资源描述：
《考研英语二10-14年真题阅读新题型》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、2010年英语二Reading-PartBDirections:Readthefollowingtextanddecidewhethereachofthestatementsistrueorfalse.ChooseTifthestatementistrueorFitthestatementisnottrue.MarkyouranswersonANSWERSHEET1.(10points)CopyingBirdsMaySaveAircraftFuelBothBoeingandAirbushavetrumpetedth
2、eefficiencyoftheirnewestaircraft,the787and350respectively.Theircleverdesignsandlightweightcompositescertainlymakeadifference.ButagroupofresearchersatStanfordUniversity,ledbyIlanKroo,hassuggestedthatairlinescouldtakeamorenaturalisticapproachtocuttingjet-fueluse
3、anditwouldnotrequirethemtobuynewaircraft.Theanswer,saysDrKroo,lieswithbirds.Since1914,scientistshaveknownthatbirdsflyinginformation-aV-shape-expendlessenergy.Theairflowingoverabird5swingscurlsupwardsbehindthewingtips,aphenomenonknownasupwash.Otherbirdsflyingin
4、theupwashexperiencereduceddrag,andspendslessenergypropellingthemselves.PeterLissaman,anaeronauticsexpertwhowasformerlyatCaltechandtheUniversityofSouthernCalifornia,hassuggestedthataformationof25birdsmightenjoyarangeincreaseof71%.Whenappliedtoaircraft,theprinci
5、plesarenotsubstantiallydifferent.DrKrooandhisteammodeledwhatwouldhappenifthreepassengerjetsdepartingfromLosAngeles,SanFranciscoandIasVegasweretoassembleoverUtah,assumeaninvertedV-formationoccasionallychangeplacessoallcouldhaveaturninthemostfavorablepositions,a
6、ndproceedtoLondon.Theyfoundthattheaircraftconsumedasmuchas15%lessfuel(coupledwithareductionincarbon-dioxideoutput).Nitrogen-oxideemissionsduringthecruisingportionsoftheflightfellbyaroundaquarter.Thereare,ofcourse,knotstobeworkedout.Oneconsiderationissafety,ora
7、tleasttheperceptionofit.Wouldpassengersfeelcomfortabletravellingincompanion?DrKroopointsoutthattheaircraftcouldbeseparatedbyseveralnauticalmiles,andwouldnotbeintheintimategroupingsfavoredbydisplayteamsliketheRedArrows,Apassengerpeeringoutofthewindowmightnoteve
8、nseetheotherplanes.Whethertheseparationdistancesinvolvedwouldsatisfyair-traffic-controlregulationsisanothermatter,althoughaworkinggroupattheInternationalCivilAviationOrganizationha
