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问题 单项选择题 A1/A2型题

人类一般通过三种学习方式来发展行为，分别是（）

A.无意模仿、有意模仿和刻意模仿

B.无意模仿、有意模仿和强迫模仿

C.自愿模仿、强迫模仿和被动模仿

D.自愿模仿、有意模仿和强迫模仿

E.无意模仿、有意模仿和被动模仿

答案

参考答案：B

解析：人类一般通过三种学习方式来发展行为，一般通过无意模仿获得日常生活行为，通过有意模仿获得自己希望、羡慕的行为，通过强迫模仿获得规定行为。

解答题

阅读与理解：

（1）先阅读下面的解题过程：

分解因式：a2-6a+5

解：方法（1）原式=a2-a-5a+5

=（a2-a）+（-5a+5）

=a（a-1）-5（a-1）

=（a-1）（a-5）

方法（2）原式=a2-6a+9-4

=（a-3）2-22

=（a-3+2）（a-3-2）

=（a-1）（a-5）

再请你参考上面一种解法，对多项式x2+4x+3进行因式分解；

（2）阅读下面的解题过程：

已知m2+n2-4m+6n+13=0，试求m与n的值．

解：由已知得：m2-4m+4+n2+6n+9=0

因此得到：（m-2）2+（n+3）2=0

所以只有当（m-n）=0并且（n+3）=0上式才能成立．

因而得：m=2并且n=-3

请你参考上面的解题方法解答下面的问题：

已知：x2+y2+2x-4y+5=0，试求xy的值．
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填空题

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