计算机的主存储器(内存)用来存储数据和指令,为了实现按地址访问,每个存储单元必须有一个惟一的地址。PC机主存储器的编址最小单位是________。
参考答案:字节
下列说法中正确的是( )
A.矩形的对角线互相垂直
B.菱形的对角线相等
C.正方形的对角线相等且互相平分
D.等腰梯形的对角线互相平分
情景对话。
A: Hi I am Wang Hong. I am a journalist from Taiyuan TV Station. I want to know something about
your school life. Could you 1______ about it?
B: Yes, I'd love to.
A: Well, 2______
B: About two thousand students in our school.
A: And are you always busy with your lessons?
B: 3______ We have much homework to do every day. We have to work hard.
A: What about your free time?
B: We can take part in different kinds of activities. 4______ in our school. And these hobby groups
are open to us on Friday afternoons.
A: I think your school is wonderful, isn't it?
B: I think so.
A: It's nice talking to you. 5______
B: You're welcome.