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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.71Codebreakingneverlags(落后)farb
2、ehindcodemaking.Thescienceofcreatingandreadingcodedmessagesiscalledcryptography.Therearethreemaintypesofcryptography.72Forexample,thefirstlettersof“Myelephanteatstoomanyeels”Spelloutthehiddenmessage“Meetme.”73Youmightrepresenteachletterwithanumber,Forexample,Let’snumberthelettersofthealphabet
3、,inorder,from1to26.Ifwesubstituteanumberforeachletter,themessage“Meetme”wouldread“13520135.”Acodeusessymbolstoreplacewords,phrases,orsentences.Toreadthemessageofarealcode,youmusthaveacodebook.74Forexample“bridge“mightstandfor“meet”and“out”mightstandfor“me.”Themessage“bridgeout”wouldactuallyme
4、an“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.D.As long as there have been c
5、odes, 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 for specific letters of the alphabet.
6、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.Itstartswithlookinginsideyourselfandunderstandingwhoy
7、ouarewithrespecttothenaturalworldandhowyouapproachthegardeningprocess.●___72Somepeoplemaythinkthatagardenisnomorethanplants,flowers,patternsandmassesofcolor.Othersareconcernedaboutusinggardeningmethodsthatrequirelesswaterandfewerfertilizers(肥
