下面小编跟大家一起了解大学英语四级真题练习分享，希望对大家的学习有所帮助。

PartIWriting（30minutes）

AletterwrittenbyCharlesDarwinin1875hasbeenreturnedtotheSmithsonianInstitutionArchives(档案馆)bytheFBIafterbeingstolentwice.

"Werealizedinthemid-1970sthatitwasmissing,"saysEffieKapsalis,headoftheSmithsonianInsitutionArchives."Itwasnotedasmissingandlikelytakenbyanintern(实习生),fromwhattheFBIistellingus.Wordgotoutthatitwasmissingwhensomeoneaskedtoseetheletterforresearchpurposes,"andtheinternputtheletterback."Theinternlikelytooktheletteragainoncenobodywaswatchingit."

Decadespassed.Finally,theFBIreceivedatipthatthestolendocumentwaslocatedveryclosetoWashington,D.C.Theirartcrimeteamrecoveredtheletterbutwereunabletopresschargesbecausethetimeoflimitationshadended.TheFBIworkedcloselywiththeArchivestodeterminethattheletterwasbothauthenticanddefinitelySmithsonian'sproperty.

TheletterwaswrittenbyDarwintothankanAmericangeologist,Dr.FerdinandVandeveerHayden,forsendinghimcopiesofhisresearchintothegeologyoftheregionthatwouldbecomeYellowstoneNationalPark.

Theletterisinfairlygoodcondition,inspiteofbeingoutofthecareoftrainedmuseumstaffforsolong."Itwasluckilyingoodshape,"saysKapsalis,"andwejusthavetodosomeminorthingsinordertobeabletounfoldit.Ithassomeglueonitthathascoloreditslightly,butnothingthatwillpreventusfromusingit.Afteritisrepaired,wewilltakedigitalphotosofitandthatwillbeavailableonline.Oneofourgoalsistogetitemsofhighresearchvalueorinteresttothepubliconline."

Itwouldnowbedifficultforanintern,visitororathieftostealadocumentlikethis."Archivingpracticeshavechangedgreatlysincethe1970s,"saysKapsalis,"andwekeepourhighvaluedocumentsinasafethatIdon'tevenhaveaccessto."

51.WhathappenedtoDarwin'sletterinthe1970s?

A.ItwasrecoveredbytheFBI.

B.Itwasstolenmorethanonce.

C.Itwasputinthearchivesforresearchpurposes.

D.ItwaspurchasedbytheSmithsonianArchives.

52.WhatdidtheFBIdoaftertherecoveryoftheletter?

A.Theyproveditsauthenticity.

B.Theykeptitinaspecialsafe.

C.Theyarrestedthesuspectimmediately.

D.Theypressedcriminalchargesinvain.

53.WhatisDarwin'sletterabout?

A.TheevolutionofYellowstoneNationalPark.

B.HiscooperationwithanAmericangeologist.

C.Somegeologicalevidencesupportinghistheory.

D.Hisacknowledgementofhelpfromaprofessional.

54.WhatwilltheSmithsonianInstitutionArchivesdowiththeletteraccordingtoKapsalis?

A.Reserveitforresearchpurposesonly.

B.Turnitintoanobjectofhighinterest.

C.Keepitapermanentsecret.

D.Makeitavailableonline.

55.WhathasthepasthalfcenturywitnessedaccordingtoKapsalis?

A.Growinginterestinrareartobjects.

B.Radicalchangesinarchivingpractices.

C.Recoveryofvariousmissingdocuments.

D.Increasesinthevalueofmuseumexhibits.

PartIVTranslation(30minutes)

Directions:Forthispart,youareallowed30minutestotranslateapassagefromChineseintoEnglish.YoushouldwriteyouransweronAnswerSheet2.过去，乘飞机出行对大多数人来说是难以想象的。如今，随着经济的发展和生活水平的提高，越来越多的人包括许多农民和外出务工人员都能乘飞机出行。他们可以乘飞机到达所有大城市，还有很多城市也在筹建机场。航空服务不断改进，而且经常会有廉价机票。近年来，节假日期间选择乘飞机外出旅游的人数在不断增加。