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选择性必修第三册Unit4AdversityandCourage
高考题型组合练
Ⅰ.阅读理解
A
Untilnow,scientistshaven’tbeenabletostudythenewrockonthemoon.Thenewsamples
fromChang’e5willchangethis.They’refromnearMonsRümker,avolcanicmountainwhere
therockisthoughttobemuchyounger—about1billionyearsold.
Therearealotofreasonsscientistsareeagertostudythisyoungerrock,oneofwhichisthatit
couldhelpusmorepreciselydatenotonlythemoon,butmanyrockyplanetsandotherobjects.
Here’showthatworks:Scientistsdatelunarrockbyusingsomethingcalledachronology
curve(年代学曲线),saysJolliff,ascientistatWashingtonUniversityinSt.Louis.Basically,they
increaseasobjectsstriketherockovertime.Tomakethisestimation,scientistsneedtomatchthe
numberofcraterstoapreciseage.Rightnow,theyonlyhavedatapointsforlunarrockthatis3to4
billionyearsold.Moderntechniquescandatethenewsampleextremelyaccurately,andonce
scientistsknowitspreciseage,theycanaddavaluabledatapointtotheirchronologycurve.The
,like
rockyplanetsandothermoons.
howvolcanismworksonthemoon.Jolliffsaysthatit’sunclearwhytherewasvolcanicactivityon
themoonforsuchalongperiodoftime.Mostofthemoon’svolcanicactivity,hesays,isthought
tohaveoccurred3or4billionyearsago,whenthemoonwasstillprettyyoung.Butsincethemoon
doesnothaveplatestructure,whichdrivesvolcanismonEarth,it’sunclearwhatcouldhave
causedmuchlatervolcanicactivity.“That’ssomethingthatyoucanfindoutofthesamplesby
studyingtheminthelab,”Jolliffsays.
语篇解读本文是一篇说明文。嫦娥五号带回的样本使得研究月球上的新岩石成为可能,
而研究这种岩石的好处是什么呢?文章对此进行了说明。
1.Whatdoestheunderlinedword“this”inparagraph1referto?
A.Thefactofbeingunabletos
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