2023英语全国卷二完形填空翻译.docx

2023英语全国卷二完形填空翻译Homingpigeonsareplacedinatrainingprogramfromaboutthetimetheyaretwenty-eightdaysofage.Theyaretaughttoenterthecagethroughatrapandtoexerciseaboveandaroundtheloft(鸽棚),andgraduallytheyaretakenawayforshortdistancesinwillowbasketsandreleased.Theyarethenexpectedtofindtheirwayhomeintheshortestpossibletime.Intheirtrainingflightsorinactualraces,thebirdsaretakentoprearrangeddistantpointsandreleasedtofindtheirwaybacktotheirownlofts.Oncethebirdsareliberated,theirowners,whoarestandingbyatthehomelofts,anxiouslywatchtheskyforthereturnoftheirentries.Sincetimeisoftheessence,thespeedwithwhichthebirdscanbeinducedtoenterthelofttrapmaymakethedifferencebetweengainingawinorasecondplace.Somehomingpigeonexpertsclaimthatthisbirdisgiftedwithaformofbuilt-inradarthathelpsitfinditsownloftafterhoursofflight,forhiddenundertheheadfeathersaretwoverysensitiveears,whilethesharp,prominenteyescanseegreatdistancesindaytime.Whydohomingpigeonsflyhome?Theyarenotuniqueinthisinherentskill;itisfoundinmostmigratorybirds,inbees,ants,toads,andeventurtles,whichhavebeenknowntotravelhundredsofmilestoreturntotheirhomes.Butintheanimalworld,thehomingpigeonalonecanbetrustedwithitsfreedomandtrainedtocarryoutthemissionsthatpeopledemand.21.Thispassageismainlyabout_.A.homingpigeonsandtheirtrainingB.howtobuyahomingpigeonC.protectionofhomingpigeonsagainstthethreatofextinctionD.liberationofhomingpigeons22.Accordingtothepassage,whathappenstohomingpigeonswhentheyareaboutamonthold?A.Theyarekeptinatrap.B.Theyentertheirfirstrace.C.Theybeginatrainingprogram.D.Theygettheirwingsclippedandmarked.23.Accordingtothepassage,thedifferencebetweenahomingpigeonandanordinaryoneis_.A.thespanofthewingsB.theshapeoftheeyesC.thetextureofthefeathersD.thesizeofthebrain24.TheauthormentionsallofthefollowingattributesthatenableahomingpigeontoreturnhomeEXCEPT_.A.instinctB.airsacsC.sensitiveearsD.goodeyes25.Whydoestheauthormentionbees,ants,toads,andturtlesinthelastparagraph?