题目内容

邮件合并需要两个文档，分别是：和。

A. 表格文档
B. 数据源文档
C. 主文档
D. 邮件文档

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[音频]Host: You are listening to Radio Norwich, and I'm your host Alan Peters. Up next I will be (1) ________ pop star Anna Lane. Welcome to the show, Anna.Anna: Hi, Alan. It's good to be here.Host: So first why don't you tell us a bit about yourself? Where were you born?Anna: I was born in (2)_, England. My mother is from England and my father is from Turkey.Host: And do you have any brothers or sisters?Anna: No, I don't. I'm an (3)_ .Host: How about cousins?Anna: I have two cousins living in Turkey. I've never met them (4)_ , but sometimes we (5)_____ on Facebook.

使用中断方式实现CPU与外设的数据交换，优点是：

A. 提升了CPU运行效率
B. 程序简单
CPU同时只能服务一个对象
D. 提升慢速外设的响应时间

中断处理函数的入口地址称为（）

A. 断点
B. 中断向量
C. 中断响应
D. 函数指针

CPU的内置ADC转换器转换结束后，产生了中断。按照中断产生的位置称为

A. 外部中断
B. 内部中断
C. 可屏蔽中断
D. 不可屏蔽中断