问题 单项选择题

寄存器寻址方式中的操作数放在______中。

A.高速缓存
B.储存单元
C.通用寄存器
D.程序计数器

答案

参考答案:C

解析: 寻址方式就是解释操作数的地址,常用的有立即寻址、寄存器寻址、直接寻址、寄存器间接寻址、寄存器相对寻址、基址变址寻址和相对基址变址寻址7种寻址方式。
寄存器寻址方式:操作数在寄存器中,指令指定寄存器。16位操作数寄存器可以是AX、BX、CX、DX、SI、DI、SP和BP,8位操作数可以是AL、AH、BL、BH、CL、CH、DL和DH。例如,“MOV AX,BX"指令,如果执行前(AX)=3064H,(BX)=1234H,则执行后(AX)=1234H,(BX)保持不变。所以本题的答案选C。

单项选择题
阅读理解

A few days ago,I went to school with lots of books,hoping to get a locker (锁柜).Suddenly,it started raining heavily. I hurried to pay for my locker,but I was disappointed when they informed me they only accepted cash. I was $7.00 short,which meant I had to carry the books back home. It would be an exhausting (令人筋疲力尽的) two­hour journey back home with all those books.

An elderly gentleman nearby noticed my problem. He asked how much cash I needed. When I told him I was $7 short,he quickly took out the money from his wallet. “You don’t have to pay me back,”he said. I was speechless;I didn’t know whether to take the money or come back with the books the next day. A young student who was working there noticed my hesitation. “He’s really nice,” said the student. “I was starving this morning and he bought breakfast for me. He always helps people in different ways.”

The next day,I went to him and thanked him for trusting me and lending me the money. He said he forgot about it and didn’t expect I would give it back. “I’m very happy,”he said,“not because I’m getting my money back,but because this is the right way to go—whatever you get from this world,give it back as much as you possibly can. Spread kindness around the world with the smallest things you can do.”

Later,I found out he wasn’t involved with any charity organizations. He has been performing these types of acts for years. Earlier,someone had done something incredibly kind for him and he has been spreading the kindness ever since. He taught me a very important lesson in life—we come to this world with nothing and we will leave with nothing. Whatever we own,it will become somebody else’s and whatever we leave,it will become somebody else’s.

小题1:When the old gentleman offered the money,the writer was________.

A.touched

B.hesitant

C.amazed

D.embarrassed小题2:From Paragraph 3 we learn that________.

A.the gentleman worked in the school

B.the gentleman was kind but forgetful

C.the gentleman refused to take back the money

D.the gentleman thought it right to give back to society小题3:Why had the gentleman been doing acts of kindness?

A.He wanted to join the charity organizations.

B.He managed a lot of other people’s money.

C.He had received help from others before.

D.He thought money was of little importance.