问题 单项选择题

8086/8086向应中断时,不自动压入堆栈的有______。

A.通用寄存器的内容

B.CS的内容

C.IP的内容

D.标志寄存器的内容

答案

参考答案:A

解析:[分析] 中断处理需要进行以下操作:当中断发生时,要保护中断现场,即断点的地址(段地址和偏移地址)和断点的状态,以便中断返回时恢复中断现场。恢复中断现场:恢复中断现场是将标志寄存器、IP和CS的内容进行堆栈操作。所以A)选项符合题意。

阅读理解

Like schools in China, American schools begin in September after a long summer vacation. There are two terms in a school year. The first term is from September to January and the second is from February to June. Usually American children begin to go to school when they are five years old. Most students are seventeen or eighteen years old when they finish high school.

But unlike middle school students in China, high school students in America take only four or five subjects each term. They usually go to the same classes every day and have homework for every class. After class they do all kinds of interesting things.

After high school, many students go to college. They may go to a small or a large one. They usually have to pay a lot for their higher education. So lots of students work after school to make money for their studies.

根据短文内容,选择最佳答案:

小题1: In America, summer vacation lasts ____.

A.one month

B.two months

C.three months

D.more than three months小题2:Students only stay at school for about ____ years before they go to college.

A.five

B.six

C.twelve

D.fourteen小题3: The underline word “vacation” means _________ in Chinese.

A.休闲

B.假期

C.时光

D.生活小题4: Many American students work after class, because they _____.

A.want to see interesting things

B.have to help the other people

C.want to make more friends

D.have to get money for their studies小题5:The article is mainly about ___________.

A.the differences between schools in China and in America.

B.schools in China.

C.schools in America.

D.American students’ school life.

单项选择题