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1、全国卷12017年IfanyonehadtoldmethreeyearsagothatIwouldbespendingmostofmyweekendscamping,Iwouldhavelaughedheartily.Campers,inmyeyes,werepeoplewhoenjoyedinsectbites,ill-cookedmeals,anduncomfortablesleepingbags.Theyhadnothingincommonwithme.36Thefriendswhointroducedmetocampingthoughtthatitmeanttobeapioneer.
2、37Wesleptinatent,cookedoveranopenfire,andwalkedalongdistancetotaketheshowerandusethebathroom.ThisbriefvisitwithMotherNaturecostmetwodaysofffromwork,recoveringfromabadcaseofsunburnandthedoctor’sbillformyson’sfoodpoisoning.Iwas,nevertheless,talkedintogoingonanotherfun-filledholidayinthewilderness.38I
3、nstead,wehadapop-upcamperwithcomfortablebedsandanairconditioner.Mynature-lovingfriendshadrememberedtobringallthenecessitiesoflife.39Wehavedonealotofitsince.Recently,weboughtatwenty-eight-foottraveltrailercompletewithabathroomandabuilt-inTVset.Thereisaseparatebedroom,amodernkitchenwitharefrigerator.
4、Thetrailerevenhasmatchingcarpetandcurtains.40Itmustbetruethatsoonerorlater,everyonefindshisorherwaybacktonature.Irecommendthatyoufindyourwayinstyle.A.This time there was no tent.B.Things are going to be improved.C.The trip they took me on was a rough one.D.I was to learn a lot about camping since t
5、hen, however.E.I must say that I have certainly come to enjoy camping.F.Afterthetrip,myfamilybecamequiteinterestedincamping.G.Therewasnoshadeastreeswerenomorethan3feettall.DCAFE2016年Secretcodes(密码)keepmessagesprivate。Banks,companies,andgovernmentagenciesusesecretcodesindoingbusiness,especiallywheni
6、nformationissentbycomputer.Peoplehaveusedsecretcodesforthousandsofyears.36Codebreakingneverlags(落后)far7behindcodemaking.Thescienceofcreatingandreadingcodedmessagesiscalledcryptography.Therearethreemaintypesofcryptography.37Forexample,thefirstlettersof“Myelephanteatstoomanyeels”Spelloutthehiddenmess
7、age“Meetme.38Youmightrepresenteachletterwithanumber,Forexample,Let’snumberthelettersofthealphabet,inorder,from1to26.Ifwesubstituteanumberforeachletter,themessage“Meetme”wouldread“13520135.”Acodeusessymbolst
