四川省宜宾天立国际学校届高三下学期第二次模拟考试英语试题解析版Word文档格式.docx

四川省宜宾天立国际学校届高三下学期第二次模拟考试英语试题解析版Word文档格式.docx

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fearoffailurekepthimfromclassroomgamesthatotherchildrenplayedexcitedly.He 

seldomansweredquestions—hemightbewrong.Heseldomfinishedhisworkbecauseherepeatedlycheckedwithmetobesurehehadn’tmadeamistake.

Itriedmybesttobuildhisself-confidence.Butnothingchanged 

until 

midterm,whenMaryAnne,astudentteacher,wasassignedtoourclassroom.Shewasyoungandpretty,andshelovedchildren.Mypupils,Donnieincludedher.Butevenenthusiastic,lovingMarywasbaffledbythislittleboywhofearedhemightmakeamistake. 

Thenonemorningwewereworkingmathproblems.Donniehadcopiedtheproblemswithpainstakingneatnessandfilledinanswersforthefirstrow.Pleasedwithhisprogress,IlefthischildrenwithMary.ButwhenIreturned.Donniewasintears.He’dmissedthethirdproblem.

Marylookedatmeindespair.Suddenlyherfacebrightened.Fromthedeskweshared,shegotacanister（小筒）filledwithpencils.

“Look,Donnie,”shesaid.“I’vegotsomethingtoshowyou.”Sheremovedthepencilsandplacedthemonhisdesk.“Seethesepencils,Donnie?

”shecontinued.“TheybelongtoMrs.Lindstromandme.Seehowtheerasersareworn?

That’sbecausewemakemistakestoo.Lotsofthem.Butweerasethemistakesandtryagain.That’swhatyoumustlearntodo,too.”

Shekissedhimandcontinued:

“I’llleaveoneofthesepencilson 

yourdesksoyou’llrememberthateverybodymakesmistakes, 

eventeachers.”Donnielookedupwithloveinhiseyesandjustaglimmer（少许）ofasmile.

The 

PencilbecameDonnie’sprizedpossession.That,togetherwithAnne’sfrequentencouragementandpraiseforevenDonnie’ssmallsuccesses.gradually 

persuadedhimthatit’sallrighttomakemistakes—aslongasyouerasethemandtryagain.

21.WhydidDonnierarelyfinishhiswork?

A.Becauseheseldomansweredthosedifficultquestions

B.Becausehespenttoomuchtimecheckinghisanswers

C.Becausehecouldn’tworktogetherwithhisclassmates

D.Becauseheneverdidhisworkuntiltheverylastminute

22.Theword“baffled”inParagraph3mostprobablymeans.

A.encouragedB.impressedC.satisfiedD.confused

23.WhichofthefollowingwordsbestdescribeMaryAnneassheisshowninthearticle?

A.PatientandinspiringB.Creativeandmodest

C.DeterminedandstrictD.Considerateandproud

24.Thestorywaswrittenmainlyto.

A.telluswhoinfluencedDonniegreatlyB.singthepraisesofMaryAnne

C.givealifelessonaboutfailureD.showushowtouseerasers

B

Elephantshaveimpressedusforcenturies.Theyarebig,clever,andsociable.Butwhatifsomeonetoldyouthattheymayalsoholdthekeytofightingcancer?

Peoplehavebeenwonderingwhyelephantsdonotdevelopcancer,eventhoughtheyhavelifespans（寿命）thataresimilartohumans,livingforaround50to70years.

Nowscientistsbelievetheyknowwhy.AteamattheUniversityofChicago,Ushasfoundthatelephantscarryalargenumberofgenesthatstoptumors（肿瘤）fromdeveloping.Tobeprecise.Theyfound20copiesofananti-tumorgenecalledTP53inelephants.Mostotherspecies.Humansincluded,onlycarryonecopy.

Accordingtotheresearch,whichwasrecentlypublishedontheonlinesciencenetworkBioRxiv,theextracopiesofthegeneimprovedtheanimal’ssensitivitytoDNAdamage.Thisletsthecells（细胞）quicklykillthemselveswhendamagedbeforetheycantoontoformdeadlytumors.

“Anincreasedriskofdevelopingcancerhasstoodinthewayoftheevolutionoflargebodysizesinmanyanimals,”studyauthorDrVincentLynchtoldTheGuardian.Ifeverylivingcellhasthesamechanceofbecomingcancerous,largecreatureswithlonglifespanslikewhalesandelephantsshouldhaveagreaterriskofdevelopingcancerthanhumansandmicedo.Butacrossspecies,theriskofcancerdoesnotshowaconnectionwithbodymass.

ThisphenomenonwasfoundbyOxfordUniversityscientistRichardPetointhe1970sandlaternamed“Peto’sparadox”.Evolutionarybiologistsbelieveitresultsfromlargeranimalsusingprotectionthatmanysmallerdonot,Intheelephant’scase,themakingofTP53isnature’swayofkeepingthisspeciesalive.

Thestudyalsofoundthatwhenthesamegeneswerebroughttolifeinmice,theyhadthesamecancerresistanceaselephants.Thismeansresearcherscouldusethediscoverytodevelopnewtreatmentsthatcanhelpstopcancersfromspreadingorevendevelopinginthefirstplace.

“Naturehasalreadyfiguredouthowtopreventcancer,”saidJoshuaSchiffman,anoncologistattheSchoolofMedicine,UniversityofUtah,US.

“It’suptoustolearnhowdifferentanimalstackle（对付）theproblemsowecanusethosestrategiestopreventcancerinpeople.”

25.Whyareelephantsunlikelytodevelopcancer?

A.Theyhavealargebodysize

B.TheirgenessuffernoDNAdamage

C.Certaingenesintheirbodykillexistingtumors

D.Theycarrymanygenesthatkeeptumorsfromdeveloping

26.AccordingtoDr.VincentLynch,whathasbeenariskintheevolutionoflargeanimals?

A.ExtremeweatherB.Humanbehavior

C.AriskofdeadlytumorsD.Cellskillingthemselves

27.Whatdoestheunderlinedexpression“thisphenomenon”onthesixthparagraphreferto?

A.LargeranimalshaveprotectionfromTP53

B.Theriskofcancerisnotrelatedtobodysize

C.Thelargeranimalsare,thebiggerriskofcancertheyhave

D.Largeranimalssufferthesameriskofcancerassmalleronesdo

28.Wecanconcludefromthelastthreeparagraphsthat.

A.theTP53geneshaveprovenusefulinstoppingcancerinmice

B.dependingonnatureisnotenoughtofightagainstcancer

C.thisnewtreatmentismoreeffectivethanthepresentones

D.humansareexpectedtostopcancerinthenearfuture

C

BrawnNelsonknewhewantedtobeadoctorat8afterheactedasadoctoronaprimaryschoolcareerday.

Hefacedmoredifficultiesthanmanytogetthere;

HisfamilycametoFlorida,USasrefugees（难民）fromHaitiand“hadalmostnothing”.Heworriedabouthowtopayforcollege.

ButNelsongotaheadstart（领先）inhismedicalcareer.

HeparticipatedintheHealthCareersOutreachProgramthataimstohelppoorminoritystudentstogetclosetothemedicalfield.

Atmiddleschool,heattendedclassestaughtbymedicalstudentsfromFloridaAtlanticUniversity.Hedissected（解剖）rats,comparingtheirorganstothosefoundinhumans.

Asahighschooler,heworkedonthesamecadavers（医用尸体）asthemedicalstudents.Healsovisitedtheuniversity’slabandpracticedtreatingpatientsusinghigh-techmodels.

Experienceslikethosecanmakeallthedifferenceforstudentsastheyworktowardmedicalschool,saidNirmalaPrakash,headoftheprogram.

“Thisisnotapipedreamwherethey’retryingtoimagineit,”shesaid.“Thisissomethingthey’velived.”

Now18andheadedtotheUniversityofFloridaonafullscholarship,Nelsonisamodelgraduateoftheprogram,Infouryears,theprogramhasgraduated50students,LikeNelson,eachonehasbeenacceptedtocollege,manywithscholarships.

RandyScheid,anofficialofQuantumthatfunded（资助）theprogram,saidtheprogramwasimportantforthearea.

“Ourcountyisverydiverse.”SaidScheid.“It’simportanttohavedoctorswhocanunderstandtheirpatients’backgrounds.”

Theprogramcanbemeaningfulforindividualfamilies,too.

“Alotofthesekidsarethefirstoneintheirfamilytogotocollege”saidPrakash.“you’rechanginganentiregeneration.”

ForNelson,theexperiencehelpedhim“notwastetime”intryingtogettothecareerhisheartwasseton.

Hesayshecan’twaitforhiscollegelife.

“I’mready,”Nelsonsaid,laughing.“I’mreadytostartawholenewchapterinmylifeandtoseewhereitwillleadme.”

29.WhichofthefollowingisTRUEaboutBrawnNelson?

A.Hehasbeguntreatingpatientsindependently

B.Hehasbeenacceptedtocollegeonafullscholarship

C.HehasbeendreamingaboutbeingadoctorsincehecametotheUS

D.Hetookclassestaughtbyteachersfromamedicaluniversityduringmiddleschool

30.Accordingtothearticle,theHealthCareersOutreachProgram.

A.focusesonhelpingstudentstorealizetheirmedicalcareerdreams

B.aimstohelppoorminoritystudentstogetintotopuniversities

C.teachesstudentshowtomakebetteruseoftime

D.hasgraduated50studentsthisyear,manyofwhomgotscholarships

31.Whyistheprogramimportant?

a.Itcanhelptomakethecountymorediverse

b.Itcanhelpkidsinthecountytolearnmoreaboutcareers

c.Ittrainsdoctorswhohavediversebackgrounds

d.Ithelpstochangethefuturesofsomekidsandtheirfamilies

A.adB.abcC.acdD.cd

32.Whatwastheauthor’spurposeinwritingthisarticle?

A.Tocallonreaderstogivemoneytotheprogram

B.TosharewithreadersNelson’sstoryofstrugglingintheUS

C.TodescribetheHealthCareersOutreachProgram

D.ToshowthatminoritystudentscanfindtheirownidentityintheUS

D

Gettingmorefollowersissomethingweusuallyassociatewithsocialmediaormicromessagingapps,Butsoonwecouldallhaveanewtypeoffollower-aroboticone.

DozensofrobotsandtechnologyfansgatheredinBoston,US,earlierthismonthfortheRoboBusinessconference.Thelatestdevelopmentsintheworldofroboticswereshowntothepublicandthistimethetrendwasrobotsfollowingpeople.