1、Unit 3 Computers 同步练习(八)完型填空 Computers have done us a lot since they turned upIn the future they will play a more important part in many _1_，such as education，transport，personal lives，scientific research and _2_ Nowadays computer are being _3_in agriculture and industry _4_can help the farmers to _5
2、_ the conditions of the plantsMore and more computers Will come into our daily life with the _6_ of science and technology . It you want to change money or pay your electricity bills，you wont have to go to the _7_A computer and a telephone will help youIt can also help you to do the housework and it
3、 can even _8_ human voices and carry out the instructionsIt is _9_ _10_ the majority of the labor force will work at homePeople will be able to use the videophone _11_ conferencesThis can help us to save a lot of energy and _12_It is said that trains in Japan will have _14_ ，because they1l be well _
4、14_by computers，which can also tell the best _15_ between trainsComputer programmes for _16_ whole texts are already we11 developedYou can _17_ the name of a certain subject and a _18_ list of book titles will _19_ on your screenYou may choose _20_ you want1Afamilies Bfields Cfactories Dplaces2Aso o
5、n Bso forth Cso on and so forth DA or B or C3Aused Bput Cshown Dgiven4Awhich Bthat Cand Dso5Aform Bgrow Ccontrol Dmanage6Aincrease Bprogress Cproduction D development7Aoffice Bbank Cshop Dpost office8Aunderstand Bcarry out Chear D recognize9Aimportant Bnecessary Cpossible Dcomplete10Awhen Bwhy Cwhic
6、h Dthat11Aat Bfor Cwith Din12Amaterial Btime Cplace Dmoney13Adriver Bsome drivers Cfewer drivers Dno drivers14Aoperated Bdone Cmade Drun15Aposition Bdirection Cdistance D Way16Astoring Bwriting Cremaining Drecording17Agive Bput Ctype Dwrite18Afirstrate Bworldfamous C Dworldwide19. A.show B. appear C
7、. offer Dcome up20Awhatever Bwhat Cwhichever Dwhich阅读理解AHow to apply for(申请)a free mailbox? First you have to connect to the Internet and go to the homepage(主页 )of the ICP providing free mailboxesThen you will find an icon showing “apply for a free mailbox”Click the icon，an agreement about the rules
8、 for using the free mailbox will appearIf you want to go，click the icon“ I agree“Then you have to fill in a form about your basic personal data，and the name and PIN of the mailboxThe PIN is the key to the mailboxAfter finishing these, you will get a mailbox like this：your namemail sever for example：
9、tvguidemail：cctvcom cn“tvguide“ is the, name of the mailbox，and“ mailcctvcorncn“ is the name of the mail server)The mailbox is separated(分隔)into two parts by a separator“，which is read as“at“The former part is the name of the mailboxThe latter is the domain name(域名)of the mailsserverAn mails to you
10、will be received by the server and put into your mailbox You can read these mails on any computer on the Internet in the world，if you have the name and PIN of the mailbox21If you want to send or receive an e mail，you should first_Abuy a computer Bfill in a formCapply for a mailbox Dgo to the post of
11、fice22When you get a FREE mailbox you can send an email_.Aat anytime Bwithout paying any moneyCat anywhere Dto anyoneBComputers have many uses todayComputers can solve(解答)difficult problems and control complex machinesMany people use small computers called calculators(计算器)to solve simple arithmetic
12、problems quicklyScientists use large computers to Solve many problems at the same time You can play games on computers，and some computers can help you learn languagesThe Kurzweil Reading Machine is a special kind of computerIt can read books for blind peopleT0 use the Kurzweil machine，a blind person
13、 simply opens the book and puts it face down on the scanner(扫描器 )The machine 66 reads，the words on the pageWhen one page is finished，the blind person turns the page and puts the book on the scanner againThe Kurzweil machine can read in a normal voice or in a special fast voiceIt can read words with
14、small letters，large letters，or italics(斜垂墨)Blind people like the Kurzweil machine because they can“readanything with it：newspapers, magazines，books ，even typed lettersMany libraries now have Kurzweil machines for blind people to useThe Kurzweil machines can also help shortsighted children to learn 2
15、3What is the main idea of the first paragraph?AExplaining Various uses of computersBExplaining the uses of calculatorsCExplaining what computer languages are DExplaining what the Kurzweil Reading Machine is 24How does the Kurzwe machine read?AIn a normal voice B1n a low voice CIn a fast voiceDEither
16、 in a normal voice or in a fast Voice25Why do blind people like the Kurzweil machine?AIt can help them learn languagesBIt can help them read books，newspapers，magazines，etcCIt can read in a normal voice DIt can read words with small letters，large letters or italics 26What does the second paragraph te
17、n us?AThe way computers workBHow to use a Kurzweil machineCHow to use the scannerDThat the Kurzwe machine can read in two voicesCUntil recently the chances for criminal activity(犯罪活动)on the internet have been lowHow ever，business done on the internet is growing rapidly，as people order books and othe
18、r products all make money transactions(交易)A11 this is a strong temptation(诱惑)for hackersHackers are of ten young people who are deeply attracted by computersThey use them to prow the internet，looking for ways to break into computer systems(系统)run by banks，telephone companies and even government depa
19、rtmentsThey look for examples of credit cards(信用卡)and try to steal the numbersRecently in America，hackers have been caught testing the security(安全)system at the Pentagon，headquarter(总部)of the American Defence DepartmentBut sting the backers insist often for a dare“because its therealthough with what
20、 success nobody really knows Hackers seldom admit to(享有)a successful breakinThe first sign of a security breach(泄密)may be when a customer discovers fraudulent(欺骗)money transaction on a credit card account(账户)，and it is hard to discover it“You just dont give your credit card out to anybody， says, Mic
21、hael White，multimedia produce manager for clear communications， “and in the same way you should regularly change your credit card entering number，you can defeat hackers by regularly changing your Internet password(密码)If you dont ，its like leaving the bank vault(金库)door wide openThe warning against h
22、ackers is out there，and the answer is obviously to choose tricky passwords and change them frequently and to watch who you pass your credit card details to27We can learn from the text that hackers _.Aare computer fans and play tricks on people on the internetBsteal only credit cards on the internetC
23、are mostly young computer fansDregularly attack the computer systems28 “Prowlused in the second paragraph means_Amove quietly B. destroyCget information Drebuild29Hackers seldom admit to a successful breakin because_Athey are not easily caught by policemen Bthey regularly change their internet passw
24、ordCits hard for them to get the information of the credit card accountDthey cant easily get the customers internet passwords30Which of the following gives us the implication(暗示)ofbecause it s there“?AWhat the hackers do really exists on the InternetBThe hackers are not afraid of being caughtCThe ha
25、ckers succeed in prowling the internetDWhat the hackers do really surprises Michael WhiteKey:I1B fields 在此处意为“领域 。2 D and so on=and so forth=and so on and so forth3A are being used 意为“在被用 。4C and 连接两个并列谓语。5C help sb(to) Do (sth)意为“帮助某人做某事“；control the conditions of the plants 意为“控制植物的生长状况 。6D with t
26、he development of 意为“随着的发展 。7B“换钱交电费 就要去银行。8D recognize 在此处意为“认出，辨认“。9C It is possible that 意为“可能” 。1 OD 同上。11B use sthfor sth意为“用做 。1 2B 根据常识可以找出答案。1 3D have no drivers 意为“没有司机” 。14。A operated 此处意为“操纵，控制 。1 5C the best distance between trains 意为“火车之问的最佳距离 。16A store 在这里是“存储“ 之意。17C type 在这里指往电脑里输入信
27、息。18D a worldwide list of book titles 表示“一份世界范围内的书名单” 。19B appear on screen 意为出现在你电脑屏幕上“。20C whichever 在此处指书单上的任何一种书。21C 细节题。想接收 e-mail，要先申请邮箱。2 2B 词义猜测题。a FREE mailbox 意为“免费邮箱” 。23A 主旨概括题。第一段主要说明计算机有多种用途。24D 细节理解题。据第二段，说这种计算机先用扫描仪扫描，然后用正常的或快速的声音读出来。2 5B 细节理解题。 有了这种电脑，盲人可以读若干东西了。26B 主旨概括题。第二段说明怎样用扫描
28、仪。2 7C 细节题。从第二段首句 Hackers areoften young people who are deeply attractedby computers得此答案。28A 从 They look for examples of creditcards and try to steal the numbers我们得知，这些“黑客 并非想毁掉或重建计算机， ；因此 B、D 不合题意。在此 C 有较大干扰性，在此分析 looking for ways to break intocomputer systems run by banks 在句中的作用对选择答案极有影响，在此分词短语做伴随状语，修饰 prowl，因此我们可以推断prowl 在这里的意思是“ 进入” 。2 9D 从后文 you can defeat hackers byregularly changing your Internet password，我们可以推断， “黑客“是靠破译因特网上的密码进入的，然而是不容易破译的，因此D 为最佳答案。30A Its there 在这里表示 “存在“。
