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1、Unit4WildlifeprotectionⅠ.阅读理解(2018·河北辛集中学期中检测)Whenscientistsaccidentallykilledwhatturnedouttobetheworld’soldestlivingcreature,itwasbadenough.Theoceanquahog(圆蛤)—atypeofdeep-seacreature—wascaughtalivefromthebottomoftheNorthAtlanticnearIcelandin2006byresearchers.The
2、ythenputitinafreezer,asisnormalpractice,unawareofitsage.ItwasonlywhenitwastakentoalabthatscientistsfromBangorUniversitystudieditandconcludeditwas400yearsold.ThediscoverymadeitintotheGuinnessBookofWorldRecords.However,bythistime,itwastoolateforMingtheMollusc(软体动物)
3、—namedaftertheChinesedynastywhenitslifebegan.Unfortunately,researcherswhocalculatedMing’sagekilleditinstantlybyopeningitsshell.Theresearchersopenedtheancientclam(蛤)uptojudgeitsagebycountinggrowthringsinside.Buttheringsweresoclosetogetherthatscientistsendeduphavin
4、gtocounttheringsontheoutsidetobeaccurate,leadingtheColumbiaBroadcastingSystemtopointoutthatMingcouldhavelivedon,ifscientistshadjuststartedthere.Now,afterexaminingtheoceanquahogmoreclosely,usingmoreadvancedmethods,theresearchershavefoundtheanimalwasactually100year
5、solderthantheyfirstthought.DrPaulButler,fromtheUniversity’sSchoolofOceanSciences,said,“Wegotitwrongthefirsttimeandmaybewewereabithastypublishingourfindingsthen.Butweareabsolutelycertainthatwe’vegottherightagenow.”Aquahog’sshellgrowsbyalayereveryyear,inthesummerwh
6、enthewateriswarmerandfoodisplentiful.Itmeansthatwhenitsshelliscutinhalf,scientistscancountthelinesinasimilarwaytreescanbedatedbyringsintheirtrunks.Theclamwasbornin1499—justsevenyearsafterColumbusdiscoveredAmericaandbeforeHenryⅧhadevenmarriedhisfirstwife,Catherine
7、ofAragonin1509.1.WhatcausedthedeathofMingtheMollusc? A.Extremecold.B.Hightemperature.C.Anunknowndisease.D.Researchers’mistake.2.Theresearchershadgreatdifficultyin . A.keepingMingfreshinthefreezerB.calculatingMing’sagefrominsideC.openingMing’sshellwidee
8、noughD.countingMing’sringsontheoutside3.Thelasttwoparagraphsaredevelopedmainly . A.bytimeB.byexampleC.bycomparisonD.byspace〚导学号23280041〛Ⅱ.完形填空(2018·云南玉溪期中检测)
