《新目标大学英语》课件-新目标大学英语

Unit14NewLifestylesinChinaTheRiseofCar-sharinginChina共享经济正在日益影响中国人的生活。从共享充电宝、共享单车发展到共享汽车。虽然

存在种种弊端,但不可否认这些给人们的生活带来了便利。WiththefastdevelopmentofeconomyinChina,peoplearebecoming

wealthy.Therearemoreandmoreprivatecarsanditseemsunlikelythatthe

country

sgrowthincarownershipwillstopanytimesoon.However,severe

1airpollutionandtrafficcongestion2haveledseverallargeChinesecitiesto

takeactionstostem3therisingtideofprivatecars.Forexample,sixbigcities

includingBeijing

haveimplemented4licenseplatecontrolpolicies.Othermanagementstrategiessuchascongestionpricingarewidelyadopted

tostoptherisingtideofprivatecars.Aspartofthestrategiestoachievesus-

tainable5urbanmobility,car-sharingcanhelpreducethenumberofcarsin

Chinesecitiesandmeettheincreasingdemandforpersonalmobilityofthemiddleclass①.Car-sharing,oneofthefastestgrowingurbanmobilityinnovations6world-

wide,didnotexistinChinauntil2009,butitisquicklybecomingamain-

stream7inChinesecities.Theglobalcar-sharingmarkethasanestimated

valueof1billionUSAdollars,with272%growthinthenumberofcar-shar-

ingvehiclesbetween2006and2012.The

rise

of

station-based

car-sharing

in

ChinaCar-sharingisstillemerging8inChina,andin2012therewereonlytwocar-sharingoperators(CSOs),withatotalof39vehiclesinChinesecities.To-

day,thecar-sharingnetworkinChinahasgrowntoatotalof1,000vehicles

withfiveactiveoperatorsinBeijing,Hangzhou,Wuhan,Shenzhenand

Changsha.Thecomposition9ofCSOsinChinahasevolvedfromdomestic

start-upsthatoperateindependentlyfromthegovernmentorestablished

rentalcarcompaniestogetherwithmunicipal10governments,foreignand

domesticvehiclemanufacturers②.AmongtheseCSOs,EduoAutoispopularwithcollegestudentsandeven

implementsamembershipsystem,whileWeigongjiaoandE-carreceivegovernmentsupportandoperateonlyelectricvehicles.Weigongjiao,which

means“mini-bus”,creativelyusesvendingmachines11-likeparking

garageswithelectricvehiclecharginginfrastructure12.Car2Goisthefirstcar

-sharingprogramsupportedbyaforeignequipmentmanufacturer(OEM)in

China.The

emergence

of

private

peer-to-peer

car-sharingPeer-to-peer13(P2P)car-sharinghasexistedinChinaforashortperiodof

timethoughithasbeenoperatinginNorthAmericaformorethanadecade.

P2Pcompaniesprovideaplatform14formemberstorentvehiclesownedbyothermembersinthenetwork.Car-sharingexpertslikeZipCarfounder,

RobinChase,regardP2Pcar-sharingasthenextrevolutioninthecarrental

industry,asitcancheaplymobilize15unusedresourcestoprovidevehicleac-

cessacrossawidearea.TwoofthemostnotableP2PcompaniesinChina

arePPZucheandATZuche.What

role

will

car-sharing

play

in

Chinese

cities

in

the

future?Therearemultiple16challengesfacingthecar-sharingindustryinChi-na.Culturalpreferencetowardscarownershipmaymakecar-sharingless

appealing17inChinathaninothercountries.ItmaytaketimeforCSOsto

developanoperationalscheme18thatsuitsChinesecities,andforcityleaders

tocreatesupportivepoliciessuchason-streetparkingforsharedvehicles.

Somelocalgovernmentshavesupportedelectricvehiclecar-sharingpro-

grams,thoughmostgovernmentsaregenerallyunawareofcar-sharingasa

potential19sustainabletransportsolution.BusinessesinChinaareinnovatingtocreatelocallyviablevehiclesharing

programsthatmayreshape20privatevehicleusageinthelargestvehiclemarketintheworld.Astheindustryevolves,supportfromcitygovernments

throughpoliciessuchasdedicatedparkingforsharedvehiclesandexemp-

tion21tovehiclelicenserestrictionswillbevitaltothegrowthoftheindus-

try.ItisalsoimportantforCSOsandresearcherstodemonstratethebenefits

ofcar-sharingservices.Ifmoregovernmentscanprovideanaccommodating2

2policyenvironment,theriseofcar-sharingprogramsinChinacouldbepart

ofastrategytomakecitiesmoresustainableandlivablewhileminimizing

carownership.——http://thecityfix.com/blog/on-the-move-car-sharing-scales-up-heshuang-zeng(613words)Notes①Aspartofthestrategiestoachievesustainableurbanmobility,car-

sharingcanhelpreducethenumberofcarsinChinesecitiesandmeetthein-

creasingdemandforpersonalmobilityofthemiddleclass.共享汽车是实现中国城市交通可持续发展的远大战略之一,有助于减少城市汽车数量,同时满足中产阶级不断增长的个人出行交通需求。②ThecompositionofCSOsinChinahasevolvedfromdomesticstart-

upsthatoperateindependentlyfromthegovernmentorestablishedrentalcar

companiestogetherwithmunicipalgovernments,foreignanddomesticvehi-

clemanufacturers.在中国,共享汽车运营商的构成从国内新兴私营企业或知名租车公司发

展成为政府和国内外汽车制造商共同运营。ExercisesⅠ.There

are

five

questions

or

unfinished

statements

based

on

the

passage.

For

each

of

them

choose

the

best

answer

from

the

four

choices

marked

A,B,

C

and

D.1.Whichofthefollowingproblemismentionedasaresultoftherising

numberofprivatecarsinChina?A.Over-consumptionofenergy.B.Higherinfrastructurecost.C.Morecaraccidents.D.Increasingairpollution.2.Whichofthefollowingstatementsistrueaboutthecar-sharingmarketin

China?A.Thecar-sharingmarketinChinaisquitemature.B.Thenumberofcar-sharingvehiclesbetween2006and2012in-

creasedby272%inChina.C.Thereareatleastfiveactivecar-sharingoperatorsinChina.D.Car-sharingoperatorsinChinarunindependentlyfromgovernment.3.Whichofthefollowingstatementsisnotthechallengefacingthecar-shar-

ingindustryinChina?A.InChineseculture,peopleprefertohavetheirowncars.B.Sharingvehiclescannotbemaintainedintime.C.Dedicatedparkingisnotavailableforsharingvehicles.D.Mostgovernmentsdon

trealizethatcar-sharingcanhelpsolve

transportproblems.4.Theunderlinedword“viable”inthelastparagraphmostprobably

means

.A.feasibleB.reliableC.visibleD.possible5.What

stheauthor

sattitudetowardsthefutureofcar-sharingindustryin

China?A.Optimistic.B.Pessimistic.C.Doubtful.D.Neutral.Ⅱ.Fill

in

the

blanks

in

the

following

sentences,using

the

words

or

phrases

given

below.Change

the

form

where

necessary.

bevitaltounlikelysevereimplementsustainableemergemultipleappealingpotentialinnovate1.Sheissufferingfrom

depression.2.Cyclingisatotally

formoftransport.3.Theattacklefthimwith

woundstohisupperlimbs.4.Weareawareofthe

problemsandhavetakeneveryprecau-

tion.5.Goodfinancialaccounts

thesuccessofanyenterprise.6.SpendingtheholidaysinBritainwasn

taprospectthatIfoundparticular-

ly

.7.Thegovernmentpromisedto

anewsystemtosolvethefinan-

cialproblem.8.Thecompanyhassuccessfully

newproductsandservices.9.Itis

thatthethieveswillbecaught.10.Nonewevidence

duringtheinvestigation.Ⅲ.Translate

the

following

Chinese

sentences

into

English.1.我们大家都必须采取行动来保护我们的生活环境。2.这种可持续发展不仅指经济的可持续发展,而且更为重要的应该指社

会的可持续发展。3.那家公司希望能够挺进有大量可用车辆的社区,尽可能将所有的车辆

发展成共用车。4.该研究所可以对一些问题进行研究,这些问题可能会促进一带一路的

发展效率。SectionAIn

this

section,you

are

going

to

read

a

passage

with

ten

statements

attached

to

it.Each

statement

contains

information

given

in

one

of

the

paragraphs.I-

dentify

the

paragraph

from

which

the

information

is

derived.You

may

choose

a

paragraph

more

than

once.Each

paragraph

is

marked

with

a

letter.WhyChinaLeadstheWorldinMobilePaymentsA)Forconsumers,itisclearthatmobiledevicesareamainstay

(支柱)inourdailylives

fromconnectingwithfriendsoversocialmedia,makingdinnerreservations,researchingandshar-

ingproductrecommendationstoviewingonline.Now,itisthe

explosivegrowthofmobilepaymentsthatistransformingour

financiallives,andChinaistakingthelead!Witharecordof$1

2.8trillioninmobilepaymentinChina,transactionsfromJan-uarytoOctoberin2017surpassestheUSAwhosetransactions

wereonly$49.3billion.Butwhy?Chinese

consumers

embrace

mobile

paymentsB)UnliketheUSAmarketwhereconsumershavebeenhesitanttoabandon

theircreditcardsanddebitcards,Chineseconsumersareadoptingcashless

ande-commercemethodsatafasterratethantherestoftheworld.They

havebeenfastadoptersofonlineretail,financialandon-demandservices

andprefertheconvenienceofmobilepayments.C)In2016,Chinahad731millionInternetusers,morethanthetotalusersof

theEuropeanUnionandtheUnitedStates.NearlyoneinfiveInternetusers

inChinareliesonmobilepayment,comparedwithjust5%intheUnited

States.InChinatheshareofInternetuserswhomakemobilepaymentsis

around68%,comparedwithonlyaround15%intheUnitedStates.D)WhereasUSAconsumersareconcernedaboutmobilesecurityandeven

manymerchantsseemconfusedaboutacceptingmobilewallets,China

se-

commerce$marketisdrivenbyitsmobile-firstconsumerbehavior.Accord-

ingtoaPWCreport,31%ofChineseconsumerswillclickonanadthatisrelevanttothemversus16%globally.Chinesepeopleappreciatetheconve-

nienceandeaseofpaymentthatcomewithmobilewalletsmorethanAmeri-

cansdo.China

s

digital

infrastructure

supports

mobile

paymentsE)Chinaisnowthelargeste-commercemarketintheworld.Itaccountsfor

morethan40%ofthevalueofworldwidee-commercetransactions,upfrom

lessthan1%aboutadecadeago.Chinahasalsobecomeamajorglobalforce

inmobilepayments.Thetransactionvalueis11timesthatoftheUnited

States.F)TheChinesegovernmentisplayinganactiveroleinbuildingaworld-

classinfrastructuretosupportdigitizationasaninvestor,developer,andcon-

sumer.Chinaisbeingtransformedintoaworlddigitalleaderaccordingtothe

McKinseyGlobalInstitute.G)Ledbythepopularmobileapps,AliPayandWeChatPay,Chinesecon-

sumersgostraightfromcashtosmartphones,skippingtheuseofcreditcards

anddebitcards.Twooftheworld

smostvaluablecompaniesareAlibaba

GroupHolding,LtdandTencentHoldings,Ltdrespectively.Byusingmo-

bilepayments,peopleinChinapayforwhattheybuythroughadigitalsys-temthatcombinessocialmedia,commerce,andbanking.H)Incontrast,theUnitedStatesdependsonbanksformostnon-cashpay-

ments,andallaretiedtoconsumers

bankaccounts.Withmultiplefirmsin-

volvedintheprocess,frombankstocreditcardcompaniestopaymentpro-

cessors,thecostoftransactionsgoesupwiththeirhandlingandprocessing

fees.WalletsandpaymentsystemslikePayPal,ApplePay,andGooglePay

arealsoconnectedtothissystem,butneithercommandsthemarketthatAli-

PayandWeChatPaydoinChina.Asaresult,USAmerchantslosesubstan-

tialamountsofmoneytothesefeesonpurchasesmadewithcardsormobilepaymentsintheUSA.I)IfthirdpartyappsweretotakeholdintheUSAatthesamerateasinChi-

na,bankswouldlose$43billiondollars.It

snowonder,Bloombergreport-

ed“China

sPaymentAppsGiveUSABankersNightmares(噩梦)”.USA

mobile

payment

opportunityJ)TheUSAreceivedsome2.6millionChinesevisitorsin2015,accordingto

NationalTravelandTourismOffice.Thenumberisexpectedtoreach6mil-

lionby2021,accordingtotheUSATravelAssociation.ChinesetouristsandstudentsintheUSArepresentasignificantmarketopportunityforChina

s

majormobilepaymentapps.K)Itisestimatedthat61%ofglobalmobilepaymentusersthisyearwillbe

fromChina,accordingtoe-Marketer,withAliPayandWeChatPayhaving5

20millionand1billionmonthlyusersrespectively.Mobilepaymentac-

countsforabout41%ofalltransactionsabroad.Nielsenfoundthatover90%

ofChinesetouristswouldusemobilepaymentoverseasifoverseasmer-

chantssupportedtheuseofChinesemobilepaymentbrands,andthiswould

furtherincreasetheirdesiretoshop.This,alongwiththesignificantgrowthinpercapita(人均)incomeofresidentsinChinaandtheincreasingnumber

ofChinesecitizenstravelingoverseas,makesUSAmerchantsthinkthatac-

ceptingChina

smobilepaymentsissmartfortheirbusinesses.AliPay

targets

USA

marketL)AlipayenteredtheUSAmarketin2016.TheyannouncedadealonMay8

th,2018withAtlanta-basedpaymentprocessorFirstDataunderwhichmore

than4millionUSAmerchantswillacceptpaymentviatheservice.Thatputs

AliPayinthesameleagueasApplePay,whichisat4.5million.However,

theprimarytargetisnotAmericans.It

sthegrowingnumberofChinesetouristsandstudentsintheUSA.M)AliPayrecentlyalsopartneredwithFreedomPay,agloballeaderinpro-

tectedcommercetechnologyandakeynotespeakerattheAnnualMobile

PaymentsConference2018.ThepartnershipwillprovideAlipaywithnew

customersfocusingonthetravelandhospitalitysectorandanabilitytocapi-

talizeonChinesetourists.Meanwhile,China

sothermobilewalletgiant

Tencent

sWeChatPay

willfightAlipayfuriouslyfortheAmericanmarket.——https://mobilepaymentconference.com/why-china-leads-the-world-in-mobile-payments(907words)

1.WithChinesepeopleintheUSAasitstargetusers,Alipayopened

uptheAmericanmarket.

2.Americanconsumersareunwillingtogiveupusingcreditcards

anddebitcards.

3.TheinvolvementofmanycompaniesintheprocessofpaymentcausesthetransactionstobemoreexpensiveintheUSA.

4.Chineseconsumersgiveprioritytotheuseofmobilepayment,

whichpromotesitse-commercemarket.

5.WithmoreandmorevisitorsandstudentsgoingtotheUSA,Ali-

PayandWeChatPayforeseealargermarketshare.

6.ThenumberofInternetuserswhorelyonmobilephonesinChina

isfourtimesaslargeasthatintheUSA.

7.AlipayandWeChatPaywillhavefiercecompetitionfortheUSA

market.

8.Peopleusemobilephonestocontactfriends,bookdinnersandpay

fortheirpurchases.

9.Chinaachievedagrowthofover39%inthevalueofe-commerce

transactionsinthepasttenyears.

10.IfChinesemobilepaymentsareacceptedoverseas,merchants

therewouldmakegreaterprofits.Time

required:15minutesTime

used:

minutesSectionBIn

this

section,there

is

a

passage

with

ten

blanks.You

are

required

to

select

one

word

for

each

blank

from

a

list

of

choices

given

in

the

work

bank.Read

the

passage

through

carefully

before

making

your

choices.You

may

not

use

any

of

the

words

in

the

bank

more

than

once.Over60%ofChinesePeopleEatTakeoutsatLeastTwiceaWeekAccordingtoasurveyof2,005intervieweesbyChina

Youth

Daily,64.9%ofthemeattakeoutfoodatleasttwicea

week,while52.4percentconsiderthefoodtobeharmful.Atotalof55.6%admitit

shardtostop1

takeoutfood,and

63.8%hopethequalitycouldbeimproved,especially2

hygieneforthecookingoilandingredientsused.WangWei,a

graduateofRenminUniversityofChina,eatstakeoutfoodev-

erynoonaswellasweekendevenings.“It

sconvenienttoor-

dertakeoutfood.Therearemanytypesoffoods3

andthepriceisnothigh,”hesaid.Whenintervieweeswereaskedaboutthe4

ofeatingtake-

outfood,4.7%saidtwoorthreetimesaday,14.4%saidoncea

day,45.8%saidtwoorthreetimesaweek,and13.9%saidonce

aweek.Only18.6%oftheintervieweeseattakeoutfood5

,and2.6%seldomeatitatall.Thesurveyshowsthatpeoplehavedifferentreasonsforchoos-ingtakeoutfood.Atotalof55.9%ofthemhave6

sched-

ules,36.7%considertakeoutfoodcheaperthanfoodinarestau-

rant,and30.9%thinktherestaurantsoutsidearetoofaraway.Meanwhile,28.9%don

tknowhowtocook,22.2%likeeating

andwatchingTVshowstogether,and9%choosetakeoutfood

becauseitwas7

byfriends.However,manyintervieweessaidtheyhave8

aboutthequalityoftakeoutfood.Inthesurvey,55.6%ofintervieweesadmittedthatit

sdifficult

to9

eatingtakeoutfood,sopeople10

expectmore

fromthequalityofwhattheyorder.——http://www.myzaker.com/article/5abcac5077ac645fca429be

2(278words)Time

required:8minutesTime

used:

minutesSectionCIn

this

section

there

is

a

passage

followed

by

some

questions

or

unfinished

statements.For

each

of

them

choose

the

best

answer

from

the

four

choices

marked

A,B,C

and

D.HongKong

sHigh-speedRailTakesoffAround75,000passengerstravelledthroughthecontroversial

jointcheckpoint,withover42,000mainlandvisitorstravelling

toHongKong,whilearound33,000HongKongersjourneyed

overtheborder.The141-kilometre-longrailway,including26kilometersinHongKongisakeypartofthenationalhigh-speedrailway

network.ThetrainfromtheWestKowloonStationoverthe

bordertoChinaontheGuangzhou-Shenzhen-HongKongEx-

pressRailLinktookoffsuccessfullyonSunday,September23

rd,2018.Therailprojectcost10.8billionUSAdollars.ItconnectsHong

KongwithChina

s25,000-kilometre-longnationalhigh-speed

railnetworkforthefirsttime.TheHongKongExpressRailLinkwilltravelthrough44stationsacrossChina

shigh-speed

railnetworkincludingGuangzhou,ShanghaiandBeijing.Pas-

sengerssaythattheyhaveexperiencedsomenaggingissuesat

ticketcountersintheWestKowloonStation,aswellasconfu-

sionoverbaggagesizelimitsandinadequatelysignedcompart-

ments.Despitethesesmallhiccups,mostpassengersreporteda

smoothjourney.Authoritieswerealsoquicktoreacttoprob-

lems.Forexample,whenpassengersfacedlengthyqueues,twomorecountersweresubsequentlyaddedonMondaytoalleviate

crowdingissues.Togivepassengersevenmorereasonstosmile,HongKong

DisneylandResortalsoopenedthe“MagicGateway”Guest

ServiceCenterattheWestKowloonStationonthesamedayto

offerguestsaseriesofservicesuniquetoDisney,suchasin-

towncheck-ins,baggagetransfersandhotelreservations.Overall,thejourneywasheraldedasuccessbyallthelawmak-

ersonboard,includingCarrieLam,chiefexecutiveofHong

Kong,whosaid,“Inotetherewerestillsometeethingprob-

lems.Butforsuchalargeinfrastructureproject,especiallya

cross-borderone,notallproblemscanbedealtwithbyusalone.

MTRstaffwillreviewandseewhatimprovementscanbemade

infuture.”Trainswillrunatmaximumspeedof200kilometersperhourandconnectsHongKongwithGuangzhouSouthinjust48

minutes.Itisexpectedthatmorepassengerswilltravelsouth

fromthemainlandtoHongKong.Intermsofpricing,asecondclasstickettoShenzhenisHK$8

6,GuangzhouatHK$247,andBeijingatHK$1,237.LinkingHongKongwiththegreaterbayarea,where68million

peoplelive,createsapotentialGDPof1.5trillionUSAdollars.Thelinkwillalsobring270millionpeopletoHongKong,help-

ingthecityachieveitsgoalof60millionarrivals.——http://page.renren.com/601318315/note/842358082(393words)1.Whichofthefollowingwastheproblemencounteredbythe

Guangzhou-Shenzhen-HongKongExpressRailLink?A.Itwastoocrowdedattheticketcountersbecauseofthe

lengthyqueues.B.Passengerscomplainedthattheticketsweretooexpensive.C.Passengerswerenotsurewhethertheirbaggagewastoo

largetobetaken.D.Therewerenotenoughseatsonthetrain.2.WhatdidHongKongDisneylandResortdotosatisfypassen-

gers?A.Passengerscouldhavetheirbaggagesentanywhere.B.Ithelpedpassengersbookhotels.C.Passengersweretreatedwithsmiles.D.Ittookpassengerslesstimetocheckinhotels.3.Theunderlinedword“teething”inparagraph5mostprob-

ablymeans

.A.disgustingB.messyC.complicatedD.initial4.Whichofthefollowingstatementsistrueaccordingtothe

passage?A.ThetripfromHongKongtoGuangzhouSouthtookonly48minutes.B.Comparedwiththenumberofpeopletravelingfromthe

mainlandtoHongKong,morewilltravelintheoppositedirec-

tion.C.TrainsleaveandarriveatKowloonStation.D.TheticketpricefromtickettoBeijingisHK$247.5.WhatcanbethebenefitofHongKong

shigh-speedrail?A.ItcancreateapotentialGDPof1.5trillionUSAdollarsfor

China.B.Therewillbe68millionpeopletravelingtothemainland.C.Therewillbe270millionpeopletravelingtoHongKong.D.HongKong

stargetofhaving60milliontravelerscanbere-alized.Timerequired:8minutesTimeused:

minutesUnit15SportsHowExerciseCanStrengthentheBrain随着生活水平的提高,体育锻炼已成为人们生活的重要部分。可是您知道锻炼除了能增强

体质外,还能强健大脑吗?Canexercisemakethebrainmorefit?Thatabsorbing1

questioninspiredanewstudyattheUniversityofSouthCaroli-

naduringwhichscientistscollectedmiceandlethalftorunfor

anhouradayonlittletreadmills2,whilethereststayedintheir

cageswithoutexercising.Pastexperimentshaveshownpersuasively3thatexercisestimu-

latesthebirthofnewmitochondria4inmusclecellsandim-

provesthevitality5oftheexistingorganelle6.Thisupsurge7inmitochondria,inturn,hasbeenlinkednotonlytoimprovements

inexerciseendurance8buttoincreasedlongevityinanimalsand

reducedriskforobesity,diabetes9andheartdiseaseinpeople.It

isaveryeffectivecellular10reaction.Braincellsarealsofueledbymitochondria.Butuntilnow,no

onehasknownifasimilarresponsetoexerciseoccursinthe

brain.Likemuscles,manypartsofthebraingetarobust11physiologi-

calworkout12duringexercise.“Thebrainhastoworkhardto

keepthemusclesmoving”,saysJ.MarkDavis,aprofessorof

exercisescienceandseniorauthorofthenewmousestudy.

Scanshaveshownthatmetabolic13activityinmanypartsofthe

brainrisessharplyduringworkouts,butitwasunknown

whetherthoseactivebraincellswereactuallyadaptingand

changing.TheSouthCarolinascientistsexercisedtheirmiceforeight

weeks.Attheendofthetwomonths,theresearchershadbothgroups

completearuntoexhaustion14onthetreadmill.Notsurprising-

ly,therunningmicedisplayedmuchgreaterendurancethanthe

unexercised.Theylastedonthetreadmillsforanaverageof126

minutes,versus74minutesfortheunexercisedanimals.Moreinteresting,though,waswhatwashappeninginsidetheir

braincells.Whenthescientistsexaminedtissue15samplesfrom

differentpartsoftheexercisedanimals

brains,theyfound

markersofupsurgingmitochondrialdevelopmentinallofthe

tissues.①Somepartsoftheirbrainsshowedmoreactivitythan

others,butineachofthesamples,thebraincellsheldnewborn

mitochondria.Therewasnocomparableactivityinbraincellsfromtheunex-ercisedmice.Thisisthefirstreporttoshowthat,inmiceat

least,twomonthsofexercisetraining“issufficientstimulusto

increasemitochondrialbiogenesis16”,Dr.Davisandhisco-au-

thorswriteinthestudy.Thefindingisanimportant“pieceinthepuzzleimplyingthat

exercisecanleadtomitochondrialbiogenesisintissuesother

thanmuscles”,②saysDr.MarkTarnopolsky,aprofessorof

medicineatMcMasterChildren

sHospital.Themitochondrialincreaseintheanimals

brainshasimplica-

tionsthatarewide-rangingandencouraging“Thereisevi-

dence”fromotherstudies“thatmitochondrialshortageinthe

brainmayplayaroleinthedevelopmentofneurodegenerative17

diseases,”Dr.Davissays.“Havingalargerstorageofmito-

chondriainyourbraincellscouldprovidesomebuffer18against

thoseconditions,”hesays.Moreimmediately,Dr.Davisspeculates19,reenergizedbraincellscouldbecomemoreresistanttofatigueand,sincebodily

fatigueispartlymediated20bysignalsfromthebrain,allowing

youtowithstandmoreexercise.③Ineffect,exercisingthebody

maytrainthebraintoallowyoutoexercisemore,amplifying

thebenefits.Revitalizedbraincellsalso,atleastpotentially,couldreduce

mentalfatigueandsharpenyourthinking“evenwhenyou

re

notexercising,”Dr.Davissays.Ofcourse,“mousebrainsarenothumanbrains,”Dr.Davis

says.“But,”hecontinues,“sincemitochondrialbiogenesis

hasbeenshowntooccurinhumanmuscles,justasitdoesinan-

imalmuscles,itisareasonablespeculationthatitoccursinhu-

manbrains.”——http://dipmat.math.unipa.it/~grim/EBalderas.PDF(582words)Notes①Whenthescientistsexaminedtissuesamplesfromdif-

ferentpartsoftheexercisedanimalsbrains,theyfoundmarkers

ofupsurgingmitochondrialdevelopmentinallofthetissues.在检测经常运动的动物大脑不同部位的组织样本时,科学家

们发现有迹象表明所有组织中的线粒体成长迅速。②Thefindingisanimportant“pieceinthepuzzleimply-

ingthatexercisecanleadtomitochondrialbiogenesisintissues

otherthanmuscle”…这一发现是解开谜团的重要线索,“表明锻炼不仅有利于线

粒体在肌肉内生成,也能使其在组织中形成”……③Moreimmediately,Dr.Davisspeculates,reenergized

braincellscouldbecomemoreresistanttofatigueand,sincebodilyfatigueispartlymediatedbysignalsfromthebrain,al-

lowingyoutowithstandmoreexercise.紧接着,戴维斯博士推测由于人体疲劳感部分由大脑信号来

调节,因此脑细胞一旦重获能量,便能抵抗更多疲劳感,从而能

承受更大的运动量。ExercisesⅠ.There

are

five

questions

or

unfinished

statements

based

on

the

passage.For

each

of

them

choose

the

best

answer

from

the

four

choices

marked

A,B,

C

and

D.1.Whatisthepassagemainlyabout?A.Scientistsconductedanexperimentonmiceandprovedthatexercisescan

notonlyimprovehumanexerciseendurancebutalsoreducementalfatigue.B.Thedifferencebetweenpastexperimentsonmiceandtherecentstudy

conductedbyscientistsinUniversityofSouthCarolina.C.Scientistsconductedanexperimentonmiceandspeculatedthatexer