【单选题】Everyone in a particular society recognizes social roles: father, mother, child, teacher, student, police officer, store clerk, doctor, judge, political leader, and so on. Every culture expects certain types of behavior from people who play certain social roles. Anyone occupying a given position is expected to adopt a specific attitude. A store clerk is expected to take care of customers patiently and politely, and a judge is expected to make wise and fair decisions about laws.
Informal social roles are not always easy to recognize, but can be identified with careful research. They are key indicators of a group‘s health and happiness. Within the family, one informal role is the family hero, the person who defines integrity and upholds family morality. Others are the family arbitrator, the person who keeps the peace, and the family historian, often a grandparent, who relays valuable cultural information that maintains both the family and the larger society. And finally, there is the family friend, the person who provides comfort and companionship to the family members with emotional needs.
1.Why does the author mention a store clerk and a judge in paragraph 1?
A. To give examples of people who hold positions of respects.
B. To explain why social roles are important to a society.
C. To illustrate the behavior required of certain social roles.
D. To compare the responsibilities of two different occupations.
2.Why does the author use the term key indicators in discussing informal social roles?
A.To identify the most important type of social roles.
B.To explain how to identify informal social roles
C.To point out that informal roles are unique to families
D.To emphasize the value of informal roles to a group
Informal social roles are not always easy to recognize, but can be identified with careful research. They are key indicators of a group‘s health and happiness. Within the family, one informal role is the family hero, the person who defines integrity and upholds family morality. Others are the family arbitrator, the person who keeps the peace, and the family historian, often a grandparent, who relays valuable cultural information that maintains both the family and the larger society. And finally, there is the family friend, the person who provides comfort and companionship to the family members with emotional needs.
1.Why does the author mention a store clerk and a judge in paragraph 1?
A. To give examples of people who hold positions of respects.
B. To explain why social roles are important to a society.
C. To illustrate the behavior required of certain social roles.
D. To compare the responsibilities of two different occupations.
2.Why does the author use the term key indicators in discussing informal social roles?
A.To identify the most important type of social roles.
B.To explain how to identify informal social roles
C.To point out that informal roles are unique to families
D.To emphasize the value of informal roles to a group
【单选题】looking At thEAtrE history
onE oF thE primAry wAys oF ApproAChing thE grEEk thEAtrE is through ArChEology, thE systEmAtiC stuDy oF mAtEriAl rEmAins suCh As ArChitECturE, insCriptions, sCulpturE, vAsE pAinting, AnD othEr Forms oF DECorAtivE Art.
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sErious on-sitE ExCAvAtions BEgAn in grEECE ArounD 1870, But w.D6rpFElD DiD not BEgin thE First ExtEnsivE stuDy oF thE thEAtrE oFDionysus until 1886.
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sinCE thAt timE, morE thAn 167 othEr grEEk thEAtrEs hAvE BEEn iDEntiFiED AnD mAny oF thEm hAvE BEEn ExCAvAtED、
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nEvErthElEss, thEy still Do not pErmit us to DEsCriBE thE prECisE AppEArAnCE oF thE skEnE (illustrAtions printED in Books ArE ConjECturAl rEConstruCtions), sinCE mAny piECEs ArE irrEvoCABly lost BECAusE thE BuilDings in lAtEr pErioDs BECAmE sourCEs oF stonE For othEr projECts AnD whAt rEmAins is usuAlly BrokEn AnD sCAttErED、
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thAt most oF thE BuilDings wErE rEmoDElED mAny timEs hAs CrEAtED grEAt proBlEms For thosE sEEking to DAtE Both thE pArts AnD thE suCCEssivE vErsions.DEspitE thEsE DrAwBACks, ArChEology proviDEs thE most ConCrEtE EviDEnCE wE hAvE ABout thE thEAtrE struCturEs oF AnCiEnt grEECE.But, iF thEy hAvE tolD us muCh, ArChEologists hAvE not ComplEtED thEir work, AnD mAny sitEs hAvE sCArCEly BEEn touChED、
pErhAps thE most ControvErsiAl usE oF ArChEologiCAl EviDEnCE in thEAtrE history is vAsE pAintings, thousAnDs oF whiCh hAvE survivED From AnCiEnt grEECE. (most oF thosE usED By thEAtrE sCholArs ArE rEproDuCED in mArgArEtEBiEBEr’s "thE history oF thE grEEk AnD romAn thEAtrE". )DEpiCting sCEnEs From mythology AnD DAily liFE, thE vAsEs ArE thE most grAphiC piCtoriAl EviDEnCE wE hAvE, But thEy ArE Also EAsy to misintErprEt. somE sCholArs hAvE ConsiDErED Any vAsE thAt DEpiCts A suBjECt trEAtED in A surviving DrAmA or Any sCEnE showing mAsks, FlutE plAyErs, or CErEmoniAls to BE vAliD EviDEnCE oF thEAtriCAl prACtiCE. this is A highly quEstionABlE Assumption, sinCE thE grEEks mADE wiDEsprEAD usE oF mAsks, DAnCEs, AnD musiC outsiDE thE thEAtrE AnD sinCE thE myths on whiCh DrAmAtists DrEw wErE known to EvEryonE, inCluDing vAsE pAintErs, who might wEll DEpiCt thE sAmE suBjECts As DrAmAtists without BEing inDEBtED to thEm. thosE vAsEs showing sCEnEs unquEstionABly thEAtriCAl ArE FEw in numBEr.
writtEn EviDEnCE ABout AnCiEnt grEEk thEAtrE is oFtEn trEAtED As lEss rEliABlE thAn ArChEologiCAl EviDEnCE BECAusE most writtEn ACCounts ArE sEpArAtED so FAr in timE From thE EvEnts thEy DEsCriBE AnD BECAusE thEy proviDE no inFormAtion ABout thEir own sourCEs. oF thE writtEn EviDEnCE, thE surviving plAys ArE usuAlly trEAtED As thE most rEliABlE.But thE olDEst surviving mAnusCripts oF grEEk plAys DAtE From ArounD thE tEnth CEntury,C、E、, somE 1500 yEArs AFtEr thEy wErE First pErFormED、sinCE printing DiD not Exist During this timE spAn, CopiEs oF plAys hAD to BE mADE By hAnD, AnD thErEForE thE possiBility oF tExtuAl Errors CrEEping in wAs mAgniFiED、nEvErthElEss, thE sCripts oFFEr us our rEADiEst ACCEss to thE CulturAl AnD thEAtriCAl ConDitions out oF whiCh thEy CAmE.But thEsE sCripts, likE othEr kinDs oF EviDEnCE, ArE suBjECt to vArying intErprEtAtions.CErtAinly pErFormAnCEs EmBoDiED A mAlE pErspECtivE, For ExAmplE, sinCE thE plAys wErE writtEn, sElECtED, stAgED, AnD ACtED By mEn. yEt thE Existing plAys FEAturE numErous ChorusEs oF womEn AnD mAny FEAturE strong FEmAlE ChArACtErs.BECAusE thEsE ChArACtErs oFtEn sEEm viCtims oF thEir own powErlEssnEss AnD AppEAr to BE govErnED, EspECiAlly in thE ComEDiEs, By sExuAl DEsirE, somE CritiCs hAvE sEEn thEsE plAys As rAtionAlizAtions By thE mAlE-DominAtED CulturE For kEEping womEn sEgrEgAtED AnD CloistErED、othEr CritiCs, ho
onE oF thE primAry wAys oF ApproAChing thE grEEk thEAtrE is through ArChEology, thE systEmAtiC stuDy oF mAtEriAl rEmAins suCh As ArChitECturE, insCriptions, sCulpturE, vAsE pAinting, AnD othEr Forms oF DECorAtivE Art.
pErhAps thE most ControvErsiAl usE oF ArChEologiCAl EviDEnCE in thEAtrE history is vAsE pAintings, thousAnDs oF whiCh hAvE survivED From AnCiEnt grEECE. (most oF thosE usED By thEAtrE sCholArs ArE rEproDuCED in mArgArEtEBiEBEr’s "thE history oF thE grEEk AnD romAn thEAtrE". )DEpiCting sCEnEs From mythology AnD DAily liFE, thE vAsEs ArE thE most grAphiC piCtoriAl EviDEnCE wE hAvE, But thEy ArE Also EAsy to misintErprEt. somE sCholArs hAvE ConsiDErED Any vAsE thAt DEpiCts A suBjECt trEAtED in A surviving DrAmA or Any sCEnE showing mAsks, FlutE plAyErs, or CErEmoniAls to BE vAliD EviDEnCE oF thEAtriCAl prACtiCE. this is A highly quEstionABlE Assumption, sinCE thE grEEks mADE wiDEsprEAD usE oF mAsks, DAnCEs, AnD musiC outsiDE thE thEAtrE AnD sinCE thE myths on whiCh DrAmAtists DrEw wErE known to EvEryonE, inCluDing vAsE pAintErs, who might wEll DEpiCt thE sAmE suBjECts As DrAmAtists without BEing inDEBtED to thEm. thosE vAsEs showing sCEnEs unquEstionABly thEAtriCAl ArE FEw in numBEr.
writtEn EviDEnCE ABout AnCiEnt grEEk thEAtrE is oFtEn trEAtED As lEss rEliABlE thAn ArChEologiCAl EviDEnCE BECAusE most writtEn ACCounts ArE sEpArAtED so FAr in timE From thE EvEnts thEy DEsCriBE AnD BECAusE thEy proviDE no inFormAtion ABout thEir own sourCEs. oF thE writtEn EviDEnCE, thE surviving plAys ArE usuAlly trEAtED As thE most rEliABlE.But thE olDEst surviving mAnusCripts oF grEEk plAys DAtE From ArounD thE tEnth CEntury,C、E、, somE 1500 yEArs AFtEr thEy wErE First pErFormED、sinCE printing DiD not Exist During this timE spAn, CopiEs oF plAys hAD to BE mADE By hAnD, AnD thErEForE thE possiBility oF tExtuAl Errors CrEEping in wAs mAgniFiED、nEvErthElEss, thE sCripts oFFEr us our rEADiEst ACCEss to thE CulturAl AnD thEAtriCAl ConDitions out oF whiCh thEy CAmE.But thEsE sCripts, likE othEr kinDs oF EviDEnCE, ArE suBjECt to vArying intErprEtAtions.CErtAinly pErFormAnCEs EmBoDiED A mAlE pErspECtivE, For ExAmplE, sinCE thE plAys wErE writtEn, sElECtED, stAgED, AnD ACtED By mEn. yEt thE Existing plAys FEAturE numErous ChorusEs oF womEn AnD mAny FEAturE strong FEmAlE ChArACtErs.BECAusE thEsE ChArACtErs oFtEn sEEm viCtims oF thEir own powErlEssnEss AnD AppEAr to BE govErnED, EspECiAlly in thE ComEDiEs, By sExuAl DEsirE, somE CritiCs hAvE sEEn thEsE plAys As rAtionAlizAtions By thE mAlE-DominAtED CulturE For kEEping womEn sEgrEgAtED AnD CloistErED、othEr CritiCs, ho
【单选题】 ABunDAnt rAinFAll or irrigAtion is nECEssAry During thE EArly growpErioD oF CoFFEE, But Dry ConDitions During ripEning proDuCE BEAns with thE BEst FlAvor.
【单选题】 According to the author, all of-the following evidence relating to the first birds was found EXCEPT
A．( nesting materials
B．( four skeletons in good condition
C．( two fragmented skeletons
D．( a single feather
A．( nesting materials
B．( four skeletons in good condition
C．( two fragmented skeletons
D．( a single feather
【单选题】 All of the following are mentioned as characteristics of Roesen's still lifes EXCEPT that they
A．( are symbolic
B．( use simplified representations of flowers and fruit
C．( include brilliant colors
D．( are large in size
A．( are symbolic
B．( use simplified representations of flowers and fruit
C．( include brilliant colors
D．( are large in size
【单选题】 Which of the following is mentioned as the dominant theme in Roesen's painting
A．( Fertility
B．( Freedom
C．( Impermanence
D．( Abundance
A．( Fertility
B．( Freedom
C．( Impermanence
D．( Abundance
【单选题】 __________ important development of the Neolithic age was not in the manufacture of stone tools but in the production of food.
A．( The most
B．( Most
C．( Most of
D．( Of the most
A．( The most
B．( Most
C．( Most of
D．( Of the most
【单选题】Country musiC
A、CommErCiAl oFFshoot oF thE Folk musiC oF thE rurAl south, Country musiC is AnAmEriCAn Art Form thAt gAinED worlDwiDE AppEAl AFtEr worlD wAr ⅱ. originAlly known As hillBilly or mountAin musiC, Country musiC grEw From thE Folk musiC thAt wAs Brought to northAmEriCA ByAnglo-CEltiC sEttlErs in thE 1700s AnD 1800s. thE musiC ChAngED As it CAmE in ContACt with EthniC musiC--ACADiAnCAjun) in louisiAnA, lAtin in thE southwEst,AFriCAn throughout muCh oF thE south--AnD suCh populAr musiC As thAt FounD in vAuDEvillE, minstrEl shows, AnD hAwAiiAn tEnt shows. it wAs Also CAllED Country AnD wEstErn musiC BECAusE oF its populArity with CowBoys.
trADitionAlly Country musiCiAns hAvE BEEn most proFiCiEnt on stringED instrumEnts. thE violin, or FiDDlE, wAs thE most populAr instrumEnt on thE FrontiEr BECAusE oF its EAsy portABility. to this DAy FiDDlE ContEsts rEmAin A FEAturE oF thE Country musiC sCEnE. thE BAnjo wAs ADAptED From thEAFriCAnAmEriCAn CulturE, AnD thE FivE-siring moDEl is now univErsAlly populAr Among pErFormErs oF thE stylE known As BluEgrAss. thE guitAr hAs long BEEn A stAplE oF Country musiC BAnDs AnD singErs. string BAss AnD hAwAiiAn guitAr hAvE BEEn usED sinCE thE 1920s, AnD thEir moDErn DEsCEnDAnts ArE thE ElECtriC BAss AnD thE pEDAl stEEl guitAr.Drums, piAnos, AnD ElECtriFiED instrumEnts, usED As EArly As thE 1930s By wEstErn swing BAnDs, ArE hEArD on Country rECorDings From thE 1950s.
in 1922 rADio stAtions wBAp in Fort worth, tEx. , AnD wsB、inAtlAntA, gA、, BroADCAst shows CAllED BArn DAnCEs, moDElED AFtEr thE inFormAl soCiAl DAnCing oF thE FrontiEr.ChiCAgo’s wls stArtED whAt BECAmE thE nAtionAlBArnDAnCE in 1924, AnD wsm in nAshvillE, tEnn., BEgAn itsBArnDAnCE in novEmBEr 1925, just onE month AFtEr going on thE Air. rECorD CompAniEs Also DisCovErED thE CommErCiAl possiBilitiEs oF this musiC、FiDDlErECkA、C、) roBErtson trAvElED to nEw yorkCity AnD in 1922 mADE thE First hillBilly rECorDs, "ArkAnsAs trAvElEr" AnD "sAlliE gooDin". thE gEorgiA FiDDlEr johnCArson hAD thE First sAlEs suCCEss thE nExt yEAr with his okEh rECorD oF "littlE olD logCABin in thE lAnE".A、tExAs nAtivE who ACtuAlly hAD voiCE trAining AnD light opErA ExpEriEnCE, vErnonDAlhArt (his rEAl nAmE wAs mArion slAughtEr) solD millions oF rECorDs in thE 1920s For DozEns oF DiFFErEnt CompAniEs. his First Big sEllErs wErE "thE prisonEr’s song" AnD "thE wrECk oF thE olD 97" For viCtor in 1924. in 1927 jimmiE roDgErs, originAlly A yoDElEr, mADE his First rECorDings.BECAusE roDgErs, viCtor rECorDs inspirED numErous mEn to BEComE Country EntErtAinErs, hE BECAmE known As thE FAthEr oFCountry musiC、
hollywooD’s singing CowBoys won For Country musiC nAtionAl AnD intErnAtionAl AuDiEnCEs During thE lAtEr 1930s.EvEn though rECorD sAlEs For Country AnD othEr typEs oF musiC slippED During thE grEAtDEprEssion, rADio ContinuED to BroADCAst A lArgE ArrAy oF livE Country musiC tAlEnt, usuAlly in thE EArly morning, noon, or lAtE night hours. nEw BArn DAnCEs wErE hEArD on thE AirwAvEs, AnD two oF thE loCAl shows gAinED nEtwork rADio AuDiEnCEs During thE 1930s.
worlD wAr ⅱ ACCElErAtED Country musiC’s growth AwAy From An ExClusivEly southErn AnD rurAl phEnomEnon. southErn sErviCEmEn took thE musiC with thEm to FAr-Flung pArts oF thE nAtion AnD thE worlD, whilE CiviliAn DEFEnsE workErs From thE south Brought thEir lovE oF thE musiC into thE vArious CEntErs oF wAr proDuCtion.
thE postwAr yEArs Brought A nEwFounD nAtionAl prospErity, whiCh BoostED Country musiC to grEAtEr CommErCiAl hEights. singErs AnD BusinEss ExECutivEs ClosEly tiED to thE musiC sought AnD won A nEw rEspECtABility From trADE pApErs AnD nAtionAl mEDiA、thE olD tErms hillBilly AnD mountAin wErE rEplACED By Country, AnD EvEn For A timE By Country AnD wEstErn, in rECognition oF thE nEw populArity oF thE CowBoy singErs on tElEvision.
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A、CommErCiAl oFFshoot oF thE Folk musiC oF thE rurAl south, Country musiC is AnAmEriCAn Art Form thAt gAinED worlDwiDE AppEAl AFtEr worlD wAr ⅱ. originAlly known As hillBilly or mountAin musiC, Country musiC grEw From thE Folk musiC thAt wAs Brought to northAmEriCA ByAnglo-CEltiC sEttlErs in thE 1700s AnD 1800s. thE musiC ChAngED As it CAmE in ContACt with EthniC musiC--ACADiAnCAjun) in louisiAnA, lAtin in thE southwEst,AFriCAn throughout muCh oF thE south--AnD suCh populAr musiC As thAt FounD in vAuDEvillE, minstrEl shows, AnD hAwAiiAn tEnt shows. it wAs Also CAllED Country AnD wEstErn musiC BECAusE oF its populArity with CowBoys.
trADitionAlly Country musiCiAns hAvE BEEn most proFiCiEnt on stringED instrumEnts. thE violin, or FiDDlE, wAs thE most populAr instrumEnt on thE FrontiEr BECAusE oF its EAsy portABility. to this DAy FiDDlE ContEsts rEmAin A FEAturE oF thE Country musiC sCEnE. thE BAnjo wAs ADAptED From thEAFriCAnAmEriCAn CulturE, AnD thE FivE-siring moDEl is now univErsAlly populAr Among pErFormErs oF thE stylE known As BluEgrAss. thE guitAr hAs long BEEn A stAplE oF Country musiC BAnDs AnD singErs. string BAss AnD hAwAiiAn guitAr hAvE BEEn usED sinCE thE 1920s, AnD thEir moDErn DEsCEnDAnts ArE thE ElECtriC BAss AnD thE pEDAl stEEl guitAr.Drums, piAnos, AnD ElECtriFiED instrumEnts, usED As EArly As thE 1930s By wEstErn swing BAnDs, ArE hEArD on Country rECorDings From thE 1950s.
in 1922 rADio stAtions wBAp in Fort worth, tEx. , AnD wsB、inAtlAntA, gA、, BroADCAst shows CAllED BArn DAnCEs, moDElED AFtEr thE inFormAl soCiAl DAnCing oF thE FrontiEr.ChiCAgo’s wls stArtED whAt BECAmE thE nAtionAlBArnDAnCE in 1924, AnD wsm in nAshvillE, tEnn., BEgAn itsBArnDAnCE in novEmBEr 1925, just onE month AFtEr going on thE Air. rECorD CompAniEs Also DisCovErED thE CommErCiAl possiBilitiEs oF this musiC、FiDDlErECkA、C、) roBErtson trAvElED to nEw yorkCity AnD in 1922 mADE thE First hillBilly rECorDs, "ArkAnsAs trAvElEr" AnD "sAlliE gooDin". thE gEorgiA FiDDlEr johnCArson hAD thE First sAlEs suCCEss thE nExt yEAr with his okEh rECorD oF "littlE olD logCABin in thE lAnE".A、tExAs nAtivE who ACtuAlly hAD voiCE trAining AnD light opErA ExpEriEnCE, vErnonDAlhArt (his rEAl nAmE wAs mArion slAughtEr) solD millions oF rECorDs in thE 1920s For DozEns oF DiFFErEnt CompAniEs. his First Big sEllErs wErE "thE prisonEr’s song" AnD "thE wrECk oF thE olD 97" For viCtor in 1924. in 1927 jimmiE roDgErs, originAlly A yoDElEr, mADE his First rECorDings.BECAusE roDgErs, viCtor rECorDs inspirED numErous mEn to BEComE Country EntErtAinErs, hE BECAmE known As thE FAthEr oFCountry musiC、
hollywooD’s singing CowBoys won For Country musiC nAtionAl AnD intErnAtionAl AuDiEnCEs During thE lAtEr 1930s.EvEn though rECorD sAlEs For Country AnD othEr typEs oF musiC slippED During thE grEAtDEprEssion, rADio ContinuED to BroADCAst A lArgE ArrAy oF livE Country musiC tAlEnt, usuAlly in thE EArly morning, noon, or lAtE night hours. nEw BArn DAnCEs wErE hEArD on thE AirwAvEs, AnD two oF thE loCAl shows gAinED nEtwork rADio AuDiEnCEs During thE 1930s.
worlD wAr ⅱ ACCElErAtED Country musiC’s growth AwAy From An ExClusivEly southErn AnD rurAl phEnomEnon. southErn sErviCEmEn took thE musiC with thEm to FAr-Flung pArts oF thE nAtion AnD thE worlD, whilE CiviliAn DEFEnsE workErs From thE south Brought thEir lovE oF thE musiC into thE vArious CEntErs oF wAr proDuCtion.
thE postwAr yEArs Brought A nEwFounD nAtionAl prospErity, whiCh BoostED Country musiC to grEAtEr CommErCiAl hEights. singErs AnD BusinEss ExECutivEs ClosEly tiED to thE musiC sought AnD won A nEw rEspECtABility From trADE pApErs AnD nAtionAl mEDiA、thE olD tErms hillBilly AnD mountAin wErE rEplACED By Country, AnD EvEn For A timE By Country AnD wEstErn, in rECognition oF thE nEw populArity oF thE CowBoy singErs on tElEvision.
【单选题】gADgEts with A sportingChAnCE
ConsumEr ElECtroniCs: nEw sports EquipmEnt, From tEnnis rACkEts to running shoEs, usEs proCEssing powEr to EnhAnCE pErFormAnCE. is thAt FAir why shoulD Aspiring AthlEtEs stAnD on thE siDElinEs whEn A spot oF ElECtroniC AssistAnCE CAn put thEm in thE miDDlE oF thE gAmE thAt is thE quEstion mAny sports-EquipmEnt mAkErs ArE Asking As thEy sEnsE An opportunity to Boost thEir sAlEs with high-tECh proDuCts. you CoulD CAll it thE rEvEngE oF thE nErDs: A nEw wAvE oF miCroChip-EquippED sporting gooDs promisEs to EnhAnCE thE pErFormAnCE oF noviCEs AnD non-sporting typEs AlikE--AnD CoulD EvEn mAkE DiFFiCult sports EAsiEr.
tAkE Cross-Country skiing. viCtor pEtrEnko, An EnginEEr AtDArtmouthCollEgE’s iCE rEsEArCh lAB in nEw hAmpshirE, hAs invEntED somE smArt ski-BrAkEs thAt, hE BEliEvEs, will inCrEAsE thE populArity oF Cross-Country skiing By mAking thE sport lEss ChAllEnging For BEginnErs. thE BrAkEs, CurrEntly BEing tEstED By A ski mAnuFACturEr in thEAlps, oFFEr thE nECEssAry FriCtion For A BiggEr "kiCk-oFF ForCE" AnD mAkE thE skis lEss likEly to sliDE BACkwArDs in thEir trACks. to mAkE this hAppEn, An ElECtriC CurrEnt From thE Bottom oF thE skis pulsEs through thE iCE, mElting A thin lAyEr oF snow thAt instAntly rEFrEEzEs AnD ACts As A sort oF gluE.
this is not thE only Form oF smArt ski to hit thE slopEs.AtomiC, A lEADing ski-mAkEr BAsED inAustriA, plAns to introDuCE A systEm lAtEr this yEAr thAt runs A DiAgnostiC sAFEty ChECk to EnsurE thAt thE ski BinDing is propErly ClosED, with thE rEsult BEing shown on A tiny Built-in liquiD-CrystAl DisplAy. mEAnwhilE, tEnnis EquipmEnt mAnuFACturErs ArE hoping thAt innovAtion will Bring nEw zip to thEir BusinEss As wEll. thEy CErtAinly nEED to Do somEthing: ACCorDing to sportsCAnlnFo, A mArkEt-rEsEArCh Firm BAsED in FloriDA, sAlEs oF tEnnis rACkEts inAmEriCA FEll 12.5% During thE First hAlF oF 2004 CompArED with thE First hAlF oF 2003.
with thE BAll ClEArly in thEir Court, rEsEArChErs At hEAD, A mAkEr oF sporting EquipmEnt, hAvE DEvisED A proDuCt thAt shoulD AppEAl to plAyErs suFFEring From tEnnis ElBow.A、Chip insiDE thE rACkEt Controls piEzo-ElECtriC FiBrEs, whiCh ConvErt mEChAniCAl EnErgy From thE BAll’s impACt into ElECtriCAl potEntiAl EnErgy. this EnErgy is thEn usED to gEnErAtE A CountEr-ForCE in thE piEzo-ElECtriC FiBrEs thAt CAusEs A DAmpEning EFFECt.All oF this, thE Firm sAys, trAnslAtEs into lEss strEss on thE ElBow. hEAD ClAims thAt rEsiDuAl viBrAtions in thE rACkEt ArE DAmpEnED twiCE As FAst As in ConvEntionAl rACkEts, rEDuCing thE shoCk ExpEriEnCED By thE plAyEr’s Arm By morE thAn 50%.
no DouBt purists will oBjECt thAt this is simply not CriCkEt. rulE-mAkErs in mAny sports ArE now BEing ForCED to ConsiDEr thE impliCAtions oF EquipmEnt thAt promisEs to AugmEnt AthlEtEs’ pErFormAnCE with ElECtroniC musClE. thE intErnAtionAl tEnnis FEDErAtion, thAt BoDy is rEsponsiBlE For sEtting thE rulEs oF thE gAmE, hAs spECiFiED in its most rECEnt guiDElinEs thAt "no EnErgy sourCE thAt in Any wAy ChAngEs or AFFECts thE plAying ChArACtEristiCs oF A rACkEt mAy BE Built into or AttAChED to A rACkEt".
yEt DEspitE suCh worDing, thE guiDElinE DoEs not ACtuAlly EliminAtE thE usE oF hEAD’s smArt rACkEts, BECAusE thErE is no ExtErnAl EnErgy sourCE--thE DAmping EFFECt rEliEs solEly on EnErgy From thE BAll’s impACt. though high-tECh EquipmEnt mAy CAusE ControvErsy on thE Court, tEnnis CluBs hAvE to ADhErE to thE guiDElinEs sEt For thE sport, ExplAins stuArt millEr, thE itF’s tEChniCAl mAnAgEr.AnD iF thE rulEs Allow sElF-gEnErAtED ForCEs to moDiFy A rACkEt’s rEsponsE, so BE it.
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DiFFErEnt sports hAvE EnCountErED DiFFErEnt tEChnologiEs, though thE FuturE will unDouBtEDly Bring morE ovErlAp.
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in golF, gADgEts thAt pinpoint thE loCAtion oF thE g
ConsumEr ElECtroniCs: nEw sports EquipmEnt, From tEnnis rACkEts to running shoEs, usEs proCEssing powEr to EnhAnCE pErFormAnCE. is thAt FAir why shoulD Aspiring AthlEtEs stAnD on thE siDElinEs whEn A spot oF ElECtroniC AssistAnCE CAn put thEm in thE miDDlE oF thE gAmE thAt is thE quEstion mAny sports-EquipmEnt mAkErs ArE Asking As thEy sEnsE An opportunity to Boost thEir sAlEs with high-tECh proDuCts. you CoulD CAll it thE rEvEngE oF thE nErDs: A nEw wAvE oF miCroChip-EquippED sporting gooDs promisEs to EnhAnCE thE pErFormAnCE oF noviCEs AnD non-sporting typEs AlikE--AnD CoulD EvEn mAkE DiFFiCult sports EAsiEr.
tAkE Cross-Country skiing. viCtor pEtrEnko, An EnginEEr AtDArtmouthCollEgE’s iCE rEsEArCh lAB in nEw hAmpshirE, hAs invEntED somE smArt ski-BrAkEs thAt, hE BEliEvEs, will inCrEAsE thE populArity oF Cross-Country skiing By mAking thE sport lEss ChAllEnging For BEginnErs. thE BrAkEs, CurrEntly BEing tEstED By A ski mAnuFACturEr in thEAlps, oFFEr thE nECEssAry FriCtion For A BiggEr "kiCk-oFF ForCE" AnD mAkE thE skis lEss likEly to sliDE BACkwArDs in thEir trACks. to mAkE this hAppEn, An ElECtriC CurrEnt From thE Bottom oF thE skis pulsEs through thE iCE, mElting A thin lAyEr oF snow thAt instAntly rEFrEEzEs AnD ACts As A sort oF gluE.
this is not thE only Form oF smArt ski to hit thE slopEs.AtomiC, A lEADing ski-mAkEr BAsED inAustriA, plAns to introDuCE A systEm lAtEr this yEAr thAt runs A DiAgnostiC sAFEty ChECk to EnsurE thAt thE ski BinDing is propErly ClosED, with thE rEsult BEing shown on A tiny Built-in liquiD-CrystAl DisplAy. mEAnwhilE, tEnnis EquipmEnt mAnuFACturErs ArE hoping thAt innovAtion will Bring nEw zip to thEir BusinEss As wEll. thEy CErtAinly nEED to Do somEthing: ACCorDing to sportsCAnlnFo, A mArkEt-rEsEArCh Firm BAsED in FloriDA, sAlEs oF tEnnis rACkEts inAmEriCA FEll 12.5% During thE First hAlF oF 2004 CompArED with thE First hAlF oF 2003.
with thE BAll ClEArly in thEir Court, rEsEArChErs At hEAD, A mAkEr oF sporting EquipmEnt, hAvE DEvisED A proDuCt thAt shoulD AppEAl to plAyErs suFFEring From tEnnis ElBow.A、Chip insiDE thE rACkEt Controls piEzo-ElECtriC FiBrEs, whiCh ConvErt mEChAniCAl EnErgy From thE BAll’s impACt into ElECtriCAl potEntiAl EnErgy. this EnErgy is thEn usED to gEnErAtE A CountEr-ForCE in thE piEzo-ElECtriC FiBrEs thAt CAusEs A DAmpEning EFFECt.All oF this, thE Firm sAys, trAnslAtEs into lEss strEss on thE ElBow. hEAD ClAims thAt rEsiDuAl viBrAtions in thE rACkEt ArE DAmpEnED twiCE As FAst As in ConvEntionAl rACkEts, rEDuCing thE shoCk ExpEriEnCED By thE plAyEr’s Arm By morE thAn 50%.
no DouBt purists will oBjECt thAt this is simply not CriCkEt. rulE-mAkErs in mAny sports ArE now BEing ForCED to ConsiDEr thE impliCAtions oF EquipmEnt thAt promisEs to AugmEnt AthlEtEs’ pErFormAnCE with ElECtroniC musClE. thE intErnAtionAl tEnnis FEDErAtion, thAt BoDy is rEsponsiBlE For sEtting thE rulEs oF thE gAmE, hAs spECiFiED in its most rECEnt guiDElinEs thAt "no EnErgy sourCE thAt in Any wAy ChAngEs or AFFECts thE plAying ChArACtEristiCs oF A rACkEt mAy BE Built into or AttAChED to A rACkEt".
yEt DEspitE suCh worDing, thE guiDElinE DoEs not ACtuAlly EliminAtE thE usE oF hEAD’s smArt rACkEts, BECAusE thErE is no ExtErnAl EnErgy sourCE--thE DAmping EFFECt rEliEs solEly on EnErgy From thE BAll’s impACt. though high-tECh EquipmEnt mAy CAusE ControvErsy on thE Court, tEnnis CluBs hAvE to ADhErE to thE guiDElinEs sEt For thE sport, ExplAins stuArt millEr, thE itF’s tEChniCAl mAnAgEr.AnD iF thE rulEs Allow sElF-gEnErAtED ForCEs to moDiFy A rACkEt’s rEsponsE, so BE it.
【单选题】listEning 2 "EnvironmEntAl sCiEnCEClAss"
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whAt AspECt oF winD powEr is thE lECturE mAinly ABout
A、ElECtriCAl powEr inCAliForniA
B、AltErnAtivE EnErgy sourCEs
C、proBlEms AssoCiAtED with turBinEs
D、winD As A rEnEwABlE EnErgy option
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A、ElECtriCAl powEr inCAliForniA
B、AltErnAtivE EnErgy sourCEs
C、proBlEms AssoCiAtED with turBinEs
D、winD As A rEnEwABlE EnErgy option
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