under the cold clear water of lake huron, researchers have found 阅读理解答案,

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1、UnderthecoldclearwaterofLakeHuron,researchershavefound阅读理解答案,　　Ⅴ.阅读理解　　UnderthecoldclearwaterofLakeHuron,researchershavefoundafive－and－a－half－foot－longpieceofwoodthatis8，900yearswood,whichistapered(使成锥形)ononesideinawaythatlooksdeliberate,mayprovideimpor

2、tantcluestoamysteriousperiodinNorthAmericanprehistory.　　“Thiswasthestagewhenhumansgraduallyshiftedfromhuntinglargeanimalstofishing,gatheringandagriculture，”saidanthropologistJohnO’shea.“Butbecausemostoftheplacesinthisareathatprehistoricpeoplelivedinaren

3、owunderwater,wedon’thavegoodevidenceofthisimportantshiftjusthavecluesfrombeforeandafterthechange.”　　WithsupportfromtheNationalScienceFoundation(NSF)andtheNationalOceanicandAtmosphericAdministration(NOAA),O’sheaandhiscolleagueGuyMeadowsbeganexploringthea

4、reaseveralyears2009theyreportedfindingaseriesofstonefeaturesthattheybelievewere“drivelanes”usedbyancientIndianhunters.　　Sincethatdiscovery,O’sheaandMeadowshaveworkedonidentifyinghumancampsites,whicharetypicallylocatedawayfromhuntingtheir25－footboat,ther

5、esearchersfirstspottedtheancientwoodobjectusingasmallpieceofequipmentwithaateamofdivers－includingO’shea－wentdownabout100feettogetit.　　Thewood’sagehasnowbeenfixedbymeansofcarboniscurrentlyundergoingmoredetailedanalysestodeterminewhethertherehasbeenhumanm

6、odification,whichvisualexaminationsuggests.“Thefirstthingyounoticeisthatitappearstohavebeenshapedwitharoundedbaseandapointedtip，”O’sheasaid.“Itmusthavebeenlookslikeitmighthavebeenusedasatentpoleorapoletohangmeat.”　　Inadditiontothewood,theresearchershave

7、collectedmanyothersamplesfromthebottomofthe‘sheaandhiscolleagueswillneedtowaitforcalmerweatherbeforetheycanresumetheirsearchforevidenceofhumanlifeunderthegreatlake.　　【语篇解读】考古学家们的新发现有望印证远古人类从游猎文明到农耕文明的转变。　　1．Duringthemysteriousperiodmentionedinthepassage

8、,theLakeHuronarea________．　　A．wasdesertedbyancientIndians　　B．witnessedthestartofagriculture　　C．wastakenupbylargeanimals　　D．begantobecoveredbywater　　答案　B　　解析　推理判断题。从第一、二段的“...mayprovideimportantcluestoamysteriousperiodinNorthAmeri