假设某计算机有IMB的内存，并按字节编址，为了能存取其中的内容，其地址寄存器至少需要(9)位。为使4B组成的字能从存储器中一次读出，要求存放在存储器中的字边界对齐，一个字的地址码应(10)。若存储周期为200ns，且每个周期访问4B，则该存储器按bit存储的带宽为(11)Hz。假如程序员可用的存储空间为4MB，则程序员所用的地址为(12)，而真正访问内存的地址为(13)。

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When you open a file or run a program in a computer, a window appears on the desktop of your computer. The(67)of the window indicates which program you are currently working in arid its color will become blue if a window is active. When you click on The(68), the window disappears and appears as a button on the taskbar. Clicking on a button in(69)will invoke a specific command.

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A(66)holds enough bits to store a single character while a(67)is a group of bytes.

The HTML is the language used to create(73)for use on the WWW.

Voice-(72)technology converts human speech into a digital code that a computer can under- stand.

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