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1、新题型大纲样题（考研英语一）一、七（六）选五Directions:Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions41-45,choosethemostsuitableonefromthelistA-Gtofitintoeachofthenumberedblanks.Therearetwoextrachoices,whichdonotfitinanyoftheblanks.MarkyouranswersonANSWERSHEET1.(10points) Long
2、beforeManlivedontheEarth,therewerefishes,reptiles,birds,insects,andsomemammals.Althoughsomeoftheseanimalswereancestorsofkindslivingtoday,othersarenowextinct,thatis,theyhavenodescendantsalivenow.41)________Veryoccasionallytherocksshowimpressionofskin,sothat,apartfromcolor,
3、wecanbuildupareasonablyaccuratepictureofananimalthatdiedmillionsofyearsago.Thekindofrockinwhichtheremainsarefoundtellsusmuchaboutthenatureoftheoriginalland,oftenoftheplantsthatgrewonit,andevenofitsclimate. 42)________.Nearlyallofthefossilsthatweknowwerepreservedinrocks
4、formedbywateraction,andmostoftheseareofanimalsthatlivedinornearwater.Thusitfollowsthattheremustbemanykindsofmammals,birds,andinsectsofwhichweknownothing. 43)________Therewerealsocrab-likecreatures,whosebodieswerecoveredwithahornysubstance.Thebodysegmentseachhadtwopairs
5、oflegs,onepairforwalkingonthesandybottom,theotherforswimming.Theheadwasakindofshieldwithapairofcompoundeyes,oftenwiththousandsoflenses.Theywereusuallyaninchortwolongbutsomewere2feet. 44)________.Ofthese,theammonitesareveryinterestingandimportant.Theyhaveashellcomposedo
6、fmanychambers,eachrepresentingatemporaryhomeoftheanimal.Astheyounggrewlargeritgrewanewchamberandsealedoffthepreviousone.ThousandsofthesecanbeseenintherocksontheDorsetCoast. 45)________. About75millionyearsagotheAgeofReptileswasoverandmostofthegroupsdiedout.Themammal
7、squicklydeveloped,andwecantracetheevolutionofmanyfamiliaranimalssuchastheelephantandhorse.Manyofthelatermammals,thoughnowextinct,wereknowntoprimitivemanandwerefeaturedbyhimincavepaintingsandonbonecarvings. [A]Theshellfishhavealonghistoryintherockandmanydifferentkindsarekn
8、own.[B]Nevertheless,weknowagreatdealaboutmanyofthembecausetheirbonesandshellshavebeenpreservedin
