【单选题】Most of North America receives （） some form of continuous plant cover except in the arid and semiarid Southwest.
A. moisture to sustain sufficient
B. sufficient moisture to sustain
C. to sustain sufficient moisture
D. sufficient to sustain moisture
A. moisture to sustain sufficient
B. sufficient moisture to sustain
C. to sustain sufficient moisture
D. sufficient to sustain moisture
【单选题】With （） formal art training and largely self-educated, Anna Mary Moses, known as Grandma Moses, began to paint rural scenes at the age of seventy-eight.
A. not
B. no
C. neither
D. never
A. not
B. no
C. neither
D. never
【单选题】AlAskA BEComE thE Forty-ninth stAtE in 1959,AnD hAwAii BECAmE thE FiFtiEth stAtE lAtEly thAt yEAr.
【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.
![]()
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】 (Most) fish swim by (moving) their tails from (side to) side, with (little relatively) body undulation.
A．Most
B．moving
C．side to
D．little relatively
A．Most
B．moving
C．side to
D．little relatively
【单选题】rEADing 5 "spEECh AnD writing"
it is A wiDEly hElD misConCEption thAt writing is morE pErFECt thAn spEECh. to mAny pEoplE, writing somEhow sEEms morE CorrECt AnD morE stABlE, whErEAs spEECh CAn BE CArElEss, CorruptED, AnD susCEptiBlE to ChAngE. somE pEoplE EvEn go so FAr As to iDEntiFy lAnguAgE with writing AnD to rEgArD spEECh As A sEConDAry Form oF lAnguAgE usED impErFECtly to ApproximAtE thE iDEAls oF thE writtEn lAnguAgE.
→ onE oF thE BAsiC Assumptions oF moDErn linguistiCs, howEvEr, is thAt spEECh is primAry AnD writing is sEConDAry. thE most immEDiAtE mAniFEstAtion oF lAnguAgE is spEECh AnD not writing. writing is simply thE rEprEsEntAtion oF spEECh in AnothEr physiCAl mEDium. spokEn lAnguAgE EnCoDEs thought into A physiCAlly trAnsmittABlE Form, whilE writing, in turn, EnCoDEs spokEn lAnguAgE into A physiCAlly prEsErvABlE Form. writing is A two-stAgE proCEss.All units oF writing, whEthEr lEttErs or ChArACtErs, ArE BAsED on units oF spEECh, i.E., worDs, sounDs, or syllABlEs. whEn linguists stuDy lAnguAgE, thEy tAkE thE spokEn lAnguAgE As thEir BEst sourCE oF DAtA AnD thEir oBjECt oF DEsCription (ExCEpt in instAnCEs oF lAnguAgEs likE lAtin For whiCh thErE ArE no longEr Any spEAkErs).
thErE ArE sEvErAl rEAsons For mAintAining thAt spEECh is primAry AnD writing is sEConDAry.
![]()
First, writing is A lAtEr historiCAl DEvElopmEnt thAn spokEn lAnguAgE.
![]()
CurrEnt ArChEologiCAl EviDEnCE inDiCAtEs thAt writing wAs First utilizED in sumEr, thAt is, moDErn-DAy irAq, ABout 6,000 yEArs Ago.
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As FAr As physiCAl AnD CulturAl Anthropologists CAn tEll, spokEn lAnguAgE hAs proBABly BEEn usED By humAns For hunDrEDs oF thousAnDs oF yEArs.
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→ sEConD, writing DoEs not Exist EvErywhErE thAt spokEn lAnguAgE Exists. this sEEms hArD to imAginE in our highly litErAtE soCiEty, But thE FACt is thAt thErE ArE still mAny CommunitiEs in thE worlD whErE A writtEn Form oF lAnguAgE is not usED, AnD EvEn in thosE CulturEs using A writing systEm, thErE ArE inDiviDuAls who FAil to lEArn thE writtEn Form oF thEir lAnguAgE. in FACt, thE mAjority oF thEEArth’s inhABitAnts ArE illitErAtE, though quitE CApABlE oF spokEn CommuniCAtion. howEvEr, no soCiEty usEs only A writtEn lAnguAgE with no spokEn Form.
thirD, writing must BE tAught, whErEAs spokEn lAnguAgE is ACquirED AutomAtiCAlly.All ChilDrEn, ExCEpt ChilDrEn with sErious lEArning DisABilitiEs, nAturAlly lEArn to spEAk thE lAnguAgE oF thE Community in whiCh thEy ArE Brought up. thEy ACquirE thE BAsiCs oF thEir nAtivE lAnguAgE BEForE thEy EntEr sChool, AnD EvEn iF thEy nEvEr AttEnD sChool, thEy BEComE Fully CompEtEnt spEAkErs. writing systEms vAry in ComplExity, But rEgArDlEss oF thEir lEvEl oF sophistiCAtion, thEy must All BE tAught.
FinAlly, nEurolinguistiC EviDEnCE (stuDiEs oF thE BrAin in ACtion During lAnguAgE usE) DEmonstrAtEs thAt thE proCEssing AnD proDuCtion oF writtEn lAnguAgE is ovErlAiD on thE spokEn lAnguAgE CEntErs in thE BrAin. spokEn lAnguAgE involvEs sEvErAl DistinCt ArEAs oF thE BrAin; writing usEs thEsE ArEAs AnD othErs As wEll.
→ so whAt givEs risE to thE misConCEption thAt writing is morE pErFECt thAn spEECh thErE ArE sEvErAl rEAsons. For onE thing, thE proDuCt oF writing is usuAlly morE Aptly worDED AnD BEttEr orgAnizED, ContAining FEwEr Errors, hEsitAtions, AnD inComplEtE sEntEnCEs thAn ArE FounD in spEECh. this pErFECtion oF writing CAn BE ExplAinED By thE FACt thAt writing is thE rEsult oF DEliBErAtion, CorrECtion, AnD rEvision, whilE spEECh is thE spontAnEous AnD simultAnEous FormulAtion oF iDEAs; writing is thErEForE lEss suBjECt to thE ConstrAint oF timE thAn spEECh is. in ADDition, writing is ultimAtEly AssoCiAtED with EDuCAtion AnD EDu
it is A wiDEly hElD misConCEption thAt writing is morE pErFECt thAn spEECh. to mAny pEoplE, writing somEhow sEEms morE CorrECt AnD morE stABlE, whErEAs spEECh CAn BE CArElEss, CorruptED, AnD susCEptiBlE to ChAngE. somE pEoplE EvEn go so FAr As to iDEntiFy lAnguAgE with writing AnD to rEgArD spEECh As A sEConDAry Form oF lAnguAgE usED impErFECtly to ApproximAtE thE iDEAls oF thE writtEn lAnguAgE.
→ onE oF thE BAsiC Assumptions oF moDErn linguistiCs, howEvEr, is thAt spEECh is primAry AnD writing is sEConDAry. thE most immEDiAtE mAniFEstAtion oF lAnguAgE is spEECh AnD not writing. writing is simply thE rEprEsEntAtion oF spEECh in AnothEr physiCAl mEDium. spokEn lAnguAgE EnCoDEs thought into A physiCAlly trAnsmittABlE Form, whilE writing, in turn, EnCoDEs spokEn lAnguAgE into A physiCAlly prEsErvABlE Form. writing is A two-stAgE proCEss.All units oF writing, whEthEr lEttErs or ChArACtErs, ArE BAsED on units oF spEECh, i.E., worDs, sounDs, or syllABlEs. whEn linguists stuDy lAnguAgE, thEy tAkE thE spokEn lAnguAgE As thEir BEst sourCE oF DAtA AnD thEir oBjECt oF DEsCription (ExCEpt in instAnCEs oF lAnguAgEs likE lAtin For whiCh thErE ArE no longEr Any spEAkErs).
thErE ArE sEvErAl rEAsons For mAintAining thAt spEECh is primAry AnD writing is sEConDAry.
→ sEConD, writing DoEs not Exist EvErywhErE thAt spokEn lAnguAgE Exists. this sEEms hArD to imAginE in our highly litErAtE soCiEty, But thE FACt is thAt thErE ArE still mAny CommunitiEs in thE worlD whErE A writtEn Form oF lAnguAgE is not usED, AnD EvEn in thosE CulturEs using A writing systEm, thErE ArE inDiviDuAls who FAil to lEArn thE writtEn Form oF thEir lAnguAgE. in FACt, thE mAjority oF thEEArth’s inhABitAnts ArE illitErAtE, though quitE CApABlE oF spokEn CommuniCAtion. howEvEr, no soCiEty usEs only A writtEn lAnguAgE with no spokEn Form.
thirD, writing must BE tAught, whErEAs spokEn lAnguAgE is ACquirED AutomAtiCAlly.All ChilDrEn, ExCEpt ChilDrEn with sErious lEArning DisABilitiEs, nAturAlly lEArn to spEAk thE lAnguAgE oF thE Community in whiCh thEy ArE Brought up. thEy ACquirE thE BAsiCs oF thEir nAtivE lAnguAgE BEForE thEy EntEr sChool, AnD EvEn iF thEy nEvEr AttEnD sChool, thEy BEComE Fully CompEtEnt spEAkErs. writing systEms vAry in ComplExity, But rEgArDlEss oF thEir lEvEl oF sophistiCAtion, thEy must All BE tAught.
FinAlly, nEurolinguistiC EviDEnCE (stuDiEs oF thE BrAin in ACtion During lAnguAgE usE) DEmonstrAtEs thAt thE proCEssing AnD proDuCtion oF writtEn lAnguAgE is ovErlAiD on thE spokEn lAnguAgE CEntErs in thE BrAin. spokEn lAnguAgE involvEs sEvErAl DistinCt ArEAs oF thE BrAin; writing usEs thEsE ArEAs AnD othErs As wEll.
→ so whAt givEs risE to thE misConCEption thAt writing is morE pErFECt thAn spEECh thErE ArE sEvErAl rEAsons. For onE thing, thE proDuCt oF writing is usuAlly morE Aptly worDED AnD BEttEr orgAnizED, ContAining FEwEr Errors, hEsitAtions, AnD inComplEtE sEntEnCEs thAn ArE FounD in spEECh. this pErFECtion oF writing CAn BE ExplAinED By thE FACt thAt writing is thE rEsult oF DEliBErAtion, CorrECtion, AnD rEvision, whilE spEECh is thE spontAnEous AnD simultAnEous FormulAtion oF iDEAs; writing is thErEForE lEss suBjECt to thE ConstrAint oF timE thAn spEECh is. in ADDition, writing is ultimAtEly AssoCiAtED with EDuCAtion AnD EDu
【单选题】 The author mentions the prickly pear (line 12) as an example of
A．( valuable fruit-bearing plants of the scrub area
B．( unattractive plant life of the scrub area
C．( a pant discovered by an early naturalist
D．( plant life that is extremely are
A．( valuable fruit-bearing plants of the scrub area
B．( unattractive plant life of the scrub area
C．( a pant discovered by an early naturalist
D．( plant life that is extremely are
【单选题】 The seat of France's North American holdings in the eighteenth century was Quebec, and the French heritage — dominant there.
A．(to remain
B．(remaining
C．(by remaining
D．(has remained
A．(to remain
B．(remaining
C．(by remaining
D．(has remained
【单选题】 Most geologists believe — from the remains of tiny marine plants and animals that died millions of years ago.
A．(what was formed petroleum
B．(that petroleum was formed
C．(when petroleum formed
D．(petroleum that formed
A．(what was formed petroleum
B．(that petroleum was formed
C．(when petroleum formed
D．(petroleum that formed
【单选题】 Georgia O'Keeffe is known for (hers) use (of) organic, abstract (forms) painted in clear, (strong) colors.
A．hers
B．of
C．forms
D．strong
A．hers
B．of
C．forms
D．strong
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