问题 单项选择题

MOV AX,[BX]属于( )。

A.立即寻址

B.寄存器寻址

C.寄存器间接寻址

D.寄存器相对寻址

答案

参考答案:C

解析:本题考查寻址方式。寻址方式分为立即寻址、寄存器寻址和存储器寻址三种。立即寻址是指把操作数直接放在指令中,紧跟在操作码后。寄存器寻址的操作数在8位、16位和32位通用寄存器中。操作数在存储器中,操作数的有效地址用SI、DI、 BX和BP等四个寄存器之一来指定,称这种寻址方式为寄存器间接寻址方式。本题是寄存器间接寻址,寄存器BX中的数是操作数地址,该命令把它设为有效地址,取出的数放入AX中。

阅读理解

Our little boy came up to his mother in the kitchen one evening while she was fixing supper,and handed her a piece of paper that he had been writing on. After his mom dried her hands on an apron,she read it,and this is what it said:

For cutting the grass $5.00     

For cleaning up my room this week $1. 00

For going to the store for you $0. 50

Baby-sitting my kid brother while you went shopping $0. 25

Taking out the garbage $1. 00

For getting a good report card $5. 00

For cleaning up and raking the yard $2. 00

Total owed: $14.75

Well,I’ll tell you,his mother looked at him standing there expectantly,and boy,could I see the memories flashing through her mind. So she picked up the pen,turned over the paper he’d written on,and this is what she wrote:  

For the nine months I carried you while you were growing inside me,No Charge.

For all the nights that I’ve sat up with you,doctored and prayed for you,No Charge.

For all the trying times,and all the tears that you’ve caused through the years,there’s No Charge.

For all the nights that were filled with dread,and for the worries I knew were ahead,No Charge

For the toys,food,clothes,and even wiping your nose,there’s No Charge,Son.

When you___________________,the cost of my love is No Charge.

Well,friends,when our son finished reading what his mother had written,there were great big old tears in his eyes,and he looked straight up at his mother and said:“Mom,I sure do love you. ”And then he took the pen and in great big letters he wrote:“PAID IN FULL”.

1.What’s the best title of the passage?      

2.Which sentence in the passage is the closest in meaning to the following one?

Although you have broght me hard thimes andmany tears in these years , you needn’t pay for them.

3.Please fill in the blank in the passage with proper words or phrases to complete the sentence.(within ten words)

4.What do you learn after reading the passage?(within 30 words)

5.Translate the underlined sentence into Chinese.

单项选择题