Extract（摘要）1A computer is an information processor.It is given information,called data,ins

Extract（摘要）1
A computer is an information processor.It is given information,called data,instructed to do certain things and then show us the results.The data put into the computer is called theinput and the results which come out are the output.Some people say the circle of large standing stones at Stonechenge is a kind of computer.Prehistory people worked out their calendar（日历）from the position of the shadows made by the sun shining on the stones.
Extract 2
Teach yourself new subjects and skills at your own pace with a home computer.Use it to help with schoolwork,for self-improvement,even to improve your career skills.Learn touchtyping. Foreign languages or computer programming.A home computer can help children of all ages learn classroom subjects such as spelling,geography and others.In fact it makes learning fun.So if you want to teach yourself,or help your children teach themselves-get a home computer.It can also help you manage your personal finances or help you to work taxes and plan household budgets.You can make business a pleasure with a home computer.
【小题1】The writer introduces the words such as input and output in order to . A．introduce people to computer languageB．show computer language is the same as EnglishC．help people some scientific languageD．give people some scientific language【小题2】Why does the writer talk about Stonechenge in Extract 1? A．To give an example of the very first computer. B．To show that computers are older than mankind. C．To tell the difference between the past and the present.D．To give another way of explaining computers.【小题3】If you think of the circle of large standing stones as a computer, . A．the shadow is the input and the position is the output B．the sunlight is the input and the calendar is the output C．the position is the input and the sunlight is the output D．the calendar is the input and the shadow is the output【小题4】Extract 2 is probably taken from . A．a computer textbookB．a company's advertisementC．a teach-yourself computer book D．a children's guide to computersA

(答案→)A 解析：文章第一部分介绍了一些电脑方面的知识，第二部分是一则广告，宣传电脑的好处，让人们去购买电脑。【小题1】A 细节题。根据第一段2,3行The data put into the computer is called theinput and the results which come out are the output.中的这些input，output都是电脑语言，故这样做是把这些电脑语言介绍介绍给大家。故A正确。【小题2】D 推理题。根据第一段3,4行Some people say the circle of large standing stones at Stonechenge is a kind of computer是用巨石阵来解释电脑究竟是什么。故D正确。【小题3】B 推理题。根据第一段最后Prehistory people worked out their calendar（日历）from the position of the shadows made by the sun shining on the stones.在巨石阵中，照射的阳光就如同信息输入，人们根据阳光下的阴影算出的日历就是output也就输出。故B正确。【小题4】B 推理题。通读第二部分都是在介绍电脑的好处，如So if you want to teach yourself,or help your children teach themselves-get a home computer.最终的目的是让人购买电脑，故这是一则广告，B正确。

哦，回答的不错