PASSAGE THREE Why did modern humans survive the successive volcanic eruptions?

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问题 PASSAGE THREE
Why did modern humans survive the successive volcanic eruptions?

选项

答案Because of their fallback populations in Africa and Asia．

解析为什么现代人类能经历了密集的火山爆发而幸存下来?文章第一段结尾处就指出“Modern humans，though，squeaked by，thanks to fallback populations in Africa and Asia，researchers say．”此处squeak by就表示“对付过去”，原因在于thanks to后面引出的原因“其在非洲和亚洲的广大人口储备”。

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专业英语八级

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PASSAGE THREE Why did modern humans survive the successive volcanic eruptions?

专业英语八级

Parentswhosmokeoftenopenawindoworturnonafantocleartheairfortheirchildren,butexpertsnowhaveidentifiedar

ApprenticeshipshavelongbeenpopularinEurope,butworkforce-orientedhighschooltrainingisnearlyascommonin【M1】______U

ApprenticeshipshavelongbeenpopularinEurope,butworkforce-orientedhighschooltrainingisnearlyascommonin【M1】______U

Healthyadultstakeapproximately10-14breathsperminute,butsomepeoplebreathe20ormoretimes—thiscanleadtofeeling

Educationalphilosophyhaschangedagreatdealinthe50yearssinceIwasinschool.Backthen,forexample,Ihadthehighe

Educationalphilosophyhaschangedagreatdealinthe50yearssinceIwasinschool.Backthen,forexample,Ihadthehighe

Despitealloftheadvancesinmedicine,healthcareprovidershaveneverbeenonthecuttingedgeofnewbusinessandmarketin

Americans’circleofcloseconfidantshasshrunkdramaticallyinthepasttwodecadesbutthenumberofpeoplewhosaythey【M1】_

PASSAGETHREEWhatdoes"Butatleastthedirectionoftravelwasthesame."inPara.5mean?

PASSAGETHREEAccordingtothecontext,whatdoes"doesthejob"meaninPara.8?

简述我国纳税人的主要构成。

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投资回收期和投资利润率指标都具有计算简便容易理解的优点，因而运用范围很广，在投资决策时起主要作用。()

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American’scitydwellersareamobilepeople.Thedecennialcensusesprovidedocumentationintheirredundantaccountsofrapid

下列属于柔性接口的是(　　)。