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1、WORD格式整理版历年高考试题分项解析之专题七选五1【2016·全国新课标I】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。Secretcodes(密码)keepmessagesprivate。Banks,companies,andgovernmentagenciesusesecretcodesindoingbusiness,especiallywheninformationissentbycomputer.Peoplehaveusedsecretcodesforthousandsofyears.71Codebreakingneve
2、rlags(落后)farbehindcodemaking.Thescienceofcreatingandreadingcodedmessagesiscalledcryptography.Therearethreemaintypesofcryptography.72Forexample,thefirstlettersof“Myelephanteatstoomanyeels”Spelloutthehiddenmessage“Meetme.”73Youmightrepresenteachletterwithanumber,Forexample,Let’snumberthel
3、ettersofthealphabet,inorder,from1to26.Ifwesubstituteanumberforeachletter,themessage“Meetme”wouldread“13520135.”Acodeusessymbolstoreplacewords,phrases,orsentences.Toreadthemessageofarealcode,youmusthaveacodebook.74Forexample“bridge“mightstandfor“meet”and“out”mightstandfor“me.”Themessage“
4、bridgeout”wouldactuallymean“Meetme.”75However,itisalsohardtokeepacodebooksecretforlong.Socodesmustbechangedfrequently.A.It is very hard to break a code without the code book.B.In any language, some letters are used more than others.C.Only people who know the keyword can read the message
5、.D.As long as there have been codes, people have tried to break them.E.You can hide a message by having the first letters of each word spell it out.F.With a code book, you might write down words that would stand for other words.G.Another way to hide a message is to use symbols to stand
6、for specific letters of the alphabet.2【2016·全国新课标II】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Agardenthat’sjustrightforyouHaveyouevervisitedagardenthatseemedjustrightforyou,wheretheatmosphereofthegardenappearedtototalmorethanthesum(总和)ofitsparts?71.Butitdoesn’thappenbyaccident.Itstartswi
7、thlookinginsideyourselfandunderstandingwhoyouarewithrespecttothenaturalworldandhowyouapproachthegardeningprocess.●___72学习好帮手WORD格式整理版Somepeoplemaythinkthatagardenisnomorethanplants,flowers,patternsandmassesofcolor.Othersareconcernedaboutusinggardeningmethodsthatrequirelesswater