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问题 单项选择题

下面是关于Pentium微处理器内部寄存器组的叙述：
①通用寄存器都是32位，但也可以将其中的一部分作为8位或16位使用
②6个段寄存器专门用于存放段地址
③标志寄存器中的控制标志都可以用指令直接置0或置1
④EIP寄存器只用于存放当前将要执行的指令地址上面( )叙述是正确的。

A．①和②
B．②和③
C．③和④
D．④

答案

参考答案：D

填空题

根据所给词的适当形式填空。

1. Did you enjoy the movie about ______ (live) on the Mars (火星).

2. David Smith with his brother______ (hang) out their best friends during the vocation.

3. We ______ (visit) the Summer Palace last Summer holiday.

4. Can you see a boy ______ (lie) on the ground?

5. —When ______ she ______ (join) the national football team? —5 years ago.

6. He ______ (become) a professional soccer star when he was twenty-two.

7. He ______ (visit) China when he was fourteen years old.

8. The little boy could sing some difficult and beautiful ______ (piece) of music.

9. How long did you spend ______ (finish) ______ (write) this novel?

10. There ______ (be) a class meeting next Monday.
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问答题 简答题

直理电缆的方位标志应设置在哪些位置？
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