云南省曲靖市宣威市龍場(chǎng)鎮(zhèn)第一中學(xué)2022年高三英語(yǔ)模擬試卷含解析

云南省曲靖市宣威市龍場(chǎng)鎮(zhèn)第一中學(xué)2022年高三英語(yǔ)模擬試卷含解析一、選擇題1.Chinaisareliablepartner,becausewealwayshonorour.A.commitment B.quality C.cooperation D.virtue參考答案：A句意:中國(guó)是一個(gè)可以信賴(lài)的伙伴,因?yàn)槲覀円恢毙攀匚覀兊某兄Z。commitment意為"承諾";quality意為"品質(zhì)";cooperation意為"合作";virtue意為"美德"。2.Themovetoprotectanimals

inpopularityacrossChinainrecentyears.

A.havegrown B.hasgrown C.hadgrown D.grew參考答案：B3.--Wheredidyouwatchthenationalflagbeingraisedat08:08onAugust8?

--Itwasonthesquare

Imadeavisittheotherday.

A.which

B.that

C.towhich

D.towhere參考答案：C4.AlthoughJackissatisfiedwithhisacademicachievement,hewonders

willhappentohisfamilylife.

A.that B.it C.this D.what參考答案：D5.Todaywehavetoomanychoicesofcommunicationthroughadvancedtechnology,butweseem

thejoyofcommunicatingfacetoface.

A.losing

B.tobelosing

C.tobelost

D.havinglost

參考答案：B略6.Asourteacheroftenputsit,

tokeyuniversities

thosewhowillnevergiveuphalfway.A.beingadmitted;are B.admitting;is C.admitted;are D.tobeadmitted;is參考答案：C7.—Whenshallwestart?

--Let’s____it8:30.Isthatallright?

A.set

B.meet

C.make

D,take參考答案：C8.—Thatmusthavebeenaterrifyingexperience.

—Yeah.I_____inthedamagedcar,unabletomove.

A.wasstuck

B.havebeenstuck

C.amstuck

D.hadbeenstuck參考答案：A略24.

—HowlonghaveyouknownJohn?

—Sincehe______toourclass.A.hascome

B.came

C.hadcome

D.comes參考答案：24.選B。考查時(shí)態(tài)。since“自從……以來(lái)”，主句用現(xiàn)在完成時(shí)，since引導(dǎo)的時(shí)間狀語(yǔ)從句用一般過(guò)去時(shí)。

【解析】略10.What'sthe________languageinChina?A．speaking

B．spoken

C．bespoken

D．tospeak參考答案：B略11..Theconference____afullweekbythetimeitends.A.musthavelasted

B.willhavelasted

C.wouldlast

D.haslasted參考答案：B略12.HespokewithClare,

thetelephonerangthreetimes.A、towhich

B、duringwhich

C、onwhich

D、forwhich參考答案：B[解析]句意：他與Clare講話期間，電話響了三次。13.Accordingtotheschoolrule,nochild

beallowedoutoftheschool,unlessaccompaniedbyhisorherownparents.A.should

B.mustC.shall

D.can參考答案：C【詳解】考查shall的特殊用法。句意：根據(jù)學(xué)校規(guī)定，除非有親生父母陪同，否則不得讓任何兒童離開(kāi)學(xué)校。A.should意為“按理說(shuō)，應(yīng)該，竟然”；B.must意為“必須，偏偏，非要”；C.shall用于第二和第三人稱(chēng)的陳述句時(shí)，有“警告、命令、威脅、允諾”等；D.can有“可能，可以”之意。分析語(yǔ)境可知，本句中含有命令或警告的意思，即如果不是親生父母，誰(shuí)也不得帶走兒童，所以從語(yǔ)氣來(lái)說(shuō)，應(yīng)該選C項(xiàng)。【點(diǎn)睛】Shall作為助動(dòng)詞，一般用于第一人稱(chēng)Ⅰ和We，表示一個(gè)將來(lái)的動(dòng)作，構(gòu)成將來(lái)時(shí)態(tài)。Shall后面接動(dòng)詞原形。例如：（1）IshallthinkitoverandLetyouknowmyidea.我將考慮一下此事，然后告訴你我的想法。（2）Weshallhaveagoodtimeinthepark.我們?cè)诠珗@里會(huì)玩得很高興的。1.Shall用于第一人稱(chēng)，表示征求對(duì)方的意愿。如：Whatshallwedothisevening?我們開(kāi)始上課好嗎？2.Shall用于第一、第三人稱(chēng)疑問(wèn)句中，表示說(shuō)話人征求對(duì)方的意見(jiàn)或向?qū)Ψ秸?qǐng)示。如：Shallwebeginourlesson?Whenshallhebeabletoleavethehospital?他什么時(shí)候能出院？3.Shall用于第二、第三人稱(chēng)，表示說(shuō)話人給對(duì)方命令、警告、允諾或威脅。如：Youshallfailifyoudon'tworkharder.如果你不加倍努力，你會(huì)失敗的。（警告）HeshallhavethebookwhenIfinishreading.我讀完后，他會(huì)得到那本書(shū)（允諾）Heshallbepunishedifhedoso.如果他再這樣做，必將受到處罰。（威脅）14.Themoviewas

foranimportantinternationalprize，butitgotnothingintheend．

A．made

B．designed

C．intended

D．supposed參考答案：C略15.Iftheproject________beforetheendofthismonthisdelayed,theconstructioncompanywillbefined.A.completed

B.beingcompletedC.tobecompleted

D.completing參考答案：C考查非謂語(yǔ)動(dòng)詞。從語(yǔ)境可以看出，如果建筑工程被耽擱的話，建筑公司將被罰款，所以工程應(yīng)當(dāng)是正在被建，將要被完成。所以要用動(dòng)詞不定式tobecompleted．．．短語(yǔ)作定語(yǔ)。故選C。16.Busywiththeirbusiness,theyhadnotimeto______theirwedding,sotheyhaditorganizedbyacompany.A.accelerateB.arrangeC.approveD.acknowledge參考答案：B試題分析∶考查動(dòng)詞。句意是他們沒(méi)有時(shí)間安排婚禮。A.accelerate促進(jìn)；增加；B.arrange安排；C.approve贊同；D.acknowledge意識(shí)到。故選B。17.Thenaturalenvironmentshouldbeprotectedbecauseoftheimportantrole_______playsinhumansurvivalanddevelopment.A.which

B.theone

C.it

D.that參考答案：C考查代詞。句意：自然環(huán)境應(yīng)該被保護(hù)，因?yàn)樗谌祟?lèi)生存和發(fā)展方面起著重要作用。此處用it指代Thenaturalenvironment，在從句中作主語(yǔ)，it用于替代上文出現(xiàn)的同一事物，所指的是同名同物；one用于替代上文提到的可數(shù)名詞單數(shù)，表示泛指；that用于替代上文出現(xiàn)的可數(shù)名詞單數(shù)或不可數(shù)名詞，表特指。one和that所指的是同名異物。不能用which，如果是which的話，那構(gòu)成定語(yǔ)從句，先行詞是role，但這不符合語(yǔ)境。故只能選C。18.________physicalexaminationisamustinmanycompanies.A.Common B.Regular C.Normal D.Ordinary參考答案：B略19.Hot_______thenightairwas,wesleptdeeplybecauseweweresotiredafterthelongjourney.

A.although

B.as

C.while

D.however參考答案：B略二、完型填空20.WhenstudyinginAustralia,donotworryaboutunderstandingthelocallanguage．GeneralEnglishprogramsareofferedtohelpyou___41___English．AsaGeneralEnglish___42___atGreenwichCollege，Iwilltellyouwhatyoucanlearnfromtheseprograms．IteachEnglishatalllevelsfrom___43___toadvanced．Myclassesusually___44___withafunactivity．Weplayvocabularyandgrammar___45___．SometimeswelistentoAustralian___46___anddecideifwelikethelyrics(歌詞)．Afterwehaveall___47___up，wemoveontothegrammarorvocabularyoftheday．We___48___itthroughwritingorspeaking.We___49___onourotherskills(reading，writingorlistening)intheafternoon，andusetheseskillstobetterunderstandthegrammarorvocabulary．___50___attheendoftheday,wetalkabout___51___toliveandworkinAustralia．Wediscusstheproblems，___52___howtounderstanddifferentaccents．newwordsandmakenewfriends．Ifthereareanyproblems，wehelpeachother,offeringadviceand___53___GeneralEnglishalsooffers___54___classestoimproveyourspeakingability．Weofferspecialgrammarandconversationclasses，aswellasamovieclub!YoucanalsocomewithustotheOperaHouse，thebeach，thezoooreventoamuseum.Ifyoufeel___55___aboutusingyourspokenEnglish，don’tworry!Everyonefeelsthe___56___．So，inGeneralEnglishwehaveactivitiesthat___57___youtalkingtoclassmates，excursions(遠(yuǎn)足)that___58___yourconfidence，andstudentpartiesthathelpyoutalktoothers.It'sagreatwayto___59___allyouEnglishskillsaswellashaveafantastic___60___MaybeI’llseeyouinmyclasssoon．41.A.test B.grasp C.cover D.teach42.A.student B.worker C.teacher D.guide43.A.beginners B.1earners C.courses D.subjects44.A.deal B.work C.compete D.start45.A.toys B.sports C.games D.music46.A.songs B.dialogues C.news D.reports47.A.turned B.shut C.looked D.warmed48.A.catch B.practice C.appreciate D.enjoy49.A.depend B.keep C.focus D.base50.A.Firstly B.Secondly C.Thirdly D.Finally51.A.why B.how C.when D.whether52.A.including B.remaining C.deciding D.judging53.A.house B.disadvantage C.support D.challenge54.A.1istening B.writing C.accent D.reading55.A.nervous B.comfortable C.excited D.proud56.A.opposite B.fixed C.same D.forced57.A.take B.imagine C.get D.remind58.A.build B.catch C.appreciate D.draw59.A.value B.improve C.instruct D.arrange60.A.feeling B.thought C.adventure D.experience參考答案：41.B

42.C

43.A

44.D

45.C

46.A

47.D

48.B

49.C

50.D

51.B

52.A

53.C

54.C

55.A

56.C

57.C

58.A

59.B

60.D試題分析：本文以一位老師的視角，介紹了在澳大利亞學(xué)習(xí)時(shí)，去上通用英語(yǔ)課程的課，你可以從中學(xué)到的東西?！?1題詳解】考查動(dòng)詞辨析。A.試驗(yàn)、測(cè)驗(yàn)；B.抓住、領(lǐng)會(huì)；C.包括、覆蓋；D.教。普通英語(yǔ)課程幫助學(xué)習(xí)英語(yǔ)。根據(jù)前文WhenstudyinginAustralia,donotworryaboutunderstandingthelocallanguage．當(dāng)在澳大利亞學(xué)習(xí)時(shí)，不用擔(dān)心理解當(dāng)?shù)卣Z(yǔ)言。故選B?！?2題詳解】考查名詞辨析。A學(xué)生；B工人；C教師；D向?qū)А?dǎo)游。作為格林尼治大學(xué)的一名通用英語(yǔ)老師，我會(huì)告訴你能從這些課程中學(xué)到什么。結(jié)合下文IteachEnglishatalllevelsfrom

toadvanced．我教各等級(jí)的英語(yǔ)，可知“我”是一位老師，故選C?！?3題詳解】考查名詞辨析。A初學(xué)者；B學(xué)者；C課程；D學(xué)科。我教各水平的英語(yǔ)，從初學(xué)者到高級(jí)的，故選A?！?4題詳解】考查動(dòng)詞辨析。A解決；B工作；C競(jìng)爭(zhēng)；D開(kāi)始。我的課通常以有趣的活動(dòng)開(kāi)始。因?yàn)槭荕yclasses，故可知是選start，startwith，以……開(kāi)始。故選D?！?5題詳解】考查名詞辨析。A玩具；B運(yùn)動(dòng)；C游戲；D音樂(lè)。我們玩詞匯和語(yǔ)法游戲。根據(jù)上文，我的課以有趣的活動(dòng)開(kāi)始，故此處是指游戲。故選C?！?6題詳解】考查名詞辨析。A歌曲；B對(duì)話；C新聞；D報(bào)告。有時(shí)我們聽(tīng)聽(tīng)澳大利亞歌曲，然后決定是否我們喜歡歌詞。根據(jù)后文的lyrics(歌詞)，故選A?！?7題詳解】考查up動(dòng)詞短語(yǔ)辨析。A出現(xiàn)、調(diào)大；B關(guān)閉；C仰望、查閱；D熱身、準(zhǔn)備運(yùn)動(dòng)。我們做完所有的準(zhǔn)備活動(dòng)后，我們進(jìn)入的語(yǔ)法或詞匯的一天。前面所提到的玩游戲，聽(tīng)歌這些都屬于課前的準(zhǔn)備活動(dòng)，故選D?！?8題詳解】考查動(dòng)詞辨析。A抓住，趕上；B練習(xí)；C欣賞、感謝；D喜歡、享受。我們通過(guò)寫(xiě)作和說(shuō)話交流練習(xí)詞匯和語(yǔ)法。由于前文提到，一天的課程主要是詞匯和語(yǔ)法，故選B。【49題詳解】考查on動(dòng)詞短語(yǔ)辨析。A依賴(lài)、依靠；B繼續(xù)；C集中于；D基于、以……為根據(jù)。下午我們專(zhuān)注在其他的技能（閱讀、寫(xiě)作和聽(tīng)力)，并且使用這些技能，以更好地理解語(yǔ)法和詞匯。上午主要是寫(xiě)作或者口語(yǔ)，故下午練習(xí)的重點(diǎn)轉(zhuǎn)移，故選D?！?0題詳解】考查副詞辨析。A第一；B第二；C第三；D最后。根據(jù)后文attheendoftheday,在一天結(jié)束時(shí)，故可知此處應(yīng)是最后，最終。故選D?！?1題詳解】考查連詞辨析。A為什么；B如何；C什么時(shí)候；D是否。在一天結(jié)束時(shí)，我們談?wù)撊绾卧诎拇罄麃喩詈凸ぷ?。由下文Wediscusstheproblems，52howtounderstanddifferentaccents．newwordsandmakenewfriends．我們討論問(wèn)題，52如何理解不同的口音，新單詞和結(jié)交新朋友?？芍颂帒?yīng)填how。故選B?！?2題詳解】考查非謂語(yǔ)動(dòng)詞辨析。A包括；B保持；C決定；D判決。我們討論這些問(wèn)題，包括如何理解不同的口音，新單詞和結(jié)交新朋友。要討論的問(wèn)題有很多，而提到的只是一部分，故選A?！?3題詳解】考查名詞辨析。A房子；B缺點(diǎn)；C支持；D挑戰(zhàn)。如果有任何問(wèn)題，我們互相幫助，提供咨詢(xún)意見(jiàn)并給予支持。在澳大利亞學(xué)習(xí)，且來(lái)上通用英語(yǔ)課程的都是異國(guó)他鄉(xiāng)的人，當(dāng)然是互相幫忙，給予一定的支持，故選C?！?4題詳解】考查名詞辨析。A聽(tīng)力；B寫(xiě)作；C口音；D閱讀。通用英語(yǔ)還提供口音課程來(lái)提高你的口語(yǔ)表達(dá)能力。因?yàn)槭且岣呖谡Z(yǔ)表達(dá)能力，故提供口音課程，故選C?！?5題詳解】考查形容詞辨析。A緊張的；B舒適的；C興奮的；D自豪的。如果你覺(jué)得使用你的英語(yǔ)口語(yǔ)緊張，別擔(dān)心！學(xué)英語(yǔ)作為第二語(yǔ)言，用英語(yǔ)跟別人講話時(shí)，都會(huì)覺(jué)得緊張的，故選A?！?6題詳解】考查形容詞辨析。A相反的；B固定的；C一樣的；D被迫的、強(qiáng)迫的。每個(gè)人都是感覺(jué)相同的。前文提到用英語(yǔ)跟別人講話時(shí)，你可能會(huì)覺(jué)得緊張的，其實(shí)每個(gè)人都會(huì)覺(jué)得緊張，故選C?！?7題詳解】考查動(dòng)詞辨析。A拿、??；B想象；C使得、獲得；D提醒、使想起。在通用英語(yǔ)課程里，我們有活動(dòng)使你跟同學(xué)們交談。get的用法，getsbdoing，使/讓某人做，故選C?！?8題詳解】考查動(dòng)詞辨析。A建立；B抓住、趕上；C欣賞、感激；D畫(huà)、吸引。在通用英語(yǔ)課程里，我們有活動(dòng)使你跟同學(xué)們交談，有短途旅行（遠(yuǎn)足）增強(qiáng)你的信心和同學(xué)聚會(huì)，幫助你和別人說(shuō)話。建立自信，增強(qiáng)信心，故選A。【59題詳解】考查動(dòng)詞辨析。A價(jià)值；B提高；C指導(dǎo)；D安排。這是一個(gè)極好的方式來(lái)提高你們所有人的英語(yǔ)能力。前文介紹了通用英語(yǔ)課程的教學(xué)內(nèi)容，課堂教學(xué)方法，舉辦活動(dòng)等等，可知任何人在其中學(xué)習(xí)，都會(huì)學(xué)到很多并能提高自己的英語(yǔ)能力。故選B?！?0題詳解】考查名詞辨析。A感情；B想法；C冒險(xiǎn)；D經(jīng)歷。這是一個(gè)極好的方式來(lái)提高你們所有人的英語(yǔ)能力，除了擁有一段夢(mèng)幻般的經(jīng)歷外。結(jié)合全文的介紹，可知接受通用英語(yǔ)課程的教學(xué)，你會(huì)體驗(yàn)不同，教學(xué)形式輕松，多樣化，這是一個(gè)非常好的經(jīng)歷，故選D?？键c(diǎn)：考察記敘文閱讀21.完形填空（共20小題；每小題1.5分，滿(mǎn)分30分） 閱讀下面短文，從短文后各題所給的A、B、C、D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。"A”forAttitudeEnglishwasalwaysmyfavoritesubject.Inmyfreshmanyearofhighschool,Icouldwriteakillercomposition.Inmysecondyear,my36allowedmetogivespellingteststotheclass.Ihadwonderful37ofmyjunioryear.Mrs.Alexander38metositatherdeskandtakeovertheclasswhenshehadtoleavetheroom.OnlymyseniorEnglishclasswas39,aswehadateacherrightoutofcollegewhoexpectedcollege-levelwork.Everystudentreceiveda“C”or“D”gradethefirstquarter.40Englishwasstillmysubject.Igraduatedfromhighschool,41earlyandhadchildren.ConfidentaboutmyEnglish,IoftenhelpedmykidswiththeirEnglishhomework.AndI42longarticlesandbeautifulpoetryasacolumnistforanewspaper.Fifteenyearslater,Iwenttocollege,andbecauseIhadbeenan"A"student,Iremainedan‘‘A”student.I43uptomyownexpectations.Yesterday,I44myhighschoolreportcardswhenIwasreadingoldpapers.Thatbundleofreportcards45backtheolddays.Irememberedsittinginmyadvisor'soffice，explainingthatIhadalwaysexcelledatEnglish,and46thatIdidnotdeservea“D”fromthat47teacherofmysenioryear.Theadvisorwassympatheticbutunabletochangea(an)48Reading49myoldreportcardsrevealedsomethingelsetoo.Iwantedtotorethemorhidethem.Iwasnotan‘‘A”studentinhighschoolEnglish！Somehow,Ihad50myselfofthis，whenthegradesclearlyreflectedan51studentwithanoccasional“A”or‘‘B”butmostly“C”s.HadIliveduptothosegradesand52myselfaccordingtothoseletters，Iwouldhaveneverconfidentlysoughtmywriting53.HadIbelievedinmyearlygradesinsteadofmyself，Iwouldhaveallowedmyfearof54todefeatmyenthusiasmanddamagemycreativity.55，Iviewedmyyoungerselfasan“A”Englishstudent,exceptforthatundeserved“D”.36.A.monitor

B.headmaster

C.classmate

D.teacher37.A.impressions

B.thoughts

C.inspirations

D.memories38.A.approved

B.appointed

C.expected

D.urged39.A.flexible

B.creative

C.disappointing

D.controversial40.A.So

B.But

C.And

D.Or41.A.married

B.worked

C.succeeded

D.progressed42.A.wrote

B.edited

C.read

D.copied43.A.added

B.lived

C.grew

D.went44.A.counted

B.remembered

C.approached

D.discovered45.A.brought

B.turned

C.held

D.kept46.A.reporting

B.guaranteeing

C.complaining

D.recommending47.A.impolite

B.impatient

C.inexperienced

D.independent48.A.grade

B.figure

C.paper

D.entry49.A.out

B.through

C.from

D.into50.A.warned

B.reminded

C.informed

D.convinced51.A.average

B.enthusiastic

C.outstanding

D.awkward52.A.considered

B.defined

C.reflected

D.described53.A.goal

B.dream

C.career

D.enterprise54.A.change

B.risk

C.stress

D.failure55.A.Otherwise

B.Besides

C.Instead

D.Still參考答案：36-40DDBCB

41-45AABDA

46-50CCABD

51-55ABCDC三、閱讀理解22.閱讀理解Everybodyhasoneofthosedayswheneverythinggoeswrong.ThisiswhathappenedtoHarry.Hegotuponemorningverylatebecausehehadforgottentowinduphisalarmclock（鬧鐘）.Hetriedtoshave（刮臉）quicklyandcuthimself.Whenhegotdressedhegotbloodalloverhiscleanshirt,sohehadtofindanotherone.Theonlyothershirtthatwascleanneededironing（熨）,soheironedit.Whilehewasironingit,therewasaknockatthedoor.Itwasthemantoreadtheelectricitymeter.Heshowedhimwherethemeterwas,saidgood-byeandfoundthattheironhadburntaholeinhisshirt.Sohehadtoweartheonewiththebloodonitafterall.Bythistimeitwasverylate,sohedecidedhecouldn’tgotoworkbybus.Hetelephonedforataxitotakehimtowork.ThetaxiarrivedandHarrygotinandbegantoreadthenewspaper.Inanotherpartofthetown,amanhadkilledawomanwithaknifeandwasseentorunawayinataxi.WhenHarry’staxistoppedoutsidehisoffice,apolicemanhappenedtobestandingthere.HesawthebloodonHarry’sshirt,andtookhimtothepolicestation.Hewaskepttill3o’clockintheafternoonbeforethepoliceweresurethathewasnotthemantheywanted.Whenhefinallyarrivedattheofficeataboutfour,hisbosstookalookathimandtoldhimtogoawayandfindanotherjob.16.Harryhad

.

A.aluckyday

B.anunluckyday

C.abusyday

D.agoodday17.Putthefollowingsentencesintocorrectorderaccordingtothepassage.

a.Themanwhoreadtheelectricitymetercame.

b.Harryironedhisshirt.

c.Harrygotbloodalloverhiscleanshirt.

d.Therewasaknockatthedoor.

e.Harryworetheshirtwithbloodonit.

A.a,b,c,d,e

B.b,a,d,c,e

C.b,a,c,d,e

D.c,b,d,a,e18.WhydidHarryweartheshirtwithbloodonit?

A.Hehadonlyoneshirt.

B.Theonlyotherneededironing.

C.Theironhadburntaholeinhiscleanshirt.

D.Hecuthimselfandgotbloodalloverhisshirt.19.Harrywastakentothepolicestationbecause

.

A.histaxistoppedoutsidehisofficeandapolicemanhappenedtobethere

B.therewasbloodonhisshirtandhewasinataxi

C.amankilledawomanwithaknife

D.themurderer(殺人犯)wasseentorunaawayinataxi20.Hisbosstoldhimtogoawayandfindanotherjobbecause

.

A.hehadbeenkeptbythepolice

B.therewasbloodonhisshirt

C.hewaslateforwork

D.hehadkilledawoman

參考答案：16-20BDCBC23.MANYofushavewonderedwhatEarthislikebeneaththesurface.Sohavewritersandscientists.InFrenchnovelistJulesVerne’smasterpieceJourneytotheCenteroftheEarth,explorersgodowntoEarth’scenteranddiscoveramazingwonders.Butinreallife,humanbeingshaven’tevencomeclosetotheplanet’score(核心).Thecoreisover6,000kmdown.Thedeepestholeevercreated,accordingtotheBBC,istheKolaSuperdeepBoreholeinRussia,whichonlygoes12.3kmdown.Sohowdoweknowabouteverythingdownbelowwithoutanysamples(樣本)？OnegoodwaytostartistothinkabouttheEarth’sdensity(密度),SimonRedfernoftheUniversityofCambridgeintheUKtoldtheBBC.“ThedensityofthematerialonEarth’ssurfaceismuchlowerthantheaveragedensityofthewholeEarth,sothattellsusthere’ssomethingthathasgreaterdensity,”Redfernsaid.Thechallengeistofindoutwhichheavymaterialsthecoreismadeof.Andthemainmaterialscientistshavefoundisiron.TheideaisthatwhenEarthformed4.5billionyearsago,alotofironmadeitswaydowntothecore,takingupabout80percentofit.Todayscientistsarestillworkingonfindingoutwhichothermaterialsthecorecouldbemadeupof.Youmightalsowonderhowweknowthesizeofthecore.There’saone-wordanswer:seismology(地震學(xué)).Whenanearthquakehappens,sei