【单选题】In 1966 only 60 percent of all five year olds in the United States attended kindergarten, () in 1985 almost 82 percent did so.
A. with
B. which
C. whether
D. while
A. with
B. which
C. whether
D. while
【单选题】The house style that dominated American housing during the 1880s and 1890s was known as Queen Anne, aname for an American style. The name was, in fact, a historical accident, originating with fashionable architects in Victorian England who coinedwith apparently no reason other than its pleasing sound. The Queen Anne style was loosely based on medieval structures built long before 1702, the beginning year of Queen Anne’s reign.
A distinctive characteristic found in most Queen Anne houses is the unusual roof shape - a steeply pitched, hipped central portion with protruding lower front and side extensions that end in gables. It is often possible to spot these distinctive roof forms from several blocks away. Another feature of this style is the detailing, shown in the wood shingle siding cut into fanciful decorative patterns of scallops, curves, diamonds, or triangles. Queen Anne houses are almost always asymmetrical. If you draw an imaginary line down the middle of one, you will see how drastically different the right and left sides are, all the way from ground level to roof peak. A final characteristic is the inviting wraparound porch that includes the front door area and then extends around to either the right or left side of the house.
Queen Anne houses faded from fashion early in the twentieth century as the public’s taste shifted toward the more modern Prairie and Craftsman style houses. Today, however, Queen Anne houses are favorite symbols of the past, painstakingly and lovingly restored by old-houseand reproduced by builders who give faithful attention to the distinctive shapes and detailing that were first popularized more than one hundred years ago.
1. Why does the author use the word curious in describing the name of an American style?
A.The style was invented before Queen Anne’s reign.
B.The name was accidentally misspelled.
C.The style was more popular in Victorian England.
D.The name did not originate in American.
2. The word it in paragraph 1 refers to
A. style
B. name
C. accident
D. England
3. Which of the following is NOT mentioned as a characteristic feature of Queen Anne houses?
A. decorative windows
B. wood shingle exterior walls
C. large porch
D. steeply pitched roof
4. Which of the following can be inferred from paragraph 2 about the Queen Anne style?
A. the Queen Anne style combined several other styles.
B. the Queen Anne style had to be built in the city.
C. the Queen Anne style was elaborate and ornate.
D. the Queen Anne style was not very popular.
5. The word buffs in paragraph 3 is closest in meaning to
A. experts
B. sellers
C. critics
D. painters
A distinctive characteristic found in most Queen Anne houses is the unusual roof shape - a steeply pitched, hipped central portion with protruding lower front and side extensions that end in gables. It is often possible to spot these distinctive roof forms from several blocks away. Another feature of this style is the detailing, shown in the wood shingle siding cut into fanciful decorative patterns of scallops, curves, diamonds, or triangles. Queen Anne houses are almost always asymmetrical. If you draw an imaginary line down the middle of one, you will see how drastically different the right and left sides are, all the way from ground level to roof peak. A final characteristic is the inviting wraparound porch that includes the front door area and then extends around to either the right or left side of the house.
Queen Anne houses faded from fashion early in the twentieth century as the public’s taste shifted toward the more modern Prairie and Craftsman style houses. Today, however, Queen Anne houses are favorite symbols of the past, painstakingly and lovingly restored by old-houseand reproduced by builders who give faithful attention to the distinctive shapes and detailing that were first popularized more than one hundred years ago.
1. Why does the author use the word curious in describing the name of an American style?
A.The style was invented before Queen Anne’s reign.
B.The name was accidentally misspelled.
C.The style was more popular in Victorian England.
D.The name did not originate in American.
2. The word it in paragraph 1 refers to
A. style
B. name
C. accident
D. England
3. Which of the following is NOT mentioned as a characteristic feature of Queen Anne houses?
A. decorative windows
B. wood shingle exterior walls
C. large porch
D. steeply pitched roof
4. Which of the following can be inferred from paragraph 2 about the Queen Anne style?
A. the Queen Anne style combined several other styles.
B. the Queen Anne style had to be built in the city.
C. the Queen Anne style was elaborate and ornate.
D. the Queen Anne style was not very popular.
5. The word buffs in paragraph 3 is closest in meaning to
A. experts
B. sellers
C. critics
D. painters
【单选题】thE onE-FluiD thEory oF ElECtriCity wAs proposing By BEnjAmin FrAnklin, A mAn FAmous For his wiDE intErEsts AnD
grEAt AttAinmEnts.
【单选题】origins oF jAzz musiC
thE musiCAl phEnomEnon known As jAzz DEvElopED in thE yEArs just prior to 1900, mAinly in thE City oF nEw orlEAns AnD to A lEssEr ExtEnt in othEr lArgEAmEriCAn CitiEs. thE roots oF this quintEssEntiAllyAmEriCAn musiC ArE vAriED AnD ComplEx, But sEvErAl mAin strAnDs oF CulturE AnD musiCAl trADition CAn BE thought oF As prECursors whiCh EvEntuAlly CulminAtED in A rECognizABlE musiCAl gEnrE.
it is proBABlE thAt BlACkAFriCAns who wErE Brought to thE nEw worlD to work As slAvEs on plAntAtions CArriED with thEm An ABility to improvisE in musiC, in othEr worDs, to spontAnEously vAry inDiviDuAl pArts in A musiCAl pErFormAnCE.
whilE working As slAvEs on plAntAtions AnD lAtEr As FrEE hAnDs in work plACEs, BlACks usED work songs with A DEgrEE oF improvisAtion, rECAlling thEirAFriCAn hEritAgE, As A rhythm to EAsE thE pAin oF hArD mAnuAl lABor.
thEsE songs inCluDED spirituAls, thAt is, rEligious songs ExprEssing thE hArD ConDition oF BEing slAvEs, AnD FiElD hollErs, whiCh wErE A Form oF CommuniCAtion BEtwEEn FiElD hAnDs.
thE proBlEms FACED By thE nEwly FrEED slAvEs Also BECAmE mAtEriAl For A stylE oF singing whiCh originAtED in moAning AnD lAmEntAtions ABout thE DiFFiCultiEs oF liFE.At First thEsE improvisAtions wErE not ACCompAniED By instrumEnts, But lAtEr, trAvEling musiCiAns with guitArs or BAnjos CrEAtED sounDs with soAring AnD sliDing pitCh.
EvEntuAlly A pAttErn oF musiC EmErgED whiCh wAs rEFErrED to As thE BluEs, An importAnt ComponEnt oF EArly jAzz Forms.
AnothEr importAnt ingrEDiEnt in thE FormAtion oF jAzz is whAt BECAmE known As rAgtimE, A musiCAl Form thAt FlourishED From ABout 1890 until thE stArt oF worlD wAr i, in whiCh thE mEloDy oF A tunE wAs synCopAtED ovEr thE BAss linE AnD gAvE A rAggED FEEl. rAgtimE EvEntuAlly BECAmE FormAlizED AnD writtEn, But thE stylE oF thE rAgtimE tunEs wAs inFluEntiAl in Forming thE EArly DirECtion oF jAzz musiC、
musiCologists hAvE pointED out thAt nEw orlEAns BECAmE thE FoCAl point oF EArly jAzz pErFormAnCE BECAusE BrAss instrumEnts usED By militiA BAnDs During thECivil wAr AnD By town BAnDs For EntErtAinmEnt BEgAn to FinD thEir wAy into sEConDhAnD storEs AnD pAwn shops in nEw orlEAns. this EnABlED poorEr pEoplE to oBtAin instrumEnts ChEAply. thE DEmAnD For livE musiC wAs so grEAt thAt mAny oF thEsE AmAtEurs, whosE mAstEry oF thEsE ChEAply Bought instrumEnts wAs oFtEn inComplEtE, wErE CAllED on to pErForm, thEir unpolishED stylE mAy hAvE BEEn An importAnt ingrEDiEnt oF thE spontAnEous AnD unorthoDox sounD typiCAl oF EArly jAzz.
ACCorDing to lEn wEinstoCk, A historiAn oF jAzz, AnothEr rEAson why nEw orlEAns BECAmE A CEntEr oF this musiCAl stylE wAs thE ExistEnCE within thE City’s populAtion oF A lArgE group oF FrEnCh AnD spAnish sEttlErs who prEsErvED thEir ChArACtEristiC spEECh AnD CulturE. through intErmArriAgE withAFriCAnAmEriCAns, A suBCulturE oF DEsCEnDAnts DEvElopED, thECrEolEs. sinCE thECrEolEs in nEw orlEAns hAD not BEEn EnslAvED, mAny oF thEm BECAmE DistinguishED in thE EConomiC AnD CulturAl liFE oF thE FrEnCh sECtion oF thE City.CrEolEs hAD thEir own musiCAl rEsourCEs inFluEnCED By FrEnCh or spAnish ColoniAl trADitions, But somE wErE Also FormAlly trAinED in thEEuropEAn ClAssiCAl trADition AnD lEArnED thE prECisE tEChniquEs AnD tonAl sophistiCAtion nECEssAry to plAy in ChAmBEr EnsEmBlEs AnD EvEn At thE opErA housE. howEvEr, in 1894,CrEolEs living in nEw orlEAns wErE ForCED By A rACiAl sEgrEgAtion lAw to movE to thE ArEA oF thE City inhABitED By thE poor, lArgEly unEDuCAtED BlACk populAtion whosE musiCAl trADition wAs typiCAlly ChArACtErizED By mEmorizAtion An
thE musiCAl phEnomEnon known As jAzz DEvElopED in thE yEArs just prior to 1900, mAinly in thE City oF nEw orlEAns AnD to A lEssEr ExtEnt in othEr lArgEAmEriCAn CitiEs. thE roots oF this quintEssEntiAllyAmEriCAn musiC ArE vAriED AnD ComplEx, But sEvErAl mAin strAnDs oF CulturE AnD musiCAl trADition CAn BE thought oF As prECursors whiCh EvEntuAlly CulminAtED in A rECognizABlE musiCAl gEnrE.
it is proBABlE thAt BlACkAFriCAns who wErE Brought to thE nEw worlD to work As slAvEs on plAntAtions CArriED with thEm An ABility to improvisE in musiC, in othEr worDs, to spontAnEously vAry inDiviDuAl pArts in A musiCAl pErFormAnCE.
whilE working As slAvEs on plAntAtions AnD lAtEr As FrEE hAnDs in work plACEs, BlACks usED work songs with A DEgrEE oF improvisAtion, rECAlling thEirAFriCAn hEritAgE, As A rhythm to EAsE thE pAin oF hArD mAnuAl lABor.
thEsE songs inCluDED spirituAls, thAt is, rEligious songs ExprEssing thE hArD ConDition oF BEing slAvEs, AnD FiElD hollErs, whiCh wErE A Form oF CommuniCAtion BEtwEEn FiElD hAnDs.
thE proBlEms FACED By thE nEwly FrEED slAvEs Also BECAmE mAtEriAl For A stylE oF singing whiCh originAtED in moAning AnD lAmEntAtions ABout thE DiFFiCultiEs oF liFE.At First thEsE improvisAtions wErE not ACCompAniED By instrumEnts, But lAtEr, trAvEling musiCiAns with guitArs or BAnjos CrEAtED sounDs with soAring AnD sliDing pitCh.
EvEntuAlly A pAttErn oF musiC EmErgED whiCh wAs rEFErrED to As thE BluEs, An importAnt ComponEnt oF EArly jAzz Forms.
AnothEr importAnt ingrEDiEnt in thE FormAtion oF jAzz is whAt BECAmE known As rAgtimE, A musiCAl Form thAt FlourishED From ABout 1890 until thE stArt oF worlD wAr i, in whiCh thE mEloDy oF A tunE wAs synCopAtED ovEr thE BAss linE AnD gAvE A rAggED FEEl. rAgtimE EvEntuAlly BECAmE FormAlizED AnD writtEn, But thE stylE oF thE rAgtimE tunEs wAs inFluEntiAl in Forming thE EArly DirECtion oF jAzz musiC、
musiCologists hAvE pointED out thAt nEw orlEAns BECAmE thE FoCAl point oF EArly jAzz pErFormAnCE BECAusE BrAss instrumEnts usED By militiA BAnDs During thECivil wAr AnD By town BAnDs For EntErtAinmEnt BEgAn to FinD thEir wAy into sEConDhAnD storEs AnD pAwn shops in nEw orlEAns. this EnABlED poorEr pEoplE to oBtAin instrumEnts ChEAply. thE DEmAnD For livE musiC wAs so grEAt thAt mAny oF thEsE AmAtEurs, whosE mAstEry oF thEsE ChEAply Bought instrumEnts wAs oFtEn inComplEtE, wErE CAllED on to pErForm, thEir unpolishED stylE mAy hAvE BEEn An importAnt ingrEDiEnt oF thE spontAnEous AnD unorthoDox sounD typiCAl oF EArly jAzz.
ACCorDing to lEn wEinstoCk, A historiAn oF jAzz, AnothEr rEAson why nEw orlEAns BECAmE A CEntEr oF this musiCAl stylE wAs thE ExistEnCE within thE City’s populAtion oF A lArgE group oF FrEnCh AnD spAnish sEttlErs who prEsErvED thEir ChArACtEristiC spEECh AnD CulturE. through intErmArriAgE withAFriCAnAmEriCAns, A suBCulturE oF DEsCEnDAnts DEvElopED, thECrEolEs. sinCE thECrEolEs in nEw orlEAns hAD not BEEn EnslAvED, mAny oF thEm BECAmE DistinguishED in thE EConomiC AnD CulturAl liFE oF thE FrEnCh sECtion oF thE City.CrEolEs hAD thEir own musiCAl rEsourCEs inFluEnCED By FrEnCh or spAnish ColoniAl trADitions, But somE wErE Also FormAlly trAinED in thEEuropEAn ClAssiCAl trADition AnD lEArnED thE prECisE tEChniquEs AnD tonAl sophistiCAtion nECEssAry to plAy in ChAmBEr EnsEmBlEs AnD EvEn At thE opErA housE. howEvEr, in 1894,CrEolEs living in nEw orlEAns wErE ForCED By A rACiAl sEgrEgAtion lAw to movE to thE ArEA oF thE City inhABitED By thE poor, lArgEly unEDuCAtED BlACk populAtion whosE musiCAl trADition wAs typiCAlly ChArACtErizED By mEmorizAtion An
【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.
As FAr As physiCAl AnD CulturAl Anthropologists CAn tEll, spokEn lAnguAgE hAs proBABly BEEn usED By humAns For hunDrEDs oF thousAnDs oF yEArs.
→ 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.
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.
As FAr As physiCAl AnD CulturAl Anthropologists CAn tEll, spokEn lAnguAgE hAs proBABly BEEn usED By humAns For hunDrEDs oF thousAnDs oF yEArs.
→ 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】Listening 1 "Professor’s Office"
{$mediaurl} How is the second part of the reading list different from the first part
A、More minority authors are representeD、
B、All of the writers are from NorthAmericA、
C、It includes books from the Post Modern PerioD、
D、In addition to novels, some plays are on the list.
{$mediaurl} How is the second part of the reading list different from the first part
A、More minority authors are representeD、
B、All of the writers are from NorthAmericA、
C、It includes books from the Post Modern PerioD、
D、In addition to novels, some plays are on the list.
【单选题】 The word "It" in line 14 refers to
A.( Luncheon Still Life
B.( one of the Peales' pieces
C.( a larger scale
D.( the number of objects
A.( Luncheon Still Life
B.( one of the Peales' pieces
C.( a larger scale
D.( the number of objects
【单选题】rEADing 1 "ExotiC AnDEnDAngErED spECiEs"
→ whEn you hEAr somEonE BuBBling EnthusiAstiCAlly ABout An ExotiC spECiEs, you CAn sAFEly BEt thE spEAkEr isn’t An ECologist. this is A nAmE For A rEsiDEnt oF An EstABlishED Community thAt wAs DEliBErAtEly or ACCiDEntAlly movED From its homE rAngE AnD BECAmE EstABlishED ElsEwhErE. unlikE most imports, whiCh CAn’t tAkE holD outsiDE thEir homE rAngE, An ExotiC spECiEs pErmAnEntly insinuAtEs itsElF into A nEw Community.
somEtimEs thE ADDitions ArE hArmlEss AnD EvEn hAvE BEnEFiCiAl EFFECts. morE oFtEn, thEy mAkE nAtivE spECiEs EnDAngErED spECiEs, whiCh By DEFinition ArE ExtrEmEly vulnErABlE to ExtinCtion. oF All spECiEs on thE rArE or EnDAngErED lists or thAt rECEntly BECAmE ExtinCt, ClosE to 70 pErCEnt owE thEir prECArious ExistEnCE or DEmisE to DisplACEmEnt By ExotiC spECiEs. two ExAmplEs ArE inCluDED hErE to illustrAtE thE proBlEm.
During thE 1800s,British sEttlErs inAustrAliA just CoulDn’t BonD with thE koAlAs AnD kAngAroos, so thEy stArtED to import FAmiliAr AnimAls From thEir homElAnD、in 1859, in whAt woulD BE thE stArt oF A wholEsAlE DisAstEr, A northErnAustrAliAn lAnDownEr importED AnD thEn rElEAsED two DozEn wilDEuropEAn rABBits (oryCtolAgus CuniCulus). gooD FooD AnD gooD sport hunting—thAt wAs thE iDEA、An iDEAl rABBit hABitAt with no nAturAl prEDAtors wAs thE rEAlity.
six yEArs lAtEr, thE lAnDownEr hAD killED 20,000 rABBits AnD wAs BEsiEgED By 20,000 morE. thE rABBits DisplACED livEstoCk, EvEn kAngAroos. nowAustrAliA hAs 200 to 300 million hippityhopping through thE southErn hAlF oF thE Country. thEy ovErgrAzE pErEnniAl grAssEs in gooD timEs AnD strip BArk From shruBs AnD trEEs During Droughts. you know whErE thEy’vE BEEn; thEy trAnsForm grAsslAnDs AnD shruBlAnDs into EroDED DEsErts. thEy hAvE BEEn shot AnD poisonED、thEir wArrEns hAvE BEEn plowED unDEr, FumigAtED, AnD DynAmitED、EvEn whEn All-out AssAults rEDuCED thEir populAtion sizE By 70 pErCEnt, thE rApiDly rEproDuCing imports mADE A ComEBACk in lEss thAn A yEAr.DiD thE ConstruCtion oF A 2,000-milE-long FEnCE protECt wEstErnAustrAliA no. rABBits mADE it to thE othEr siDE BEForE workErs FinishED thE FEnCE.
→ in 1951, govErnmEnt workErs introDuCED A myxomA virus By wAy oF milDly inFECtED southAmEriCAn rABBits, its normAl hosts. this virus CAusEs myxomAtosis. thE DisEAsE hAs milD EFFECts on southAmEriCAn rABBits thAt CoEvolvED with thE virus But nEArly AlwAys hAD lEthAl EFFECts on o. CuniCulus.Biting insECts, mAinly mosquitoEs AnD FlEAs, quiCkly trAnsmit thE virus From host to host. hAving no CoEvolvED DEFEnsEs AgAinst thE novEl virus, thEEuropEAn rABBits DiED in DrovEs.But, As you might ExpECt, nAturAl sElECtion hAs sinCE FAvorED rApiD growth oF populAtions oF o. CuniCulus rEsistAnt to thE virus.
→ in 1991, on An uninhABitED islAnD in spEnCEr gulF,AustrAliAn rEsEArChErs rElEAsED A populAtion oF rABBits thAt thEy hAD injECtED with A CAlCivirus. thE rABBits DiED quiCkly AnD rElAtivEly pAinlEssly From BlooD Clots in thEir lungs, hEArts, AnD kiDnEys. in 1995, thE tEst virus EsCApED From thE islAnD, possiBly on insECt vECtors. it hAs BEEn killing 80 to 95 pErCEnt oF thE ADult rABBits inAustrAliAn rEgions.At this writing, rEsEArChErs ArE now quEstioning whEthEr thE CAlCivirus shoulD BE usED on A wiDEsprEAD sCAlE, whEthEr it CAn jump BounDAriEs AnD inFECt AnimAls othEr thAn rABBits (suCh As humAns); AnD whAt thE long-tErm ConsEquEnCEs will BE.
A、vinE CAllED kuDzu (puErAriA loBAtA) wAs DEliBErAtEly importED From jApAn to thE unitED stAtEs, whErE it FACEs no sErious thrEAts From hErBivorEs, pAthogEns, or CompEtitor plAnts. in tEmpErAtE pArts oFAsiA, it is A wEll-BEhAvED lEgumE with A wEll-DEvElopED root systEm. it sEEmED likE A gooD iDEA to usE it to Control Erosion on hills AnD highwAy EmBAnkmEnts in thE southEAstErn unitED stAtEs.
with nothing to stop it, though, ku
→ whEn you hEAr somEonE BuBBling EnthusiAstiCAlly ABout An ExotiC spECiEs, you CAn sAFEly BEt thE spEAkEr isn’t An ECologist. this is A nAmE For A rEsiDEnt oF An EstABlishED Community thAt wAs DEliBErAtEly or ACCiDEntAlly movED From its homE rAngE AnD BECAmE EstABlishED ElsEwhErE. unlikE most imports, whiCh CAn’t tAkE holD outsiDE thEir homE rAngE, An ExotiC spECiEs pErmAnEntly insinuAtEs itsElF into A nEw Community.
somEtimEs thE ADDitions ArE hArmlEss AnD EvEn hAvE BEnEFiCiAl EFFECts. morE oFtEn, thEy mAkE nAtivE spECiEs EnDAngErED spECiEs, whiCh By DEFinition ArE ExtrEmEly vulnErABlE to ExtinCtion. oF All spECiEs on thE rArE or EnDAngErED lists or thAt rECEntly BECAmE ExtinCt, ClosE to 70 pErCEnt owE thEir prECArious ExistEnCE or DEmisE to DisplACEmEnt By ExotiC spECiEs. two ExAmplEs ArE inCluDED hErE to illustrAtE thE proBlEm.
During thE 1800s,British sEttlErs inAustrAliA just CoulDn’t BonD with thE koAlAs AnD kAngAroos, so thEy stArtED to import FAmiliAr AnimAls From thEir homElAnD、in 1859, in whAt woulD BE thE stArt oF A wholEsAlE DisAstEr, A northErnAustrAliAn lAnDownEr importED AnD thEn rElEAsED two DozEn wilDEuropEAn rABBits (oryCtolAgus CuniCulus). gooD FooD AnD gooD sport hunting—thAt wAs thE iDEA、An iDEAl rABBit hABitAt with no nAturAl prEDAtors wAs thE rEAlity.
six yEArs lAtEr, thE lAnDownEr hAD killED 20,000 rABBits AnD wAs BEsiEgED By 20,000 morE. thE rABBits DisplACED livEstoCk, EvEn kAngAroos. nowAustrAliA hAs 200 to 300 million hippityhopping through thE southErn hAlF oF thE Country. thEy ovErgrAzE pErEnniAl grAssEs in gooD timEs AnD strip BArk From shruBs AnD trEEs During Droughts. you know whErE thEy’vE BEEn; thEy trAnsForm grAsslAnDs AnD shruBlAnDs into EroDED DEsErts. thEy hAvE BEEn shot AnD poisonED、thEir wArrEns hAvE BEEn plowED unDEr, FumigAtED, AnD DynAmitED、EvEn whEn All-out AssAults rEDuCED thEir populAtion sizE By 70 pErCEnt, thE rApiDly rEproDuCing imports mADE A ComEBACk in lEss thAn A yEAr.DiD thE ConstruCtion oF A 2,000-milE-long FEnCE protECt wEstErnAustrAliA no. rABBits mADE it to thE othEr siDE BEForE workErs FinishED thE FEnCE.
→ in 1951, govErnmEnt workErs introDuCED A myxomA virus By wAy oF milDly inFECtED southAmEriCAn rABBits, its normAl hosts. this virus CAusEs myxomAtosis. thE DisEAsE hAs milD EFFECts on southAmEriCAn rABBits thAt CoEvolvED with thE virus But nEArly AlwAys hAD lEthAl EFFECts on o. CuniCulus.Biting insECts, mAinly mosquitoEs AnD FlEAs, quiCkly trAnsmit thE virus From host to host. hAving no CoEvolvED DEFEnsEs AgAinst thE novEl virus, thEEuropEAn rABBits DiED in DrovEs.But, As you might ExpECt, nAturAl sElECtion hAs sinCE FAvorED rApiD growth oF populAtions oF o. CuniCulus rEsistAnt to thE virus.
→ in 1991, on An uninhABitED islAnD in spEnCEr gulF,AustrAliAn rEsEArChErs rElEAsED A populAtion oF rABBits thAt thEy hAD injECtED with A CAlCivirus. thE rABBits DiED quiCkly AnD rElAtivEly pAinlEssly From BlooD Clots in thEir lungs, hEArts, AnD kiDnEys. in 1995, thE tEst virus EsCApED From thE islAnD, possiBly on insECt vECtors. it hAs BEEn killing 80 to 95 pErCEnt oF thE ADult rABBits inAustrAliAn rEgions.At this writing, rEsEArChErs ArE now quEstioning whEthEr thE CAlCivirus shoulD BE usED on A wiDEsprEAD sCAlE, whEthEr it CAn jump BounDAriEs AnD inFECt AnimAls othEr thAn rABBits (suCh As humAns); AnD whAt thE long-tErm ConsEquEnCEs will BE.
A、vinE CAllED kuDzu (puErAriA loBAtA) wAs DEliBErAtEly importED From jApAn to thE unitED stAtEs, whErE it FACEs no sErious thrEAts From hErBivorEs, pAthogEns, or CompEtitor plAnts. in tEmpErAtE pArts oFAsiA, it is A wEll-BEhAvED lEgumE with A wEll-DEvElopED root systEm. it sEEmED likE A gooD iDEA to usE it to Control Erosion on hills AnD highwAy EmBAnkmEnts in thE southEAstErn unitED stAtEs.
with nothing to stop it, though, ku
【分析解答题】"Insects"
Read a short passage and then listen to part of a lecture on the same topiC、
Reading Time:45 seconds
Insects
An insect belongs to the class of invertebrates called arthropods. Regardless of size, all adult insects have a similar body structure, which includes a head, a thorax, and an abdomen. The head contains not only the brain and mouth but also the sensory organs, usually a pair of eyes and a pair of antennae. The thorax is the central part of the insect’s body where the wings and legs are attached, allowing the insect to move in the air and on feeding surfaces. Typically, insects have three pairs of legs and two pairs of wings. The third part of the insect’s body structure consists of an abdomen where food is processed and also where the reproductive organs are founD、
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Now listen to part of a lecture in a biology class. The professor is talking about insects.
Question
Describe the structure of an insect and explain why a spider is not strictly considered an insect.
Preparation Time:30 seconds
Recording Time:60 seconds
Read a short passage and then listen to part of a lecture on the same topiC、
Reading Time:45 seconds
Insects
An insect belongs to the class of invertebrates called arthropods. Regardless of size, all adult insects have a similar body structure, which includes a head, a thorax, and an abdomen. The head contains not only the brain and mouth but also the sensory organs, usually a pair of eyes and a pair of antennae. The thorax is the central part of the insect’s body where the wings and legs are attached, allowing the insect to move in the air and on feeding surfaces. Typically, insects have three pairs of legs and two pairs of wings. The third part of the insect’s body structure consists of an abdomen where food is processed and also where the reproductive organs are founD、
{$mediaurl}
Now listen to part of a lecture in a biology class. The professor is talking about insects.
Question
Describe the structure of an insect and explain why a spider is not strictly considered an insect.
Preparation Time:30 seconds
Recording Time:60 seconds
【单选题】 According to the passage, how did later mills differ from the mills differ from the mill built by Oliver Evans
A.(They were located away from large cities
B.(They used new technology to produce power
C.(They did not allow flour to cool before it was placed in Barrels
D.(They combined technology with the outwork system
A.(They were located away from large cities
B.(They used new technology to produce power
C.(They did not allow flour to cool before it was placed in Barrels
D.(They combined technology with the outwork system
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