有幾個(gè)理論可以用來解釋公元前一萬年大動(dòng)物的滅絕

大動(dòng)物的 導(dǎo)致了動(dòng)物的。老師對(duì)該理論也持否定態(tài)度。大動(dòng)物的幾個(gè)解釋對(duì)應(yīng)原文第一段Byabout10000B.C.E.,allthosegiantcreatures,theMegfaunaofNorthAmericaweregone.Wedonotknowexactlywhathappenedtothem,buttherearesome正確答案分析錯(cuò)誤答案分析確選項(xiàng)AAndthereisaClovissiteinavalleyinSouthernCaliforniawheretheremainsofthirteenmammothswerefound.Andspearpoints,toolsforprocessingmeat,andfireplaces.ThatwouldappeartobesomeprettycompellingC.最容易犯錯(cuò)的選項(xiàng)，注意邏輯關(guān)系，原文提到在這個(gè)地方發(fā)現(xiàn)猛犸象，是為了支持該理C本身錯(cuò)誤。 正確選項(xiàng)C原文對(duì)應(yīng)第三段SoIthinkitisquitelikelythatthose13mammothinSouthernCaliforniaalsodiedofnaturecauses,andthatClevispeoplesimplytookadvantageofthesituation.soI就是說，老師并不覺得是這些人的捕殺導(dǎo)致了大動(dòng)物的，因此對(duì)應(yīng)C選項(xiàng)。難點(diǎn)在于Cbeplishedat是這些人導(dǎo)致了動(dòng)物的，正好相反。toolsforprocessingmeat,很多學(xué)生在聽不懂的時(shí)候原文對(duì)應(yīng)內(nèi)容Ataroundof11500B.C.E.,theworldwascomingoutoftheiceage.Andwiththatcameincreasedseasonality,thatis,thesummersbecamewarmer,andthewintersactuallybecamecolder.Thisextremeshiftswouldhaveputalotofstressonthebodiesofanimalsthatwereusedtoamoremoderaterangeoftemperatures.Butthemostimportantimpactofthisincreasedseasonalitymayverywellhavebeenitseffectonthedistributionofplants.正確選項(xiàng)分析butthemost原文提到冰川時(shí)代結(jié)束之后季節(jié)性更強(qiáng)，夏天更熱了，冬天更冷了。所以對(duì)應(yīng)B。第二Cfood，同時(shí)在此段更具體的解釋中提到冰川時(shí)代之后植物多樣性減少，從而導(dǎo)致植物的。但是對(duì)于做對(duì)該題來說更具體的解釋其實(shí)對(duì)于選C沒有太大意義，只需要聽到兩個(gè)方面的并列的影響即可。A.D.新表明氣候變化并不像科學(xué)家以前一度認(rèn)為的那樣那么和劇烈Again,wehavewhatatfirstseemslikeaprettyattractivetheory,butthen,howdoyouexplainthefactthatthishashappenedbefore?Youknow,globalcoolingfollowedbyglobalwarming,andtherewasnoextinction該句意思是之前氣候變化也發(fā)生過，首先特別冷，之后全球變暖，但當(dāng)時(shí)并沒有發(fā)生動(dòng)物的情況。也就是說大動(dòng)物在之前的氣候變化里生存下來了。所以對(duì)應(yīng)B選項(xiàng)。該題考查老師對(duì)該理論的態(tài)度，考點(diǎn)角度也有明確的信號(hào)詞，但是句子比較難聽懂。Onethinghefoundwasthathumansdidnotnecessarilyhavetokilltheseanimalsingreatnumbersinordertonudgethemtowardtheextinction.That'sbecauseverylargeanimalshaveaslowrateofreproduction,soallyouhavetodoisremoveafewyoungfemalesfromtheherdsandyoucan,fairlyquickly,significantlyreducethepopulation.Andthenhecameupwithascenariothatcombinedsomehuntingbyhumanswithsomeenvironmentalstress,and...bang.Thesimulatedmammothwereextinctwithindecades.信號(hào)詞：onething…；and物，因?yàn)樗麄兊穆时容^低，只需要?dú)⑺酪恍┐菩跃涂梢粤恕?/p>