第一章：计算机基础知识
CPU（Central processing Unit）中央处理器：主要用于数据的计算和控制
Pentium 奔腾
MMX（Multimedia Extension）多媒体扩展
CPU Clock Speed 时钟频率
Expansion-Bus speed 扩展总线速度
FPU （Float Point Unit）浮点运算单元
Pipeline 流水线
Super pipeline 超流水线
Superscalar 超标量
SSE是英语“因特网数据流单指令序列扩展”（Internet Streaming SIMD Extensions）的缩写
Memory 存储器
Main memory 主存储器。分为Read only memory和Random Access memory
Auxiliary memory 辅助存储器
ROM 只读存储器
RAM 随机存取存储器
EDO RAM（Extended Data Out）既扩展数据输出内存
SDRAM（Synchronous Dynamic）同步动态内存
DDR SDRAM（Double Data Rage）双倍数据速率内存
DR DRAM（Direct Rambus）接口动态随机存储器
内存条的接口类型：
1.SIMM接口内存条是Single In-line Memory Module的简写。
2.DIMM接口内存条是Dual In-line Memory Module的简写。
3.RIMM接口内存条是Rambus In-line Memory Module的简写。Power 电源，现在的计算机多用ATX电源，ATX电源支持远程开机、关机，以及自动开关机等功能。
Main board，Mother board，System board 主板是安装在主机机箱内的一块矩形电路板，上面有控制芯片组、BIOS芯片、各种输入输出接口、键盘和面板控制开关接口、指示灯插接件、扩充插槽及直流电源供电接插件等元件。
BIOS“Bassic Input/output system”意思是“基本输入/输出系统”Display Card；Video Card 显示卡适配器简称显卡，是连接主板与显示器的接口卡。它的作用是将主机的输出信息转换成字符、图形等信息并传送到显示器上显示。
Sound Card；Audio Controller 声卡，是计算机用来处理声音信息的接口卡
Hard Disk Driver，简称HDD，也叫硬盘。主要用于存放计算机操作系统、各种应用软件和数据文件，其存储容量是目前所有存储器中最大的。
光盘驱动器简称光驱，目前主要有两种。一种是Compact Disk Driver （紧密盘驱动器，简称CD Driver），它所使用的存储介质为普通CD；
另外一种是Digital Video Disk Driver（数字视频盘驱动器，简称DVD Driver），它所使用的存储介质为DVD。
Floppy Disk Driver，软盘驱动器简称FDD，用于读取软盘上的信息。Modem，调制调解器，是个人计算机上网的常用设备。
Keyboard 键盘
Mouse 鼠标
Monitor 显示器（有阴极射线管显示器CRT和液晶显示器LCD）
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中考英语阅读理解模拟试题.附
详解03
Several years ago， a television reporter was talking to three of the most important people in America. One was a very rich banker， another owned one of the largest companies in the world， and the third owned many buildings in the center of New York.
The reporter was talking to them about being important.
“How do we know if someone is really important？” the reporter asked the banker. The banker thought for a few moments and then said，“I think anybody who is invited to the Whiter House to meet the President of the United States is really important.”
The reporter then turned to the owner of the very large company. “Do you agree with that？” she asked.
The man shook his head，“No. I think the President invites a lot of people to the White House. You‘d only be important if while you were visiting the President，there was a telephone call from the president of another country， and the President of the US said he was too busy to answer it.”
The reporter turned to the third man. “Do you think so？”
“No， I don‘t，” he said. “I don’t think that makes the visitor important. That makes the President important.”
“Then what would make the visitor important？” the reporter and the other two men asked.
“Oh， I think if the visitor to the White House was talking to the President and the phone rang， and the President picked up the receiver， listened and then said，‘It’s for you.‘”
根据以上短文内容，然后从每题所给的四个选项中选择最佳选项。
