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1、Unit4 Astronomy:thescienceofthestars课时作业Ⅰ.阅读(2020·贵阳市普通高中高三年级摸底考试)Manyofusthink,wrongly,thatthemoondoesn'tchange.Forexample,theTangDynastypoetZhangRuoxuoncewrotethat“Generationshavecomeandpassedaway;Fromyeartoyearthemoonslookalike,oldandnew.”However,anews
2、tudypublishedinthejournalNatureGeoscienceshowsthatthemoonisinfactslowlyshrinkingovertime.Forthestudy,agroupofUSscientistsexaminedandanalyzedthousandsofphotographstakenbytheNASA'sLunarReconnaissanceOrbiterCamera(月球勘测轨道飞行器照相机).Theyfoundthattherewerelotsoffa
3、ults(断层)onthesurfaceofthemoon.Thesefaultswereformedbyrecentmovementonthemoon.AccordingtoNASA,themoonismadeupofpiecesofrockswithahotcore.Themooncontinuedtoexpandasitwasborn.Butinthisprocess,itreleasedenergyandcooleddown.Thenitbegantoshrink,inawaycomparable
4、totheshrinkingofagrapeintoaraisin.Overthepastseveralhundredmillionyears,ithasbecome46meters“skinnier”.Butduetoitshardandrockylayer,themoon'ssurfacecontinuestopushup.“Someofthesequakescanbefairlystrong,aroundfiveontheRichterscale(里氏震级)，”saidThomasWatters,a
5、seniorscientistattheSmithsonian'sNationalAirandSpaceMuseumintheUS.Butdoesthatmeanthemoonisadangerousplacethathumanshouldn'ttrytoexploreandliveoninthefuture?Maybenot,reportedTheTelegraph.“Thisisn'tanythingtoworryabout.Themoonmaybeshrinking,butnotbymuch.It'
6、snotgoinganywhere，”Watterscomfortedus.Thenewdiscoveryprovesthattheideathatthemoonisadead,boringplaceiswrong.“Wehavebeentothemoonandwe'vedonesomegreatscience,butthereisstillalotwedon'tknow.Themoonisshrinking—wedidn'treallyrealizethatuntilrecently.It'samuch
7、moreactiveandinterestingplacethanwethoughtandweshouldexplorethat，”NASAscientistNathanWilliamssaid.篇章导读：本文是一篇说明文。一项最新的科学研究表明，月球正在随着时间慢慢地缩小。此外，这项研究还表明月球还有许多我们不了解的东西，它是一个比我们认为的更活跃、更有意思的地方，值得我们探索。1．Whichpointofviewaboutthemoonmaythewriteragreeto?A．Itstaysthes
8、ameasbefore.B．Itisbecomingslightlysmaller.C．Itisgettingolderandolder.D．Ithaspassedaway.答案：B 细节理解题。根据第二段第一句“However,anewstudy...showsthatthemoonisinfactslowlyshrinkingovertime.”可知，一项新的发表在《自然·地球科学》上的研究表明，月球正在随着时间慢慢地缩小
