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1、--..--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.71Co
2、debreakingneverlags(落后)farbehindcodemaking.Thescienceofcreatingandreadingcodedmessagesiscalledcryptography.Therearethreemaintypesofcryptography.72Forexample,thefirstlettersof“Myelephanteatstoomanyeels”Spelloutthehiddenmessage“Meetme.”73Youmightrepresenteachletterwithanu
3、mber,Forexample,Let’snumberthelettersofthealphabet,inorder,from1to26.Ifwesubstituteanumberforeachletter,themessage“Meetme”wouldread“13520135.”Acodeusessymbolstoreplacewords,phrases,orsentences.Toreadthemessageofarealcode,youmusthaveacodebook.74Forexample“bridge“mightsta
4、ndfor“meet”and“out”mightstandfor“me.”Themessage“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 th
5、an others.C.Only people who know the keyword can read the message.word可编辑.--..--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 wo
6、rds that would stand for other words.G.Another way to hide a message is to use symbols to stand 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,wh
7、eretheatmosphereofthegardenappearedtototalmorethanthesum(总和)ofitsparts?71.Butitdoesn’thappenbyaccident.Itstartswithlookinginsideyourselfandunderstandingwhoyouarewithrespecttothenaturalworldandhowyouapproachthegardeningprocess.●___72Somepeoplemaythinkthatagardenisnomoret
8、hanplants,flowers,patternsandmassesofcolor.Othersareconcernedaboutusinggardeningmethodsthatrequirelesswaterand
