Right, so then you get some of what you want, or something like it, or something that will do all fight; and for years you are too busy to do more than live in the present and put one foot in front of the other, your goals stretching little beyond the day when the boss has a stroke or the moment when the children can bring you tea in bed—and the later moment when they actually bring you hot tea, not mostly slopped in the saucer. However, I have now discovered an even sweeter category of ambition. When my children are grown up, I'll learn to fly an airplane. I will career round the sky, knowing that if I do "go pop", there will be no little ones to suffer shock and maladjustment; that even if the worst does come to the worst, I will at least dodge the geriatric ward and all that look for your glasses in order to see where you've left your teeth. When my children are grown up, I'll have fragile lovely things on low tables; I'll have a white carpet; I'll go to the pictures in the afternoons. When the children are grown up, I'll actually be able to do a day's work in a day, instead of spread over three, and go away for a weekend without planning as if for a trip to the Moon. When I'm grown up— I mean when they're grown up—I'll be free.
Of course, I know it's got to get worse before it gets better. Twelve-year-old, I'm told, don't go to bed at seven, so you don't even get your evenings. Once they're past ten you have to start worrying about their friends instead of simply shooing the intruders off the doorstep, and to settle down to a steady ten years of criticism of everything you' ve ever thought or done or worn. Boys, it seems, may be less of a trial than girls, since they can't get pregnant and they don't borrow your clothes—if they do borrow your clothes, of course, you've got even more to worry about.
The young don't respect their parents any more, that's what. Goodness, how sad. Still, like eating snails, it might be all fight once you've got over the idea; it might let us off having to bother quite so much with them when the time comes. But one is simply not going to be able to drone away one's days, toothless by the fire, brooding on the past.
Young people often feel that the age of eighteen is the _______.
A.fight age to get married
B.gateway to happiness
C.hardest part of life
D.best time of life
第1题
如果在指令的地址码部分给出的是操作数地址的地址,这种寻址方式称为(10)。在指令执行结束时,CPU中的指令指针寄存器存放(11)。
A.直接寻址
B.间接寻址
C.相对寻址
D.变址寻址
第2题
如果在指令的地址码部分给出的是操作数地址的地址,这种寻址方式称为(10)。在指令执行结束时,CPU中的指令指针寄存器存放(11)。
A.直接寻址
B.间接寻址
C.相对寻址
D.变址寻址
第3题
若指令中,地址码给出的是操作数有效地址,这种寻址方式称为()方式。
A.基址寻址
B.立即寻址
C.直接寻址
D.间接寻址
第5题
计算机指令系统往往具有多种寻址方式。操作数就是指令的一部分称为(1)寻址,操作数地址在指令中称为(2)寻址。当操作数地址在寄存器中,就采用(3)寻址方式。假设基址寄存器的内容为2000H,变址寄存器的内容为03AOH,指令的地址码部分为3FH,当前正在执行的指令所在地址为2B00H。若采用相对寻址方式,则数据实际地址为(4)。若采用变址寻址,并考虑基址,数据的实际地址为(5)。
A.直接
B.运算器
C.立即数
D.指令
第7题
第8题
执行指令时,操作数存放在内存单元中,指令中给出操作数所在存储单元地址的寻址方式称为(23)。
A.立即寻址
B.直接寻址
C.相对寻址
D.寄存器寻址
第9题
计算机指令系统往往具有多种寻址方式。直接寻址方式指(111),立即数寻址方式指(112);寄存器寻址方式是指(113)。假设基址寄存器的内容为2000H,变址寄存器的内容为 03A0H,指令的地址码部分为2BH,当前正在执行的指令所在地址为3A00H。若采用相对寻址方式,操作数实际地址为(114)。若采用变址寻址,并考虑基址时,数据的实际地址为(115)。
A.操作数在CPU中
B.操作数地址在指令中
C.操作数地址在寄存器
D.操作数就是指令的一部分
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