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Directions:Youaregoingtoreadalistofheadingsandatextaboutpreparingintheacademiccommunity.ChoosethemostsuitableheadingfromthelistA-Gforeachnumberedparagraph(41-45).Thefirstandlastparagraphsofthetextarenotnumbered.Thereisoneextraheadingwhichyoudonotneedtouse.MarkyouranswersonANSWERSHEET1.(10points) (sI`FW_
LongbeforeManlivedontheEarth,therewerefishes,reptiles,birds,insects,andsomemammals.Althoughsomeoftheseanimalswereancestorsofkindslivingtoday,othersarenowextinct,thatis,theyhavenodescendantsalivenow. mfF `K2R
41Veryoccasionallytherocksshowimpressionofskin,sothat,apartfromcolor,wecanbuildupareasonablyaccuratepictureofananimalthatdiedmillionsofyearsago.Thatkindofrockinwhichtheremainsarefoundtellsusmuchaboutthenatureoftheoriginalland,oftenoftheplantsthatgrewonit,andevenofitsclimate. +6}CNC9Mp
42Nearlyallofthefossilsthatweknowwerepreservedinrocksformedbywateraction,andmostoftheseareofanimalsthatlivedinornearwater.Thusitfollowsthattheremustbemanykindsofmammals,birds,andinsectsofwhichweknownoting.Gengduoyuanxiaowanzhengkaoboyingyuzhentijiqijiexiqinglianxiquanguomianfeizixundianhua:silinglingliuliubaliujiuqiba,huojiazixunqq:qiqierliuqibawusanqi. Sb?Ua*(L:
43Therewerealsocrablikecreatures,whosebodieswerecovered "',;pGg|K
withahornysubstance.Thebodysegmentseachhadtwopairsoflegs,onepairforwalkingonthesandybottom,theotherforswimming.Theheadwasakindofshieldwithapairofcompoundeyes,oftenwiththousandsoflenses.Theywereusuallyaninchortwolongbutsomewere2feet. $-|$4lr
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44Ofthese,theammonitesareveryinterestingandimportant.Theyhaveashellcomposedofmanychambers,eachrepresentingatemporaryhomeoftheanimal.Astheyounggrewlargeritgrewanewchamberandsealedoffthepreviousone.ThousandsofthesecanbeseenintherocksontheDorsetCoast. .LDp.#d9r1
45About75millionyearsagotheAgeofReptileswasoverandmostofthegroupsdiedout.Themammalsquicklydeveloped,andwecantracetheevolutionofmanyfamiliaranimalssuchastheelephantandhorse.Manyofthelatermammalsthoughnowextinct,wereknowntoprimitivemanandwerefeaturedbyhimincavepaintingsandonbonecarvings. %pH|2VB#
[A]Theshellfishhavealonghistoryintherockandmanydifferentkindsareknown. I(WIT=Wi<
[B]Nevertheless,weknowagreatdealaboutmanyofthembecausetheirbonesandshellshavebeenpreservedintherocksasfossils,fromthemwecantelltheirsizeandshape,howtheywalked,thekindoffoodtheyate. WMW=RgiW\
[C]Thefirstanimalswithtruebackboneswerethefishes,firstknownintherocksof375millionyearsago.About300millionyears wW8[t8%43
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agotheamphibians,theanimalsabletolivebothonlandandinwater,appeared.Theyweregiant,sometimes8feetlong,andmanyofthemlivedintheswampypoolsinwhichourcoalseam,orlayerisformed.Theamphibiansgaverisetothereptilesandfornearly150millionyearstheseweretheprincipalformsoflifeonland,inthesea,andintheair. mhOgv\?
[D]Thebestindexfossilstendtobemarinecreatures.Theseanimalsevolvedrapidlyandspreadoverlargeoverlargeareasoftheworld. -rjQ^ze
[E]Theearliestanimalswhoseremainshavebeenfoundwereallverysimplekindsandlivedinthesea.Laterformsaremorecomplex,andamongthesearethesealilies,relationsofthestar yGSZ;BDW:K
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whichhadlongarmsandwereattachedbyalongstalktotheseabed,ortorocks. G<$8g-O;D
[F]Whenananimaldies,thebody,itsbones,orshell,mayoftenbecarriedawaybystreamsintolakesortheseaandtheregetcoveredupbymud.Iftheanimallivedintheseaitsbodywouldprobablysinkandbecoveredwithmud.Moreandmoremudwouldfalluponituntilthebonesorshellbecomeembeddedandpreserved. ;<