GMAT备考:逻辑练习之GWD6-Q40
2021-11-29点击量:125
GWD6-Q40:ItistheoreticallypossiblethatbacteriadevelopedonMarsearlyinitshistoryandthatsomewerecarriedtoEarthbyameteorite.However,strainsofbacteriafromdifferentplanetswouldprobablyhavesubstantialdifferencesinproteinstructurethatwouldpersistovertime,andnotwobacterialstrainsonEartharedifferentenoughtohavearisenondifferentplanets.So,evenifbacteriadidarriveonEarthfromMars,theymusthavediedout.Theargumentismostvulnerabletowhichofthefollowingcriticisms?A.ItfailstoestablishwhetherbacteriaactuallydevelopedonMars.B.ItfailstoestablishhowlikelyitisthatMartianbacteriaweretransportedtoEarth.C.ItfailstoconsiderwhetherthereweremeansotherthanmeteoritesbywhichMartianbacteriacouldhavebeencarriedtoEarth.D.ItfailstoconsiderwhetherallbacterianowonEarthcouldhavearisenfromtransportedMartianbacteria.E.ItfailstoconsiderwhethertherecouldhavebeenstrainsofbacteriathatoriginatedonEarthandlaterdiedout.答案:D新东方教育频道或添加老师微信:...