the behavior of an animal depends mainly on ______. A. consciousness B. impulses C. instinct D. response 参考答案:C 答案解析:[解析] A.consciousness知觉;B.impulses冲动,通常指人的突然的想法,一时的想法;C.instinct本能,指的是天生的本领,自然倾向;D.response反应。根据题意应选C