高中英语《Unit 3 Computers》Using Language课时作业 新人教版必修2.doc

unit 3 computersusing language.单词拼写1he gave a _(信号)to the driver to carry on.2his father is a baseball _(教练)3my father bought an _(电子的)dictionary for me.4generosity is part of the american _(性格，特征)5this is a new _(类型)of machine，with lots of meters on it.6could you teach me how to _(下载)music from the internet?7his first _(出现)on stage was at the age of three.8have you _(拖)the floor?9the little boy was so _(调皮的)that his teacher didnt know what to do with him.10let me know if any difficulties _(出现).阅读理解ashopping online in search of a bargain(便宜货)can often leave you feeling disappointed or out of pocket rather than satisfied. you can avoid this by following our simple advice：productbefore you look for the cheapest price you need to decide what product you actually want. you can do this by researching online，the easiest way is to google for different products so that you can decide on what would be best for you.search & compare you are now ready to use a comparison website to try and find out the best prices. you should never just use one comparison website，using two or more will give you a balanced view of the market. comparison websites are necessary.you need to first check out what kind of technology a site uses. although the idea behind froogle(now called google products)is attractive，the technology it uses is not as advanced as sites such as kelkoo and pricerunner. froogle uses a regular search engine.and dont expect price comparison sites to be a surefire way of getting a bargain. the sites will only show products from companies who pay them. this is not necessarily a bad thingsuppliers value their reputation(名声)and their business relationships.and search againbefore you buy you should search the product using a price comparison service，then try again just using a standard search engineit might find the product with a cheaper price.if you use firefox to surf the web then theres an addon (附加的)tool that you can download which finds the cheapest price for a product for you.it is called the invisible hand and it is free to download. for example，if youre shopping online at amazon，the invisible hand will pop up and tell you that it is 56 cheaper at dixons.the tool will only work when you are looking at products，so it shouldnt disturb your day to day internet surfing. the addon is supported by wellknown brands(品牌)such as bt，comet and hmv but obviously it wont search every single site out there，so it is still best to use a comparison site in addition to the tool.1according to the passage，how to decide what product to buy?aby shopping online.bby searching online.cby looking for the cheapest price.dby deciding which is best.2we can learn from the passage that _awe dont need to use two or more comparison websitesbcomparison websites often give us wrong views and choicescall the search engines are the same advancedddifferent comparison websites use different technologies3how many tips does the author give in the passage?a1.b2.c3.d4.4whats the exact meaning of the underlined phrase “pop up” in paragraph 8？its _ashoutbappearcdisappeardhide5whats the best title of the passage?ahow to find perfect bargains onlinebhow to use search enginescdifferent websites in the worlddonline shoppings advantagebthe computer is a useful machine. it is the most important invention in many years. the oldest kind of computer is the abacus(算盘), used in china centuries ago, but the first large, modern computer was built in 1946.a computer then could do maths problems quite fast.today computers are used in many ways and can do many kinds of work. in a few years the computer may touch the life of everyone, even people in faraway villages.in the last few years, there have been great changes in computers. they are getting smaller and smaller, and computing faster and faster, many scientists agree that computers can now do many things, but they cannot do everything. who knows what the computers of tomorrow will be like? will computers bring good things or bad things to people? the scientists of today will have to decide how to use the computers of tomorrow.6the computer is a _ machine.ahelpfulbstrangeclargeddangerous7the first large, modern computer was built about _ years ago.aa fewbfortycseventydeighty8the computers of today are _ than before.abiggerbfewercsmallerdtaller9computers can do _aeverythingbanythingcnothingdlots of things10the scientists of today _ how to use the computers of tomorrow. amay decidebmust decideccan makedneednt make.翻译句子1昨晚一定下雨了，因为地是湿的。(for)_2我看喜剧片时觉得十分轻松。(while)_3在他的同伴的帮助下，他的事业成功了。(help)_4警察示意车辆停下来等一等。(signal)_5他们之间的争吵起因于他的粗鲁。(arise)_参考答案.1.signal2.coach3.electronic4.character5.type6.download7.appearance8.mopped 9naughty10.arise.1.b细节理解题。由第二段可知“想要决定自己真正想买的东西最容易的方式就是通过google等搜索引擎在线搜索不同的物品，以便作出最佳的选择”。2d细节理解题。由第三、四段可知a项错在dont need；b项错在wrong；c项错在the same；尤其是第四段通过例证说明不同的“比较网站”使用的是不同的搜索引擎技术。3c数字计算题。由文中黑体的内容来看，作者一共提出了三大建议，分别是“product”，“search and compare”，以及“and search again”共三条。4b词义猜测题。根据上下文语境可知，“如果你在亚马逊网购物时，the invisible hand 就将会自动出现并告诉你这个物品在dixons网卖得便宜56英镑”。句意决定了这个短语应该表示这个the invisible hand 会自动出现来提示并提供帮助。5a主旨大意题。由第一段开篇点题和综览全文内容及其结构后可知，本文主要提出了几种建议，以便让读者学会更好地在网上淘到廉价货。故a项最全面最准确。6a细节理解题。根据据第1句话 the computer is a useful machine 可知答案为a。7c推理判断题。第一台计算机是1946年生产的，距今大约70年，所以应选c。8c细节理解题。根据第3段第2句 they are getting smaller and smaller 可知答案为 c。9d推理判断题。根据第2段第1句 today computers are used in many ways and can do many kinds of work 以及.but they cannot do everything可知答案为d。10b细节理解题。根据最后一句话 the scientists of today will have to decide how to use the computers of tomorrow