6月大学英语四级考试试题PartWriting(30minute）Directions：Forthispart,youareallowed30minutetowriteashortessayonthetopicofstudentsselectingtheirlectures。Youshouldwriteatleast120wordsfollowingtheoutline：whenbellow1。有些大学容许学生自由选择某些课程旳任课教师2.学生选择教师时所考虑旳重要因素3。学生自选任课教师旳益处和也许产生旳问题PartIIReadingcomprehension(skimmingandscanning（15)minute)HighwayAgovernmentstudyrecommendedanationalhighwaysystemof33,920，andmilescongresspassedtheFederal-AidHighwayActof1944，whichcalledforstrict，centriccontrolleddesert。criteriaTheinterstatehighwaysystemwasfinallylaunchedin1956andhasbeenhailedasoneofthegreatestpublicworksprojectsofthecentury.Tobuildits44,000—milewebofhighways，bridgeandtunnels，hundredsofuniqueengineeringdesignsandsolutionshadtobeworkedout.Considerthemanygeographic,featuresofthecountry：mountains，steepgrades,wetlands，rivers，desertsandplains.Variablesincludedtheslopeoftheland,theabilityofthepavementtosupportthe。loadInnovative，designsofroadways,tunnels，bridges,overpasses,andinterchangesthatcouldrunthroughorbypassurbanareassoonbegantoweavetheirwayacrossthecountry,foreveralteringthefaceofAmerican.Long—span，segmented-concrete,cable-stayedbridgessuchasHaleBoggsinLouisianaandtheSunshineSkywayinFlorida,andremarkabletunnelslikeFortMchenryinMarylandandMr.bakerinWashingtondevelopedunderthenation'sphysicalchallenges,Trafficcontrolsystemsandmethodsofconstructiondevelopedundertheinterstateprogramsooninfluencedhighwayconstructionaroundtheworld,andwereinvaluableinimprovingtheconditionofurbanstreetsandtrafficpatterns。Todaytheinterstatesystemlinkseverymajorcity。S,inandthetheUU.SwithCanadaandMexico。Builtwithsafetyinmindthehighwayshavewidelanesand，shouldersdividingmedians,orbarriers，longentryandexitlanes,ourengineeredforsafe，turnsandlimitedaccess.Thedeathrateonhighwaysishalfthat。ofSroadsallother(0.86Udeathsper100millionpassengermilescomparedto1.99deathsper100milliononallotherroads)ByopeningtheNorthAmericancontinent,highwayshaveenabledconsumergoodsandservicestoreach