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? ?阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子作出判断。如果该句提供的是正确信息，请选择A项；如果该句提供的错误信息，请选择B项；如果该句的信息文章中没有提及，请选择C项...
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{{*HTML*}}{{B}}第二篇{{/B}} {{B}}??????? ??????????? ??????TVGoesDigital{{/B}}? ?ComingsoontoyourTV:viewsofthehottestlivebasketballplaysfrom anyseatinthestadium.Whatabetterlookatthatthree-pointshot?Callfora replayfrombehindthebasket.Orbetteryetfollowtheviewoftheballas itgoesthroughthenet.??Whilewatchingyoumightusea built-inspeakerphonetotalkwithafaninthestands.Orsendthescorevia e-mailtoyourfatherinJapan.Soundsimpossible?Itwon’tbewhenthe computerizedtelevisionindustriescombinetocreatedigitalTV-machinesthat receivesendstoreandmanipulateTVprogramsthewaycomputersnow manipulateotherdata.??Industryandgovernmentrepresentatives recentlyreachedanagreementonhowthistechnologywilltakeplace.New digitalTVsthatallowcurrentTVstoreceivedigitalsignalsmayhitstoresby nextspring.??Tounderstandhowthedigitalrevolutionwill changethewayyouwatchTVithelpstoknowhowTVsworknow.TodayTV networkssuchasCBSandFoxbroadcastTVshowsasanalogueelectricalsignals. Thesesignalstravelviatheairwavessatellitesorcableasacontinuous streamofelectromagneticenergylikelightandradiowaves.Butthissystem leavesalotofroomforerror.Themainproblemisthatinterferencecanchange thevoltageofthesignalasittravels.Thismayresultinadistortedor miscoloredpicture.Ifwesendoutthesignalinaformthatisnearlyfreefrom interference-binary两位数的codepicturesandcolorsarenotdistorted.? ?You’llneedtobuyanewTVtoreceivethesesignals.Andthenewsetsmay cost1000USdollarsmorethantoday’sTVs.Butthey’llcomewithother benefitsthatmaymakethepriceworthwhile.Foronethingthescreenswillbe widerlikemoviescreens.Inadditionthecolorwillbericher.Andyou’ll alsogetdigitalCD-qualitysound.??Besidesthesebenefits digitalTVscanofferyouamuchwiderchoiceofprograms.Digitaldatacan expandTVchoicesbecausecomputerscancompressdigitalsignals.Broadcasters willbeabletosendsixtimesasmuchinformationonthesame channel.Thelastparagraphsaysthat______.
TheCentralDogma ThoughitcomesasnosurprisethatthecompositionofDNAbetweendifferentorganismsisdifferentitisnotimmediatelyobviouswhythemusclecellsbloodcellsandbraincellsofanyoneparticularvertebrate脊椎动物aresodifferentintheirstructureandcompositionwhentheDNAofeveryoneoftheircellsisidentical.Thisisthekeytooneofthemostexcitingareasofmoderncellbiology.Indifferentcelltypesdifferentsetsofthetotalnumberofgenesgenome基因组areexpressed.InotherwordsdifferentregionsoftheDNAareactiveinthemusclecellsbloodcellsandbraincells. TounderstandhowthisdifferenceinDNAactivitycanleadtodifferencesincellstructureandcompositionitisnecessarytoconsiderwhatisoftenknownasthecentraldogma法则ofmolecularbiology:DNAmakesRNAmakeprotein.InmoleculartermsageneisthatportionofDNAthatencodesforasingleprotein.Thedictumonegenemakesoneproteinhasrequiredsomemodification改变withthediscoverythatsomeproteinsarecomposedofseveraldifferentpolypeptide多肽chainsbuttheonegenemakesonepolypeptideruledoeshold. DNAContainstheBlueprintforAllCellProteins. MessengerRNAisaprecisecopytranscriptofthecodedsequenceofnucleicacidbasesinDNAandthismessageistranslatedintoauniqueproteinmoleculeonspecialistorganellesribo-somespresentinthecytoplasm细胞质ofallcells.Proteins蛋白质whicharelargelymadeupofcarbonChydrogenHoxygenOandnitrogenNareconstructedfrom20differentcommonaminoacids.Theversatilityofproteinstheworkhorsemoleculesofthecellstemsfromtheimmensevarietyofmolecularshapesthatcanbecreatedbylinkingaminoacidstogetherindifferentsequences.Thesmallerproteinsconsistofonlyafewdozenaminoacidswhereasthelargeronesmaycontaininexcessof200aminoacidsalllinkedtogetherinalinear线状的chainbypeptidebonds. Astheproteinsarereleasedfromtheribosome核糖体theyfoldintouniqueshapesundertheinfluenceofchemicalforcesthatdependontheparticularsequenceofaminoacids.Sotheproteinprimarysequenceencodedinthegeneandfaithfullytranscribedandtranslatedintoanaminoacidchaindeterminesthethree-dimensionalstructureoftheemergingmolecule.Thehumanbodypossessessome30000differentkindsofproteinsandseveralmillioncopiesofmanyofthese.Eachplaysaspecificrole——forexamplehemoglobincarriesoxygeninthebloodactin肌动蛋白andmyosin肌球蛋白interacttogeneratemusclemovementandacetylcholine乙酸胆碱receptormoleculesmediatechemicaltransmissionbetweennerveandmusclecells. Enzymes—ProteinBiocatalysts Anessentialgroupofproteins—theenzymes酵素—actasbiologicalcatalysts催化剂andregulateallaspectsofcellmetabolism新陈代谢.Theyenablebreakdownofhigh-energyfoodmoleculescarbohydratestoprovideenergyforbiologicalreactionsandtheycontrolthesyntheticpathwaysthatresultinthegenerationoflipidse.g.fatscholesterol胆固醇andothervitalmembrane膜componentscarbohydrates碳水化合物sugarsstarch淀粉andcellulose纤维素thekeycomponentsofplantcellwallsandmanyvitalsmallbiomoleculesessentialforcellfunction. Stempara.3sent.3means______.
{{*HTML*}}? ?下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题{{B}}第一篇{{/B}} {{B}}??????? ??????????? ???HowDoAmericanConsumersBorrow?{{/B}}??Young consumersoftenhavenotestablishedtheircreditratings.Manydonothave steadyincomes.Theymighthavedifficultyborrowingmoneyfromanagencyin businesstomakeloans.Parentsorrelativesareusuallytheirbestsourceof loans.Ofcoursetheparentsorrelativeswouldhavetohavemoneyavailable andbewillingtolendit.Youmightevengetaninterest-freeloan.Howevera parentorrelativewholendsshouldreceivethesameinterestasanyother lender.??Therearedisadvantagesinborrowingfromparentsor relatives.Oneisthattheymaynotinsistonyoupayingbackthemoneybya certaintime.Asaresultyoumightlettheloandragon.Thisisespecially trueifyouarenotrequiredtopayinterest.Thisisnotawaytodevelopgood credithabits.??Formostconsumersthecheapestplacetoborrow isatacommercialbank.Banksareagoodsourceofinstallmentloanwhichmay runfor12monthsorupto30.Mostbanksalsomakesingle-paymentloansto consumersforshortperiods—3060or90days.??Thenewesttypeof bankloanisonethatadepositorcangetsimplybywritingacheck.Itis usuallycalledsomethinglikereadycreditorreservedchecking.Itworks likethis.Adepositorisgivenalimitedamountofcreditusuallybetween＄500 and＄1000.Heorshemaywritechecksuptotheamountallowed.Onceacheck hasbeenwrittentheamountofthecheckbecomesaloan.Usuallynochargeis madeforinterestuntiltheloanismade.Atypicalinterestrateis3centsper ＄100perdayorjustunder1percentamonth.Supposethatyouused＄100of yourcreditandrepaiditin30days.Thecostwouldbe90cents.Ifyourepaid itin10daysthecostwouldbeonly30cents.??Theadvantageof borrowingfromabankisthatbanksgenerallychargelowerratesthanmostother lenders.Onereasonisthatbankshavemorestrictcreditrequirementsthanmost otherlenders.Aconsumermusthaveafairlygoodcreditratingtogetabank loan.Mostcommercialbanksoffer______.
{{*HTML*}}??阅读下面这篇短文短文后列出7个句子请根据短文的内容对每个句子做出判断 {{B}}??????? ??????????? ????TheIceAge{{/B}}??Twentythousand yearsagotheearthwasheldincontrolbyrelentlessly不宽容地probingfingers oficethatdrewpowerfromfrigidstrongholdsinthenorthandcrept southwestwardtoburyforestsfieldsandmountains.Landscapesthatwere violatedbytheslowlymovingglaciers冰川wouldcarrythescarsofthisadvance farintothefuture.Temperaturesdroppeddeeplyandlandsurfacesinmany partsoftheworldweredepressedbytheunrelentingweightofthethrusting ice.Atthesametimesomuchwasdrawnfromtheoceanstoformthesehuge glaciersthatsealevelsaroundtheworldfellbythreehundredandfiftyfeet andlargeareasofthecontinentalshelfbecamedryland.??This periodoftheEarth’shistoryhadcometobecalledtheIceAge.Inallabout elevenmillionsquaremilesoflandwerecoveredwithice.TheIceAge terminatedaboutfourteenthousandyearsagowhentheicesheetsbeganto retreat.Ittookaboutseventhousandyearsfortheicetoretreattoits presentlevel.Itcanbeinferredfromthepassagethatglacierswereprimarilymadeupofseawater.
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{{*HTML*}}? ?下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题{{B}}第一篇{{/B}} {{B}}??????? ??????????? ???HowDoAmericanConsumersBorrow?{{/B}}??Young consumersoftenhavenotestablishedtheircreditratings.Manydonothave steadyincomes.Theymighthavedifficultyborrowingmoneyfromanagencyin businesstomakeloans.Parentsorrelativesareusuallytheirbestsourceof loans.Ofcoursetheparentsorrelativeswouldhavetohavemoneyavailable andbewillingtolendit.Youmightevengetaninterest-freeloan.Howevera parentorrelativewholendsshouldreceivethesameinterestasanyother lender.??Therearedisadvantagesinborrowingfromparentsor relatives.Oneisthattheymaynotinsistonyoupayingbackthemoneybya certaintime.Asaresultyoumightlettheloandragon.Thisisespecially trueifyouarenotrequiredtopayinterest.Thisisnotawaytodevelopgood credithabits.??Formostconsumersthecheapestplacetoborrow isatacommercialbank.Banksareagoodsourceofinstallmentloanwhichmay runfor12monthsorupto30.Mostbanksalsomakesingle-paymentloansto consumersforshortperiods—3060or90days.??Thenewesttypeof bankloanisonethatadepositorcangetsimplybywritingacheck.Itis usuallycalledsomethinglikereadycreditorreservedchecking.Itworks likethis.Adepositorisgivenalimitedamountofcreditusuallybetween＄500 and＄1000.Heorshemaywritechecksuptotheamountallowed.Onceacheck hasbeenwrittentheamountofthecheckbecomesaloan.Usuallynochargeis madeforinterestuntiltheloanismade.Atypicalinterestrateis3centsper ＄100perdayorjustunder1percentamonth.Supposethatyouused＄100of yourcreditandrepaiditin30days.Thecostwouldbe90cents.Ifyourepaid itin10daysthecostwouldbeonly30cents.??Theadvantageof borrowingfromabankisthatbanksgenerallychargelowerratesthanmostother lenders.Onereasonisthatbankshavemorestrictcreditrequirementsthanmost otherlenders.Aconsumermusthaveafairlygoodcreditratingtogetabank loan.Accordingtothefirstparagraphyoungpeople______.
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
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TheAsianFluVirus In1957adoctorinSingaporenoticedthathospitalsweretreatinganunusualnumberofinfluenza-likecases.Influenzaissometimescalledfluorasbadcold.Hetookspecimensfromthethroatsofpatientsinhishospitalandwasabletofindthevirusofthisinfluenza. Therearethreemaintypesoftheinfluenzavirus.ThemostimportantofthesearetypesAandBeachofthemhavingseveralsub-groups.WiththeinstrumentsatthehospitalthedoctorrecognizedthattheoutbreakwasduetoavirusgroupAbuthedidnotknowthesub-group.HereportedtheoutbreaktotheWorldHealthOrganizationinGeneva.W.H.0.publishedtheimportantnewsalongsidereportsofasimilaroutbreakinHongKongwhereabout15%-20%ofthepopulationhadbecomeill. AssoonastheLondondoctorsreceivedthepackageofthroatsamplestheybeganthestandardtests.Theyfoundthatbyreproducingitselfataveryhighspeedthevirushadmultipliedmorethanamilliontimeswithintwodays.Continuingtheircarefulteststhedoctorscheckedtheeffectofdrugsusedagainstalltheknownsub-groupsoftypeAvirusonthisvirus.Noneofthemgaveanyprotection.Thisthenwassomethingnew:anewinfluenzavirusagainstwhichthepeopleoftheworldhadnoreadyhelpwhatsoever. Havingisolatedthevirustheywereworkingwiththetwodoctorsnowconductedtestsonsomespeciallyselectedanimalswhichcontractinfluenzainthesamewayashumanbeingsdo.Inashorttimetheusualsignsofthediseaseappeared.Theseexperimentsrevealedthatthenewvirusspreadeasilybutthatitwasnotakiller.ScientistslikegeneralpubliccalleditsimplyAsianflu. ItcanbeinferredfromthispassagethattheAsianflu______.
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
{{*HTML*}}? ?下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题{{B}}第一篇{{/B}} {{B}}??????? ??????????? ???HowDoAmericanConsumersBorrow?{{/B}}??Young consumersoftenhavenotestablishedtheircreditratings.Manydonothave steadyincomes.Theymighthavedifficultyborrowingmoneyfromanagencyin businesstomakeloans.Parentsorrelativesareusuallytheirbestsourceof loans.Ofcoursetheparentsorrelativeswouldhavetohavemoneyavailable andbewillingtolendit.Youmightevengetaninterest-freeloan.Howevera parentorrelativewholendsshouldreceivethesameinterestasanyother lender.??Therearedisadvantagesinborrowingfromparentsor relatives.Oneisthattheymaynotinsistonyoupayingbackthemoneybya certaintime.Asaresultyoumightlettheloandragon.Thisisespecially trueifyouarenotrequiredtopayinterest.Thisisnotawaytodevelopgood credithabits.??Formostconsumersthecheapestplacetoborrow isatacommercialbank.Banksareagoodsourceofinstallmentloanwhichmay runfor12monthsorupto30.Mostbanksalsomakesingle-paymentloansto consumersforshortperiods—3060or90days.??Thenewesttypeof bankloanisonethatadepositorcangetsimplybywritingacheck.Itis usuallycalledsomethinglikereadycreditorreservedchecking.Itworks likethis.Adepositorisgivenalimitedamountofcreditusuallybetween＄500 and＄1000.Heorshemaywritechecksuptotheamountallowed.Onceacheck hasbeenwrittentheamountofthecheckbecomesaloan.Usuallynochargeis madeforinterestuntiltheloanismade.Atypicalinterestrateis3centsper ＄100perdayorjustunder1percentamonth.Supposethatyouused＄100of yourcreditandrepaiditin30days.Thecostwouldbe90cents.Ifyourepaid itin10daysthecostwouldbeonly30cents.??Theadvantageof borrowingfromabankisthatbanksgenerallychargelowerratesthanmostother lenders.Onereasonisthatbankshavemorestrictcreditrequirementsthanmost otherlenders.Aconsumermusthaveafairlygoodcreditratingtogetabank loan.WhichofthefollowingisNOTtrue?
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
{{*HTML*}}??阅读下面这篇短文短文后列出7个句子请根据短文的内容对每个句子做出判断 {{B}}??????? ??????????? ????TheIceAge{{/B}}??Twentythousand yearsagotheearthwasheldincontrolbyrelentlessly不宽容地probingfingers oficethatdrewpowerfromfrigidstrongholdsinthenorthandcrept southwestwardtoburyforestsfieldsandmountains.Landscapesthatwere violatedbytheslowlymovingglaciers冰川wouldcarrythescarsofthisadvance farintothefuture.Temperaturesdroppeddeeplyandlandsurfacesinmany partsoftheworldweredepressedbytheunrelentingweightofthethrusting ice.Atthesametimesomuchwasdrawnfromtheoceanstoformthesehuge glaciersthatsealevelsaroundtheworldfellbythreehundredandfiftyfeet andlargeareasofthecontinentalshelfbecamedryland.??This periodoftheEarth’shistoryhadcometobecalledtheIceAge.Inallabout elevenmillionsquaremilesoflandwerecoveredwithice.TheIceAge terminatedaboutfourteenthousandyearsagowhentheicesheetsbeganto retreat.Ittookaboutseventhousandyearsfortheicetoretreattoits presentlevel.ThetitlecanbereplacedbyTheGlacialEpoch.
TheCentralDogma ThoughitcomesasnosurprisethatthecompositionofDNAbetweendifferentorganismsisdifferentitisnotimmediatelyobviouswhythemusclecellsbloodcellsandbraincellsofanyoneparticularvertebrate脊椎动物aresodifferentintheirstructureandcompositionwhentheDNAofeveryoneoftheircellsisidentical.Thisisthekeytooneofthemostexcitingareasofmoderncellbiology.Indifferentcelltypesdifferentsetsofthetotalnumberofgenesgenome基因组areexpressed.InotherwordsdifferentregionsoftheDNAareactiveinthemusclecellsbloodcellsandbraincells. TounderstandhowthisdifferenceinDNAactivitycanleadtodifferencesincellstructureandcompositionitisnecessarytoconsiderwhatisoftenknownasthecentraldogma法则ofmolecularbiology:DNAmakesRNAmakeprotein.InmoleculartermsageneisthatportionofDNAthatencodesforasingleprotein.Thedictumonegenemakesoneproteinhasrequiredsomemodification改变withthediscoverythatsomeproteinsarecomposedofseveraldifferentpolypeptide多肽chainsbuttheonegenemakesonepolypeptideruledoeshold. DNAContainstheBlueprintforAllCellProteins. MessengerRNAisaprecisecopytranscriptofthecodedsequenceofnucleicacidbasesinDNAandthismessageistranslatedintoauniqueproteinmoleculeonspecialistorganellesribo-somespresentinthecytoplasm细胞质ofallcells.Proteins蛋白质whicharelargelymadeupofcarbonChydrogenHoxygenOandnitrogenNareconstructedfrom20differentcommonaminoacids.Theversatilityofproteinstheworkhorsemoleculesofthecellstemsfromtheimmensevarietyofmolecularshapesthatcanbecreatedbylinkingaminoacidstogetherindifferentsequences.Thesmallerproteinsconsistofonlyafewdozenaminoacidswhereasthelargeronesmaycontaininexcessof200aminoacidsalllinkedtogetherinalinear线状的chainbypeptidebonds. Astheproteinsarereleasedfromtheribosome核糖体theyfoldintouniqueshapesundertheinfluenceofchemicalforcesthatdependontheparticularsequenceofaminoacids.Sotheproteinprimarysequenceencodedinthegeneandfaithfullytranscribedandtranslatedintoanaminoacidchaindeterminesthethree-dimensionalstructureoftheemergingmolecule.Thehumanbodypossessessome30000differentkindsofproteinsandseveralmillioncopiesofmanyofthese.Eachplaysaspecificrole——forexamplehemoglobincarriesoxygeninthebloodactin肌动蛋白andmyosin肌球蛋白interacttogeneratemusclemovementandacetylcholine乙酸胆碱receptormoleculesmediatechemicaltransmissionbetweennerveandmusclecells. Enzymes—ProteinBiocatalysts Anessentialgroupofproteins—theenzymes酵素—actasbiologicalcatalysts催化剂andregulateallaspectsofcellmetabolism新陈代谢.Theyenablebreakdownofhigh-energyfoodmoleculescarbohydratestoprovideenergyforbiologicalreactionsandtheycontrolthesyntheticpathwaysthatresultinthegenerationoflipidse.g.fatscholesterol胆固醇andothervitalmembrane膜componentscarbohydrates碳水化合物sugarsstarch淀粉andcellulose纤维素thekeycomponentsofplantcellwallsandmanyvitalsmallbiomoleculesessentialforcellfunction. Thebesttitleofthispassageis______.
{{*HTML*}}? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 {{B}}?????????? ??????????? ??HealthEducation{{/B}}1?Healtheducationisthepartof healthcarethatisconcernedwithpromotinghealthybehavior.Aperson’s behaviormaybethemaincauseofahealthproblembutitcanalsobethemain solution.Thisistruefortheteenagerwhosmokesthemotherwiththepoorly nourished营养childandthebutcher屠夫卖肉的人whogetsacutonhisfinger.By changingtheirbeha～viortheseindividualscansolveandpreventmanyoftheir ownproblems.2?Healtheducationdoesnotreplaceotherhealth servicesbutitisneededtopromotetheproperuseoftheseservices.One exampleofthisisimmunization免疫:scientistshavemademanyvaccines疫苗to preventdiseasesbutthisachievementisofnovalueunlesspeopletogo receivetheimmunization.3?Healtheducationencouragesbehaviorthat promoteshealthpreventsillnesscuresdiseaseandcontributestorecovery. Theneedsandinterestsofindividualsfamiliesgroupsorganizationsand communitiesareattheheartofhealtheducationprograms.Thustherearemany opportunitiesforpracticinghealtheducation.4?Healtheducationis notthesamethingashealthinformation.Correctinformationiscertainlya basicpartofhealtheducationbuthealtheducationmustalsoaddresstheother factorsthataffecthealthbehaviorsuchasavailability可获性ofresouces effectivenessofcommunityleadershipsocialsupportfromfamilymembersand levelsofself-helpskills.Healtheducationthereforeusesavarietyofmethods tohelppeopleunderstandtheirownsituationsandchooseactionsthatwill improvetheirhealth.Healtheducationisincompleteunlessitencourages involvementandchoicebythepeoplethemselves.5?Alsoinhealth educationwedonotblamepeopleiftheydonotbehaveinahealthyway.Often unhealthybehaviorisnotthefaultoftheindividual.Inhealtheducationwe mustworkwithfamiliescommunitiesandevenregionalandnationalauthorities tomakesurethatresourcesandsupportareavailabletoenableeachindividual toleadahealthylife.Paragraph2______ A?AddressingaVarietyofBehavior-affectingFactors B?ImportanceofImmunization C?RelationshipwithOtherHealthServices D?CreationofNecessaryConditionsforHealthyBehavior E?EncouragingUnhealthyBehavior F?EncouragementofBehaviorGoodforYourHealth
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
Thelandcrabaforest-floorscavengernativetotropicalAmericamigratestothewaterto{{U}}breed{{/U}}.
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EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
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{{*HTML*}}? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 {{B}}?????????? ??????????? ??HealthEducation{{/B}}1?Healtheducationisthepartof healthcarethatisconcernedwithpromotinghealthybehavior.Aperson’s behaviormaybethemaincauseofahealthproblembutitcanalsobethemain solution.Thisistruefortheteenagerwhosmokesthemotherwiththepoorly nourished营养childandthebutcher屠夫卖肉的人whogetsacutonhisfinger.By changingtheirbeha～viortheseindividualscansolveandpreventmanyoftheir ownproblems.2?Healtheducationdoesnotreplaceotherhealth servicesbutitisneededtopromotetheproperuseoftheseservices.One exampleofthisisimmunization免疫:scientistshavemademanyvaccines疫苗to preventdiseasesbutthisachievementisofnovalueunlesspeopletogo receivetheimmunization.3?Healtheducationencouragesbehaviorthat promoteshealthpreventsillnesscuresdiseaseandcontributestorecovery. Theneedsandinterestsofindividualsfamiliesgroupsorganizationsand communitiesareattheheartofhealtheducationprograms.Thustherearemany opportunitiesforpracticinghealtheducation.4?Healtheducationis notthesamethingashealthinformation.Correctinformationiscertainlya basicpartofhealtheducationbuthealtheducationmustalsoaddresstheother factorsthataffecthealthbehaviorsuchasavailability可获性ofresouces effectivenessofcommunityleadershipsocialsupportfromfamilymembersand levelsofself-helpskills.Healtheducationthereforeusesavarietyofmethods tohelppeopleunderstandtheirownsituationsandchooseactionsthatwill improvetheirhealth.Healtheducationisincompleteunlessitencourages involvementandchoicebythepeoplethemselves.5?Alsoinhealth educationwedonotblamepeopleiftheydonotbehaveinahealthyway.Often unhealthybehaviorisnotthefaultoftheindividual.Inhealtheducationwe mustworkwithfamiliescommunitiesandevenregionalandnationalauthorities tomakesurethatresourcesandsupportareavailabletoenableeachindividual toleadahealthylife.Paragraph4______
{{*HTML*}}? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 {{B}}?????????? ??????????? ??HealthEducation{{/B}}1?Healtheducationisthepartof healthcarethatisconcernedwithpromotinghealthybehavior.Aperson’s behaviormaybethemaincauseofahealthproblembutitcanalsobethemain solution.Thisistruefortheteenagerwhosmokesthemotherwiththepoorly nourished营养childandthebutcher屠夫卖肉的人whogetsacutonhisfinger.By changingtheirbeha～viortheseindividualscansolveandpreventmanyoftheir ownproblems.2?Healtheducationdoesnotreplaceotherhealth servicesbutitisneededtopromotetheproperuseoftheseservices.One exampleofthisisimmunization免疫:scientistshavemademanyvaccines疫苗to preventdiseasesbutthisachievementisofnovalueunlesspeopletogo receivetheimmunization.3?Healtheducationencouragesbehaviorthat promoteshealthpreventsillnesscuresdiseaseandcontributestorecovery. Theneedsandinterestsofindividualsfamiliesgroupsorganizationsand communitiesareattheheartofhealtheducationprograms.Thustherearemany opportunitiesforpracticinghealtheducation.4?Healtheducationis notthesamethingashealthinformation.Correctinformationiscertainlya basicpartofhealtheducationbuthealtheducationmustalsoaddresstheother factorsthataffecthealthbehaviorsuchasavailability可获性ofresouces effectivenessofcommunityleadershipsocialsupportfromfamilymembersand levelsofself-helpskills.Healtheducationthereforeusesavarietyofmethods tohelppeopleunderstandtheirownsituationsandchooseactionsthatwill improvetheirhealth.Healtheducationisincompleteunlessitencourages involvementandchoicebythepeoplethemselves.5?Alsoinhealth educationwedonotblamepeopleiftheydonotbehaveinahealthyway.Often unhealthybehaviorisnotthefaultoftheindividual.Inhealtheducationwe mustworkwithfamiliescommunitiesandevenregionalandnationalauthorities tomakesurethatresourcesandsupportareavailabletoenableeachindividual toleadahealthylife.Healtheducationcannottaketheplaceof______.
{{*HTML*}}? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 {{B}}?????????? ??????????? ??HealthEducation{{/B}}1?Healtheducationisthepartof healthcarethatisconcernedwithpromotinghealthybehavior.Aperson’s behaviormaybethemaincauseofahealthproblembutitcanalsobethemain solution.Thisistruefortheteenagerwhosmokesthemotherwiththepoorly nourished营养childandthebutcher屠夫卖肉的人whogetsacutonhisfinger.By changingtheirbeha～viortheseindividualscansolveandpreventmanyoftheir ownproblems.2?Healtheducationdoesnotreplaceotherhealth servicesbutitisneededtopromotetheproperuseoftheseservices.One exampleofthisisimmunization免疫:scientistshavemademanyvaccines疫苗to preventdiseasesbutthisachievementisofnovalueunlesspeopletogo receivetheimmunization.3?Healtheducationencouragesbehaviorthat promoteshealthpreventsillnesscuresdiseaseandcontributestorecovery. Theneedsandinterestsofindividualsfamiliesgroupsorganizationsand communitiesareattheheartofhealtheducationprograms.Thustherearemany opportunitiesforpracticinghealtheducation.4?Healtheducationis notthesamethingashealthinformation.Correctinformationiscertainlya basicpartofhealtheducationbuthealtheducationmustalsoaddresstheother factorsthataffecthealthbehaviorsuchasavailability可获性ofresouces effectivenessofcommunityleadershipsocialsupportfromfamilymembersand levelsofself-helpskills.Healtheducationthereforeusesavarietyofmethods tohelppeopleunderstandtheirownsituationsandchooseactionsthatwill improvetheirhealth.Healtheducationisincompleteunlessitencourages involvementandchoicebythepeoplethemselves.5?Alsoinhealth educationwedonotblamepeopleiftheydonotbehaveinahealthyway.Often unhealthybehaviorisnotthefaultoftheindividual.Inhealtheducationwe mustworkwithfamiliescommunitiesandevenregionalandnationalauthorities tomakesurethatresourcesandsupportareavailabletoenableeachindividual toleadahealthylife.Promotinghealthybehavioristhegoalof______. A?manyvaccines B?preventdiseases C?healtheducation D?healthybehavior E?changeunhealthybehavior F?otherhealthservices
EdwinHubble EdwinHubblechangedourideasabouttheuniverseandhowitdeveloped.Theworkoffewotherscientistschangedourunderstandingof【51】suddenly.Hemadehismostimportantdiscoveriesinthe1920s.Todayotherscientistscontinuetheworkhebeganbackthen.EdwinPowellHubblewasbornin1889inMarshfieldMissouri.He【52】hisearlyyearsinthestateofKentucky.ThenhemovedwithhisfamilytoChicagoIllinois.HeattendedtheUniversityofChicagotakingmathematicsandastronomy【53】hisspecialty. AsastudentHubblewasalsoamemberoftheUniversity’’sbasketballteamandanexcellentboxer.Severalpeopleurgedhim【54】fortheworldheavyweightboxingchampionshipaftercollege.Insteadhedecidedtocontinuehis【55】. InhisfirstobservationsfromMountWilsonCaliforniaHubbleusedatelescopewithone-hundredfifty-twoandbegan【56】moreandmoredistantobjects.Hisfirstgreatdiscoverywasmade【57】herecognizedaCepheidvariablestar.Cepheidvariablestarsarestarswhosebrightnesschangesatregularperiods. Hubblethenbegantoobservemoredetailsaboutgalaxies.Hestudiedtheirshapesandbrightness.By1925hehadmadeenoughobservationstosaythattheuniverseisorganizedintomanyshapesandsizes. Asstarsdifferfromoneanotherhesaid【58】galaxies.Accordingtohisobservationsthegalaxieshaveacenterandarmsofmatterthatseemtothecenterlikeapinwheel.Otherareshaped【59】baseballsoreggs.Afewhavenospecial【60】Hubbleproposedasystemtodescribegalaxiesbytheirshape.Hissystemisstillusedtoday.Healsoshowedthat【61】aresimilarinthekindsofbrightobjectstheycontain.Allgalaxies【62】arerelatedtoeachothermuchasmembersofafamilyarerelatedtoeachother. Inthelate1920sHubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledtothemostimportant【63】discoveryofthe20thcentury—theexpandinguniverse. Hubbiesdiscovery【64】amajorchangeinourideasoftheuniverse.Theuniversehadnotbeenquietandunchangingsincethebeginningoftimeasmanypeoplehadthought.Itwasexpanding.Theexpandingoftenis【65】theBigBang.
TheCentralDogma ThoughitcomesasnosurprisethatthecompositionofDNAbetweendifferentorganismsisdifferentitisnotimmediatelyobviouswhythemusclecellsbloodcellsandbraincellsofanyoneparticularvertebrate脊椎动物aresodifferentintheirstructureandcompositionwhentheDNAofeveryoneoftheircellsisidentical.Thisisthekeytooneofthemostexcitingareasofmoderncellbiology.Indifferentcelltypesdifferentsetsofthetotalnumberofgenesgenome基因组areexpressed.InotherwordsdifferentregionsoftheDNAareactiveinthemusclecellsbloodcellsandbraincells. TounderstandhowthisdifferenceinDNAactivitycanleadtodifferencesincellstructureandcompositionitisnecessarytoconsiderwhatisoftenknownasthecentraldogma法则ofmolecularbiology:DNAmakesRNAmakeprotein.InmoleculartermsageneisthatportionofDNAthatencodesforasingleprotein.Thedictumonegenemakesoneproteinhasrequiredsomemodification改变withthediscoverythatsomeproteinsarecomposedofseveraldifferentpolypeptide多肽chainsbuttheonegenemakesonepolypeptideruledoeshold. DNAContainstheBlueprintforAllCellProteins. MessengerRNAisaprecisecopytranscriptofthecodedsequenceofnucleicacidbasesinDNAandthismessageistranslatedintoauniqueproteinmoleculeonspecialistorganellesribo-somespresentinthecytoplasm细胞质ofallcells.Proteins蛋白质whicharelargelymadeupofcarbonChydrogenHoxygenOandnitrogenNareconstructedfrom20differentcommonaminoacids.Theversatilityofproteinstheworkhorsemoleculesofthecellstemsfromtheimmensevarietyofmolecularshapesthatcanbecreatedbylinkingaminoacidstogetherindifferentsequences.Thesmallerproteinsconsistofonlyafewdozenaminoacidswhereasthelargeronesmaycontaininexcessof200aminoacidsalllinkedtogetherinalinear线状的chainbypeptidebonds. Astheproteinsarereleasedfromtheribosome核糖体theyfoldintouniqueshapesundertheinfluenceofchemicalforcesthatdependontheparticularsequenceofaminoacids.Sotheproteinprimarysequenceencodedinthegeneandfaithfullytranscribedandtranslatedintoanaminoacidchaindeterminesthethree-dimensionalstructureoftheemergingmolecule.Thehumanbodypossessessome30000differentkindsofproteinsandseveralmillioncopiesofmanyofthese.Eachplaysaspecificrole——forexamplehemoglobincarriesoxygeninthebloodactin肌动蛋白andmyosin肌球蛋白interacttogeneratemusclemovementandacetylcholine乙酸胆碱receptormoleculesmediatechemicaltransmissionbetweennerveandmusclecells. Enzymes—ProteinBiocatalysts Anessentialgroupofproteins—theenzymes酵素—actasbiologicalcatalysts催化剂andregulateallaspectsofcellmetabolism新陈代谢.Theyenablebreakdownofhigh-energyfoodmoleculescarbohydratestoprovideenergyforbiologicalreactionsandtheycontrolthesyntheticpathwaysthatresultinthegenerationoflipidse.g.fatscholesterol胆固醇andothervitalmembrane膜componentscarbohydrates碳水化合物sugarsstarch淀粉andcellulose纤维素thekeycomponentsofplantcellwallsandmanyvitalsmallbiomoleculesessentialforcellfunction. WhichofthefollowingStatementsaboutBiocatalystisfalse?
{{*HTML*}}??阅读下面这篇短文短文后列出7个句子请根据短文的内容对每个句子做出判断 {{B}}??????? ??????????? ????TheIceAge{{/B}}??Twentythousand yearsagotheearthwasheldincontrolbyrelentlessly不宽容地probingfingers oficethatdrewpowerfromfrigidstrongholdsinthenorthandcrept southwestwardtoburyforestsfieldsandmountains.Landscapesthatwere violatedbytheslowlymovingglaciers冰川wouldcarrythescarsofthisadvance farintothefuture.Temperaturesdroppeddeeplyandlandsurfacesinmany partsoftheworldweredepressedbytheunrelentingweightofthethrusting ice.Atthesametimesomuchwasdrawnfromtheoceanstoformthesehuge glaciersthatsealevelsaroundtheworldfellbythreehundredandfiftyfeet andlargeareasofthecontinentalshelfbecamedryland.??This periodoftheEarth’shistoryhadcometobecalledtheIceAge.Inallabout elevenmillionsquaremilesoflandwerecoveredwithice.TheIceAge terminatedaboutfourteenthousandyearsagowhentheicesheetsbeganto retreat.Ittookaboutseventhousandyearsfortheicetoretreattoits presentlevel.Accordingtothepassagetheglaciersmovedfromthenorthdirectlythethesouth.
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