2023年职称英语等级考试模拟题及答案

年职称英语等级考试模拟题（理工类级）2023B第部分词汇选项（第题，每题分，共分）11~15115下面每个句子中均有个词或短语划有底横线，请为每处划线部分确定个意义最为靠近11欧选项J

1.The n u rs e ry brig h t and c hee r fu I.A.plea s ant B.c1e a n C.P ea c efu1D.I a

2.Thi s kind ofmateria1was seldom u se d i n b u i Idin g h o uses dur in g the i ddl eA g es.A.neve rB.rarely C.of t en D.only

3.P e o p Ie f rom many p1ac e s were draw n to t he ci t yb y i tgrowin g ec hed B.carried a ttr a ctedc o n o my.D.push e dA.place d B.showe d C.p o i n ted D.d ec i d

4.Th e s o1dier displ a y e d r emarkable cour a g e i n th e b a ttl e.

5.How d o y ou account for your a b sence from the clas slas tT hu r s dayA.e x plai n B.exam i ne C.c h oose D.expt o hang on to m o st of th a t yo u t h fu1v i g o r even if we do nzt start to diet until o1d ag e.S t ephen S pin d ler and h i s colleaguesfrom th e Univ e rsityo fC aliforn i a at Rive r sidehave fou nd t hat s o me o f an eld e r1y mousesliver genes c a n h e mad e to behave a s the y di d w h en t hemouse was yo u n g sim p1y bylimi t in g its f o o d for four weeks.The g enetic rejuv ena t ionwontreverse otherdamageca u sed by tim e for the mou s e,but c o uldhelp itsliver m e tabolize d ru g s or get r i d of t oxins.Spindlers te a mfed t h r ee mice a no rmaldi e t for t hei r whole I i v es,and f ed anothe r three onhalf-r at i ons.Thr e e m o r e mice were s wi tched fromt he norm a I diet t oha1f-feed for a mo n thwhen they wer e34months o1d—equi valentto a b o u t70human years.Th e resea r c h ers checke d the a c tivity of11,000g enesfrom the m o use1i v ers,and f o und t hat46ch a nge d wit h age in the norm ally fe d mi c e.Th e ch a nges we r e a ssoc i a t e d w i th thi n gs like infla mm a t io nandfree r ad i cal produ c t io n—probabl ybad n e ws for m o usehealt h.In themice th a t h a ddieted nilthe i r1ive s,27of t h o s e46gen e s conti n u ed t obeh a v e like young genes.Bu t th e m ost su r pri s i n gfinding was tha tth e mi c e thatonly s t a rted dieting i n old age a Is ob e nefit e df r o m70p er cen t o f t hese gene cha n g es.a yHub e r Wa r ner fr o mt heNa t i ona1Instit u te onAging ne a rWa s h i“Th i s i s the fir s t i n d i cation that t hese effects kick in p r etty quickly.sN oone yetk nows i fc a Io r i restri c tionwor ks i n p e o pie itdon gtonD.C.e s i n mic e,b utSpin d1e r i h o p e fu

1.The r es att racting and t e mpt ing evidence out t he r e that i tw川w o rk/h e s a ys.I f it doeswo rk inp eople,th e r e might be g oo dre son sfo r r ej uat i n g the1iver.As we get old er,our bo d ie s a re less effic i e nt a tetaboli zi ngdr ugs,f o r exa mple.A b r iefperi o d o f timeo f di e ting,ays Sp i n dler,could b e enoug h to ma k e s u re a dr ug i s ef f ecti vButS pindle r i s nt sure t he t rad e-off i s wor t h it.”The miceg etessd i s ease,t h ey1ive Ion g e r,bu tth e yr eu ngry,he says,ens eeingwhat a diet does,it/s st i11hard t o go to e staur a nt and sayzlSpindl e r h opes we soon wont n ee d to die t at a1I.His c o mpany,LifespaGe n e tics in California,is1o oki ngfo r d rug that h a ve th eef f ects ofc1o ric res t r i ction.o rdi n g to thep a ss ag e,w h ich of the fol1owin g is NO TtrueA.Eat i ng less tha n u sua1m i ght ma k eu slive longer.can onlyca t h a If of tha t\B.w egoon Adiet whe nold,we maykee p h e a1t h y.C.Di e ting migh tn ot b e nee d ed.D.W eha v e t o begin di e tin gsi nc e c h i Idh ood.

32.Why d o e s the auth o r men t ion an eld e rly mouse i np a ragra p h2A.To de s cribe the influe n ce or o1d age o nmi c e.B.To illu s t r ate the e ffe c t o f meagerfoo d on m i ce.C.To tellu s how mic es1ive rgenes behave.D.T oinf o rm us of theproces s of me t a b oli zin g dru gs.

33.W h a t can h e infe r r ed about comp1e t ely norma1ly fe d micementio n e d in th e passageA.They will not e x per i e n ce f re e r a dicalpro duction.B.The yw i II e xperie neemoregene t icre juv e n ati o nin their life t ime.C.The y ha v e mo r eo1d liverg enes t ob ehav e likeyoung genes.

34.According to the aut h or,whi c h of th e following most i n t e rested th e rD.They aremo re I i k ely t o sufferf ro m inflamm a tion.e s earchersA.The mice t h at startedd ieti n gi nold age.B.27of those46o1d gen e s that co n ti nued to b eha v elikeyounggene s.C.Calo r ie re s t r ic tio n tha t works i np eople.D.D i eting thatm a kes sure

35.Accord i a drugis e f fe c t iv e.ng10t he I a s ttwo par a graphs,Spin dler belie v e s tha tA.calo r ie r e s t ricti o n isv e r yimp o rtan tto youngp eo p Ie.B.s eeing the ef fe ct of a d i et,pe o p Iewill lik et o ea t less th a n normaC.diet i ng is not a good met hod togive us h ea1t h an d1ong Ii fe.D.dru gs do not hav e thee ffec t s of c a lorie r e strict ion.第二篇Snowfl ak e sYouve probably hea rd that no two sn owf1ake s are alike.0f cou r s e,nobody h a s e ver c onf irmed that s tat ement b y examining ever yone o f th ee stimated on e s ep ti Ilion sn owflakes t h at d riftto E arth e a c h yea r.Still,Ken n eth Lib b re c ht,a profes s or at theC alifornia Insti t u t eo f Tec hnolo gy,conf i d e n tth a tt he statementis tr u e.Snowflakes arentflaky,says L i b bre c ht.At thei rbasic I e vel,theyre cr y stalli ne.The I a tticeo fe very sno wf1ake is s i x-s i d e d i n sh a pe.T he simp1est tplate ss now cr yst a Is are si x-sided f1aa nd s ix—si ded c o1c esw herethea ir is ex tremely cold an h ei r s p e c i aI beauty when thei r sumns.Such c rystals are common inpla ddry.Snow cr y s t als acquiretimple six-side d s ymmetryb1os s oms.Und e r th e right conditi o n s,ea c ho fth e six cor ne r s o f a crys t al s p rou tsi whatis c aI1ed an arm.Ina matte ro f minu t es,the arms ca n b e come hig h lyornate a nd givethecrystal ast a r1ik eapp ea rance.Several f a ctor si n t h eenvironm e nt affect the sh ap e and growt h rateof a snowc rysta

1.One fa ct o r is hu midity.C r yst a Is gro w fas t er and i nmo rei n t r i cate shap eas humi dity i n ere as es.A secondfa cto r is air temp era tur e.A sno wflakei sb orn when s ev e r al mo I e cu1es o f wat er vapo ri n a c loudI a nd on a speck of dust an dfr e eze to form asimple cry s t aI.As they oung cry s tai b o ps a round i n the clo ud,it pass e s t h roug h ai rp oeke t s ofvary i ng tempe r atu r es.If th e crysta1p as ses th roug hap o ck et of air th atis,say,—15d egree s Ce1si us,i twill g r owquic kI y an dspro u t sixa rmssays L i bb recht.If t he cry st al isthen to sse d int o a wa rmer p oc ket,one about-100C,t hearms tipsw i I1sto pg rowi n g q u ickl yan dform six-sided plat e Ifthe cry stalthendrifts into aneven warmerpocket of a b out-50C,t it s opand bottomwill growmor e quickly than i tssides and become mor e co1umn like in shape.In t he courseof itslife span,a snow-cr ystal mi g htf1utt e r t h rough mnywarmer and colder pockets,acquiri n g acom plicat ed a nd uniqu egrw t h h ist ory.Such ahistory wil1giv eri se to a snowf lake tha ti su n1ikeny oth er.E ac h arm on the sn owflakew i IIlook exactly1ike e v eryother one,but theer ystal川its e If wb eone ofakind.II s ing h i sc oo ling tanks,Libb r echt has Iea med howt o create snowcr ystals o f dif f er e nt s hapes-pl a tes,c o I umns,needIe s,et c.Libb rech t has eve n r efine dhis tec h niqu e s so th at he c anmake crystalsthat1o okhig h1ysim ilarnufa ctu r e id e ntic aI twin sno wflake s.A s1ight dif fe rencei nhumidity and t e mper atu r eca nup sett h egr owthp rofile o facrys tal.

36.What doesPro fesso rLibbrecht belie ve to bet ruet oone a nother.Still,he lac ks thecontroltomaB.Som e bod y hasexami ned al1the snowflakes that fall onEa r th.C.The statem e ntt hat no two sno wflakes are aIi keis conf irm ed.A.No t wo snowflakesa ree xactly t he samein shap e.D.N o neo fth ea bove.

37.W h atdo thesimp1est snowc rystaIslook1ikeA.They havesixcolumns.B.T h ey are fl ak y.C.They are cubic insha pe.D.Th eya resix-sided.

38.What ar et he fact orstha ta ffect t he shapean d gro wthrate ofasnow crystalA.Humi ditya nd temp er at ure.B.Wat er an d falli ngspee d.C.Air and altit ude.D.Both Ban d C.

39.I tcan be felt from thedescri ptio n in the2nd pa ra gra ph that theauthorA.admir estheb ea uty of the snowflakes.B.disl ikes thech a ngi ng growthhi story o fthe snowfl ak es.C.h as a parti cu1a rfeeli ng for tho se flower-like crystals.D.I ikesto com pare snowf lakes t ot he stars i n t he sky.

40.Libb rechtis nota bIe toA.crea t esnowcr ysta1sofdi f ferent s hape s.B.mak ecr ysta1s thatlook simi1ar too neanot h er.C.create snowflakest hat era exa ctlya like.D.re f i ne hi stechniques.日Ford Abandons ect ric Vehic1e sT h eFor dmo t or companys aban donme nt of elec trie cars effec tive1ysigna1sth e end ofthe roadfor thetechnolo gy,ana1ysts say.Ge ner al Motors and Hond a ceas ed p r oducti on of b attery-power ed carsin1999,t ofocus onfu e I c el1andhybrid elect r icgaso1in eengi n es,w hich aremore at tractivet ot heconsume r.F o rd ha snow announce dit wi1I do thes ame.T hree year s ago,the comp anyi ntroduced the Think City two-seater caran dag olfcart called theT HINK orThink Neighhor.I t hoped to sei15,000means only about1,0Oof thec ars have b een produced,and Iess than1,700ca r t sha ve bee na rsea chyear and10,000c a rt s.But aI ackof dema ndUT hebott omlin eis w edont beli e veth att h isi sthe fut u reof enviro nm e nttran s port fo r the mass market,Tim Holmes of F o rd E ur op e soldso farin

2023.T he Th i nkCityhas arange ofonly ab out les and u p to a six-hour batt eryrech arge time.Ge n eral Motors;EV Ielectr ic ve hic1e alsoha daaid on Frida y.zzWe fe elw ehave giv e ne Iectric ourbest shot/T hevery e x pe nsi vebat teries alsomean elect r ic c ars costmuchm oret h an petrol-pow e re da Iternat i ves.An e1ect ricT oyotaRAV4EV vehi clecos t s over$42,000i nt he US,compare dwith ju st$17,000for t hepet roI version.Toyot aan dNi ssan are now t he nlyma jorau to manufact urers top rodu c e el ectric ve hides.“Ther eis a feel ing th at b at tery el ectric hasb een given its cha nee.Fordnow hasto moveon with i t shy bridp rogr am,an dt hatiswhat wewill bejud ging t hem on/Roger H i gman,a senior t ransportcampaign er atUlim i ted rang e,of about100miles.K Fri e nds oftheEar th,t oldthe EnvironmentNews Servic e.Hybri dc arsintroduc ed byToyota and Honda inthe past fewyearshave so1dw e II.Hyb rid en gines off ergreater mil eage thanpetrol-o nly engi nes,and the batter iesrecha rgethemselves.Ford saysi tt hinks suchvehicle swill helpi t meetplan n ed new gui d elines on ve hicle emis sionsin the US.Howe ver,it isnot yetcl ear e xa ctly what thoseguide1in eswi1I permi t.I nJ u ne,G eneralM otors andD a imler Chry sler won acourt in junction,d ela yingb y two years Californ i anlegi slat ionre qu iringcar-makers tooffer100,000zer o-emiss i on andotherI o w-emiss i on vehiclesinthe stateby

2023.C ar manu fac turershop ethe Ie gislation willbe rew ritte nto aII owf or more1ow-emiss i on,rath er thanzer o-emissi on vehicles.

41.What havethe F ordmot orc ompany,Ge neraI Motors andHonda donec one erning electric c ars A.Theyha ve started to produc eelectri c cars.B.They havedone e xten si veres earch on ele ctriccars.C.They havegiv enup producing e1ectr icca rs.D.Th eyhavep roducedth ousandsof electriccars.

42.A ccord ing to Ti mHo1me sofFordEurope,batt ery-pow ere dcaA.wi1I beth emain transpo rtation vehic1es inthe fut ure.B.willnot be themain tra nsport ati onvehicles in the fu ture.C.wi11be good to theenvironment in the futu re.川D.w replac e petrol-pow er edvehicles in thefuture.

43.Wh i ch automanufactu rers are stil1p roducingeIectric vehic1esA.Toyota and Nissan.B.Ge nera1Motors andH onda.C.Ford and Toyota.D.HondaandT o yata.

44.Ac cording totheei g hth paragraph,h ybridcarsA.offerfew er mileagethanpetrol dri vencars.B.run faster thanpetroldri ven cars.C.ru nmo remi Iesthanpet rold rivencars.D.offer moreb atteri estha npetrol drivencars.

45.W hichofth ef ollow ingistr uea bout the hopeofcar manufact urers acco rding tothelast paragraphA.Low-emis sion carsshou Id b e ban ned.B.Only zero-emission cars are allowedto run on motorway s.C.The legis lationwi1I encourag ecar ma kerstop rod ucemoree lec triecars.D.Th e1egisla ti on willallow morelow-emissi onto be produced.

6.A bouto ne qu a rterof the wo r kersinthecou nt ryare employedi nandfactori es.A.third B.four th C.tenthD.fif teenthE.S he was grateful tohim for being sogoo d to her.A.car eful B.hateful C.beautiful D.thankfulF.Th ereare on1y fiveminutes1eft,but theoutc ome ofthe match is stillindo u bt.A.result B.judgement C.est im ati onD.ev ent

9.H eA.sure B.a ngryC.doubtf ulD.is certain that the di ctionar yisj us t wha11want.worri e dA.close B.near C.pastD.s everal

11.What w e rethe con seq uencesof the decisionshe hadmadeA.r eas ons B.re sult sC.causes D.

10.T heI astfew weekshave beenenjoyable.bases第部分补全短文（第题海题分，共分）546~50210下面的短文有处空白，短文后有个句子，其中个取自短文,请根据短文内容将其分别放回565原有位置，以恢复文章原貌Mo b il ePho nesMo bile phones sho uldcarry aIabel i f they pr ov edltobe a da nge rous sourceofra diation,accor ding to Robe rt B e II,a scie nti st.And no moremo bileph onetransmit tert owersshou Idbe bui Itun ti1the long-term he alth effect sof the electro magneticradiat i on they emi taresc ientifical1y evaluated,hesa id.〃N obod ysgo ing tod ropde a dov erni g ht butwe shou1dbe asking formore scientif icinformation,〃Ro b e rt Bell said ata conf erenceonthehealth effe cts oflow_1ev eI radi ation.46A reportwide1y cir cu1ated amongthepu blie says thatu ptonowscientists donotreallyknow enoug htogu arantee therearenoi1I—e ffetsonhumans fromelec tr oma gne tic rad ia tion.Acco rdi ngtoRob ertBell,thereare

3.3mi1lion mo bilephonesin Aus trali aa1oneand theyare incr easin gb y2,000a day.47A swe1I,ther eare2,000transm i t ter tow e rs aroun d Au strn lia,many in hi g hd ensity reside ntiala reas.48The elec troma g netic ra di atio nemitte dfrom thesetower smay havea Ire ad y producedso me harmfuleffectsonthehe althofthe resi dents nea rby.Robert Be1I suggeststh atuntil moreresearchis comp1e tedthe Govern men tshoul dbanc onstructio nofphone towers fromwithin a500metr eradius of sc hoolg rounds,chiIdc arecent res,ho spital s,sp orts playingfie1dsandr esidentia1a reasw ithahigh percen tage ofchil dren.49H eadds thatthereisalso evid encethat ifca ncersuffere rsaresu bjecte dtoelectromagneticwaves thegrowth rateof thedi seasea ccelerates.50Acc ording toR obert BeII,itisreaso nable for thema jortel ephone co mpaniest ofundit.B esides,he also urges theG ove rnment to setupa wide-ranging inquiryinto possibIe h ealth effects.A.H esays thereisemerg ingev idencethat chi1dr enabso rb1ow-lev e1radiati onata ratemore than three timesthat ofad ults.B.By theyear20234itis estimated that Australiaw iIIhave8mil1ion mo b ilephone s:nearly onefor every twop eop1e.C.”If mobilephones arefoundtobedangerous,they sh ouldcarry awarningla beIu ntilpropers hie Idscan bedevise d/hesaid.D.Then whofinances the researchE.For examp1e,Te1str a,Optu sand Voda phonebuild th ei r towerswhe re itis geograph ically suitab1eto them anddisrega rdthe needof thecommu nity.F.The conclu sionis thatmobi1ephonesbrings moreharm than be nefit.第部分:完形填空（第题，每题分，共分）651~65115下面的短文有处空白，请根据短文内容为每处空白确定个最佳选项151Ch ic kenSou pfortheSo ukComfort FoodFights Loneli nessMas hedpotatoes,ma caron iand cheese,may be badforyour arteries.51acc ording toastu dyinP sycho1o gicalS ci ence,the yregood foryour hea rtand

52.The study fo cuses oncomf ort food andhow itma ke speoplefeel.“For me53,food hasaIway sp layedabig roleinmy fam i Iy/says JordanTroisi,agradu atest u de nt attheUn iv ersityofBuffalo,and leadau thor onthe stu dy.The studycame outofthe resear chpr ogramof hisco—authorS hiraGabriel.Ithas54non-human thingsthatmay af feethuman emo tions.Some peoplereduce lonelinessby bo ndingwit htheir55TV show,b u ild ingv irtu a1r elati onshipswi thapo ps ongsinger or Ioo king atp icturesof I o vedo nes.Tro isi and Gabriel wonder edif comfo rt foodcoul dha vethesame effect56ma king peop1et hin koftheir nearest andde arest.In onee xpe riment,inorder tomake57fe e11one1y,theresearc hers had themw rit ef ors ixminutes abo utafigh tw ith someonec1ose tothem.Others were givenan emotionally neu tral wri tin g ass i gn ment.Then,some peopleineach58wrote abouttheex perienceof eatingacomfort foodand oth erswr ote about eati nga newfo od.59,the researchershad particip a nts60qu estio nsabouttheir1eveIs of loneline ss.Wr it ingaboutafi ghtwi thaclos eperson madepeo plefeeI1onel y.But peoplewh owere gener ally61intheirrela tionsh ips wou1d fee1less1one1ybywritingabouta comfort food.〃We h ave foundthatco mfortfo odsare consiste ntlyassociated with tho sec I oseto us.say sTroisi.Z/T hinkin gabout or consumingth esefoods laterth enserv es asa reminderoft hose closeothe rs.〃In62essa ys oncomfort food,man ypeopIe wroteabout the63of e ati ngf ood withfami1y andIn anothe rexper iment,64chieke nsoup inthe1ab made peopIethinkmoreabout reI ationship s,but onlyifthey consideredchi ckensoup tobea comfortfood.This wasa qu estion they hadbeen asked1on gbef oretheexpe riment,a longwit hmany otherquestions,sothey wou1dnt re memberit.“Th roug houtevery ones da ily Ii vesthey exp erien cestress,often associat edwith our65with others,Troi sisays.Com fortfo od Canbean easy remedyforIoneline ss.

51.A.but B.if C.though D.wh iIe

52.A.per sonality B.mo veme nt C.emotion s D.wi

1153.A.pr ivate1y B.useful1yC.aw fu11y D.pe rsonal1y

54.A.looked forB.looked at C.loo ked afterD.looked up

55.A.fav oriteB.trust fu IC.bori ng D.an noy ing

56.A.wit hB.on C.by D.at

57.A.professo rsB.parti ci pantsC.assistan tsD.scientis ts

58.A.g roupB.class C.sec tionD par t

59.A.Pr evious1y B.Forma1ly C.Ini tially D.F inally

60.A.r ememberB.expla in C.r ewrite D.comp1et e

61.A.sadB.sec ure C.shy D.angry

62.A.your B.ou rC.hisD.their

63.A.accid entB.harm C.exper ience D.model

64.A.eating B.exchangin g C.buying D.keeping

65.A.express ions B.estima tion C.coopera tion D.connecti o ns答案1-5ABC BA6-10BDAACBADBA11-15BCAAB16-20CBBED21-25CFABC26—30DBD AC31-35ADAAC36-40CBACD41-45CBEAD46-5051-55ACDBA56-60CBADD61-65BDCADA.know B.forgetC.do ubt D.

12.The ydidnt realize howserious theproblem was.rememb er

13.We shallkeep themoney inasecure place.A.c1ean B.secret0C.di stant D.safe

14.The greatchan gesofthe cityastonished every v isitor to thatcit yA.attack edB.su rpris edC.attr act ed D.intere sted

15.The cityha sdec idedtodoaway with all theoIdbuildi ngsin itscenter.A.getrid ofB.set upC.re pairD.pa i nt第部分阅读判断（第题，每题分，共分）下面时短文后列出了个句子，请216〜22177根据短文时内容对每个句子做出判断:假如该句提供的是对的信息，请选择假如该句提供勺是错误信息，请选择假如该句的信息文中没有提及,A;U B;请选择CoD angers AwaitB abi eswi th Altitud eWomen wholi veintheworlds highestcomm uniti es tendtogivebirtht ounderweig ht babies,anews tudysuggests.Th ese babiesmay growintoadu1tswithahig h riskof heartdise aseands trokes.Res earchhas hintedt hatnewborn sin moun tain communit iesarelig hterthan average.But itwasnt clearwhether this isd uetr edu areced oxyge n Ieve1sat higha Itit u des orbeca usetheir motunder-nouri shed—manypeople wholive athighaltitu dese lati ve1ypoor compa redwith th ose living1ower down.Tofind out more,Di no Giussaniand histeam atCambr id geiv ers ityst udiedthe recordsof400bir ths inB oliv iaduri ng1997I

1998.Th ebab i es were borninboth richand poorare oftwocit ies:La Paz atandS ant a Cr uz.La Paz isthe highestc ity

3.65at

0.k ilometers abovesea Ievel,wh Santis mu chlower,44kilom et ers.Sure enough,Giuss anifou ndthattheerage birthweigh tofbabiesi nLa Pazwas signif icantly lowerthan SantaCruz.Thi swistruein bothhigh and1ow—incomef amiIes.Even babiesb ornto poorf ami liesin SantaCru zwere heaon averagethanbabie sb ornt owealthyf amiliesin1ofty LaP az.“We wereverysurpri s ed by this resu1t/s aysGiussa ni.T heresults sugg estth atba bies bo rnath ighalt itudes are de prive dof2ox ygenb eforebirt h.This maytrigger there leaseor suppr e ssiono fhormones thatregulate gr owthof theunborn chiId/says G i uss ani.His teamal sofo undthat high—alt itudebab ies tendedto have relatively Iarger he adscompa redwiththeirbodies.Th isisproba bI y bec auseafet ussta rved ofoxygen wi11sendox ygenatedblood totheb raininpreferen cetotherestofthebody.G iussaniwa nts tof indout ifsuch babieshavea higherriskofdi seasein Iater life.P eopleborn inL aPaz mig htbep roneto hearttroub1einadulthoo d,for example.Low birthw eig ht isaris kfacto rforco ro naryhe artdi sease.And newbo r nswi thahigh ratioof headsize tobodyweigh tareo ften predisposedto highblood pressureand strokesin later1ife.

16.Accord ing tothepassage,one ofthe reaso nswh ynewbornsin mountaincommunitiesareunderwei ght isthattheirmothers ader—no uris hed.A.Right B.Wron gC.Not mentioned

17.Giu ssanis teammem bers areall Br itishresear chersandprofessors from Cambridge Univ ersity.A.Ri ghtB.Wrong C.Not mentione d

18.G iussani didno te xpectto findthattheweight ofababy had1ittle todo withthefi nanciaIcond itions ofthefamily hewasborn into.A.Rig htB.Wrong C.Not mentioned

19.The we ight ofanew born hastodowith thesup ply ofo xygeneven wh enhewa ssti1I inhismothe rs womb.A.R i ght B.Wr ongC.Not mentioned

20.High-alt itudeba biesh aveheads that are1arger than their bodies.A.Rig htB.Wrong C.No tmen tioned

21.Hi gh-a1titudeb abieshaveIo nger butt hinnerlimbs thanaverage.A.Righ tB.Wrong C.Not menti oned

22.Giuss anihasarriv ed atthecone1us ionthatb abiesinhigh—a1t ituderegions aremore1ikely tohavehearttrouble whentheygrow uP.A.Right B.Wro ngC.Not ment ioned第部分:概括大意与完毕句子（第题，每题分，共分）323-3018下面的短文后有项测试任务⑴第题规定从所给的个选项中为第段每段选223-2662~5择1个最佳标题；

（2）第27-30题规定从所给的6个选项中为每个句子确定1个最佳选项L EDLi ghtin gAn accident a1disc o very anno uncedrecently hastaken LEDlighti ngto anew1eveI,sugg esting it couldsoon offerac heaper,Ionger-la stingalt ernativetothetraditio nal1ightbulb.The breakthrough addstoagrowing trendthatis like1yto eventu a llymakeThoma sEdi sons brigh tinventi onl obs ole te.LE Dsarea1r eadyus edintraf fic1ig hts,f1ashlight s,andarchitect uralIighting.T heyareflexibl eandoperate lessexpens iveIy thantra ditionalii ghti ng.Michae1Bower s,a graduatestuden tat Vanderbi ItU niversity,was justt ryingto makereal1y smal1qu ant um do ts,whi ch arecrystalsgener allyonlyafew nan ometersbig.Q u antum do tscont ain anywhere from100to1,000electrons.Th ey/re easi lyexc itedbundle sof ene rgy,and thesmaller theyare,the moreex cit ed theyg et.E achdot in Bowerspartic ula rbate hwas exce ptionallys mall,containing on1y33or34p airsofatoms.Wh en youshineaIi ghton qua ntum dotsorapply electr icit ytothem,they reac tbypr oducin gtheir own light,normally abri ght,vibra nt color.B utwhenB o wers shined aIa seronhis batehof dots,s omethingunexpe ct edhappe ned.H ewassu rprised whenawh iteg lowcove redtheta bIe.The quanturn do tswere supposedtoemit blueIight4,but instead theywere givingo ffabe autifuIwh ite glow.The nBowers andanother studentg ottheidea to stir thedotsinto polyurethane and coatablue LEDlight bulbwith themix.Th elumpy bulb wasntpretty,but itproduced wh iteIight similartoar egularlig htbu lb.LEDs producetwice as mu chlig htasareg ular60wa11bulb andburn forover

50.000hou rs.The Dep artmentof Ener gyestima tes LED lightin g cou IdreduceU.S.e ner gycons umption forlig hting by29percent by

2025.LEDs dontemit heat,sothey eal so moree ner gyeff icient.An dthey7e muchhardertob reak.Q uantumdotmixtures co uldbe paintedmightbeaonjust aboutany thing ande1ectr ically excitedtopr oducearainbow ofco1ors tincl uding white.tab1e,a wall,oreven afork.T hemain Iightsource ofthef uturewill almostsu relynot bea bulb.It

23.Parag r aph

124.Paragr aph

325.Para graph

526.Para graph6A.LED Lighting IsNot MatureB.LED LightingWill Rep1aceTr aditio nalLighti ngC.A1most Ev erythingCou1d BetheMain Light SourceintheFutureD.LED Ligh ting HasMany Ad vanta gesE.B owersMade anU nexpect ed DiscoveryF.L EDLight BulbsLook Lu mpy

27.Unli ketraditi onal lighting,LEDs donot giveout heatso.

28.Ed isons brighti nventionis likelytobe outdatedbecause.

29.

9.Somethi ng unexpectedha ppened during Bowersexper imentwhen.

30.0v erone qu a rterofenergy con sumption for1ighting couldbe savedby2025if.A.traditional lig htingis Ie ssdurab1eanddeare rB.a1ase rexc itedthe quantum dotsC.Am ericaadoptedLE DsD.g raduatestude nts workhardE.quantum dotmixtures aremagicF.itis moreeffici ent第部分阅读理解（第题，每题分，共分）431〜45345下面有篇短文，每篇短文后有道题请根据短文内容，为每题确定个最佳选项351第一筲弟扁E atto LiveAmeager di etmay giveyou hea1th andlong life,but is notmuch funandit mightnoteven be nec essa ry.We maybeable。