20xx托福考試模擬預(yù)測題「」

20xx托福考試模擬預(yù)料題「最新」20xx托?？荚嚹M預(yù)料題「最新」導(dǎo)語：下面是為大家搜尋整理的關(guān)于托?？荚囎钚履M預(yù)料題，歡迎參考學(xué)習(xí)，希望對大家有所幫助!InJulyof1994,anastoundingseriesofeventstookplace.Theworldanxiouslywatchedas,everyfewhours,ahurtlingchunkofcom#etplungedintotheatmosphereofJupiter.Allofthetwenty-oddfragments,collectivelycalledcom#etShoemaker-Levy9afteritsdiscoverers,wereoncepartofthesameobject,nowdismemberedandstrungoutalongthesameorbit.Thiscom#etarytrain,glisteninglikeastringofpearls,hadbeenfirstglimpsedonlyafewmonthsbeforeitsfatefulimpactwithJupiter,andratherquicklyscientistshadpredictedthatthefragmentswereonacollisioncoursewiththegiantplanet.TheimpactcausedanexplosionclearlyvisiblefromEarth,abrightflamingfirethatquicklyexpandedaseachicymassincinerateditself.Wheneachfragmentslammedat60kilometerspersecondintothedenseatmosphere,itsimmensekineticenergywastransformedintoheat,producingasuperheatedfireballthatwasejectedbackthroughthetunnelthefragmenthadmadeafewsecondsearlier.TheresiduesfromtheseexplosionslefthugeblackmarksonthefaceofJupiter,someofwhichhavestretchedouttoformdarkribbons.Althoughthisimpacteventwasofconsiderablescientificimport,itespeciallypiquedpubliccuriosityandinterest.PhotographsofeachcollisionmadetheeveningtelevisionnewscastandwerepostedontheInternet.Thiswaspossiblythemostopenscientificendeavorinhistory.Thefaceofthelargestplanetinthesolarsystemwaschangedbeforeourveryeyes.Andfortheveryfirsttime,mostofhumanitycametofullyappreciatethefactthatweourselvesliveonasimilartarget,aworldsubjecttocatastrophebyrandomassaultsfromcelestialbodies.Thatrealizationwasasurprisetomany,butitshouldnothavebeen.Oneofthegreattruthsrevealedbythelastfewdecadesofplanetaryexplorationisthatcollisionsbetweenbodiesofallsizesarerelativelycommonplace,atleastingeologicterms,andwereevenmorefrequentintheearlysolarsystem.Thepassagementionswhichofthefollowingwithrespecttothefragmentsofcom#etShoemaker-Levy9?Theywereoncecom#bineinalargerbody.SomeofthemburnedupbeforeenteringtheatmosphereofJupiter.SomeofthemarestillorbitingJupiter.Theyhaveanunusualorbit.Thewordcollectivelyinline3isclosestinmeaningtorespectivelypopularlyalso(D)togetherTheauthorcom#paresthefragmentsofcom#etShoemaker-Levy9toallofthefollowingEXCEPTadismemberedbodyatrainapearlnecklaceagiantplanetBeforecom#etShoemaker-Levy9hitJupiterinJuly1994,scientistshadbeenunawareofitsexistencehadbeentrackingitforonlyafewmonthshadobserveditsbreakupintotwenty-oddfragmentshaddecideditwouldnotcollidewiththeplanetBeforethecom#etfragmentsenteredtheatmosphereofJupiter,theyweremostlikelyinvisibleblackfrozenexplodingSuperheatedfireballswereproducedassoonasthefragmentsofcom#etShoemaker-Levy9hitthesurfaceofJupiterwerepulledintoJupitersorbitwereejectedbackthroughthetunnelenteredtheatmosphereofJupiterThephraseincinerateditselfinline9isclosestinmeaningtoburnedupbrokeintosmallerpiecesincreaseditsspeedgrewinsizeWhichofthefollowingismentionedasevidenceoftheexplosionsthatisstillvisibleonJupiter?fireballs⑻ice⑻icemassesblackmarkstunnelsParagraph2discussestheimpactofthecom#etShoemaker-Levy9primarilyintermsofitsimportanceasaneventofgreatscientificsignificanceitseffectonpublicawarenessofthepossibilityofdamage