2018-2019学年新课堂英语选修八人教版名师优质讲义：Unit5Word版含答案.docx

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1、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯名校名推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯Oneoftherichestcollectionsofearly-humanfossilseverfoundhasbeentakenoutofanAfricancave，thankstotheeffortsofateamofscientistssmallenoughtofitthroughancientnarrowways.Thefossils，discoveredinthedarkplacesoftheRisingStarcaveinSouthAfrica，belongto

2、anewspeciesthatappearedatthebeginningofthefamilythatincludesmodernhumans.Thefossilscouldbemorethan2.5millionyearsold.Ortheycouldberelativelyrecent.Homosapiens(智人)appearedinAfricaroughly200,000yearsago，sothebonesareatleastthatold.Thenewspeciesisastrangemixtureofparts.Ithadhandsandfeetmuch

3、likethoseofothermembersofthebiologicalgroupcalledHomo，whichincludesourownspecies—Homosapiens.Itsbrain，though，wasonlyaboutasbigasanorange.TheRisingStarancienthumanscouldcontrolobjectswiththeirhands，buttheirhighlycurvedfingersalsomadethemgoodclimbers.TheirHomo-likefeetandlonglegsshowtheyco

4、uldwalklongdistances，buttheirshouldersarealsosuitedforclimbing.TheresearcherscallthemHomonaledi，afterthewordfor“starthe”inAfricanlanguageSotho.Thefirstslightknowledgeofthemorethan1,550bitsoffossil，representingatleast15individuals，camefromcavershelpingaresearchertolookforancientremains.On

5、eplaceleadingtothefossilroomisjustoversevenincheswide—lessthanthewidthofasheetofnotebookpaper.Ittookateamincludingsixfemalescientists，chosenfortheirsmallsizeandresearchexperience，togetthefossils.Thescientistsbelievethatthebodiesweredeliberatelyplacedinthecave.Itsuggeststhatancientlong-ag

6、ohumanrelativesbecameinvolvedinritualdisposalsoftheirdead.Notes1．fossiln．化石2．relativelyadv.相对地3．roughlyadv.粗略地4．curvedadj.弯曲的5．representv．代表6．deliberatelyadv.故意地1⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯名校名推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7．ritualadj.仪式地2