英语六级考试选词填空专项练习题.docx

英语六级考试选词填空专项练习题

在平平淡淡的日常中，我们都可能会接触到练习题，通过这些形形色色的习题，使得我们得以有机会认识事物的方方面面，认识概括化图式多样化的具体变式，从而使我们对原理和规律的认识更加的深入。一份好的习题都具备什么特点呢？以下是小编整理的英语六级考试选词填空专项练习题，仅供参考，欢迎大家阅读。英语六级考试选词填空专项练习题1Directions:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Anovelwayofmakingcomputermemories,usingbacteriaFORhalfacentury,the(1)__________ofprogressinthecomputerindustryhasbeentodomorewithless.Mooreslawfamouslyobservesthatthenumberoftransistorswhichcanbecrammedintoagivenspace(2)__________every18months.Theamountofdatathatcanbestoredhasgrownatasimilarrate.Yetas(3)__________getsmaller,makingthemgetsharderandmoreexpensive.OnMay10thPaulOtellini,thebossofIntel,abigAmericanchipmaker,putthepriceofanewchipfactoryataround$10billion.HappilyforthosethatlackIntelsresources,theremaybeacheaperoption—namelytomimicMotherNature,whohasbeenbuildingtiny(4)__________,intheformoflivingcellsandtheircomponents,forbillionsofyears,andhasthusgotrathergoodatit.ApaperpublishedinSmall,ananotechnologyjournal,setsoutthelatestexampleofthe(5)__________.Init,agroupofresearchersledbySarahStanilandattheUniversityofLeeds,inBritain,describeusingnaturallyoccurringproteinstomakearraysoftinymagnets,similartothoseemployedtostoreinformationindiskdrives.Theresearcherstooktheir(6)__________fromMagnetospirillummagneticum,abacteriumthatissensitivetotheEarthsmagneticfieldthankstothepresencewithinitscellsofflecksofmagnetite,aformofironoxide.Previousworkhasisolatedtheproteinthatmakestheseminiaturecompasses.Usinggeneticengineering,theteammanagedtopersuadeadifferentbacterium—Escherichiacoli,aubiquitouscritterthatisaworkhorseofbiotechnology—to(7)__________thisproteininbulk.Next,theyimprintedablockofgoldwithamicroscopicchessboardpatter