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问题 选择题

在把a2x+ay-a2xy分解因式时，应提取的公因式是（　　）

A．a2

B．a

C．ax

D．ay

答案

a2x与ay与a2xy的公因式为a，

故把a2x+ay-a2xy分解因式时应该提取公因式是a．

故选：B．

单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The woman’s boss didn’t know she was late for work.

B．The woman’s boss asked why she wasn’t there on time.

C．Tile woman’s boss doesn’t have a habit of being on time.

D．The woman’s boss wants her to keep a habit of being punctual.
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单项选择题

营销信息化系统的功能新增和改进，应由（）按照规定格式和要求编写需求报告。

A.需求提出单位的信息中心

B.系统开发商

C.省公司

D.需求提出人（单位）
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