【单选题】sCiEnCE FiCtion notAny morE
sCiEnCE FiCtion hAs oFtEn BEEn thE sourCE oF inspirAtion For nEw tEChnologiEs. thE ExoskElEtons AnD hEAD-mountED DisplAys FEAturED in thE Film "AliEns", For ExAmplE, spAwnED A numBEr oF militAry-FunDED projECts to try to CrEAtE similAr tEChnologiEs.AutomAtiC sliDing Doors might nEvEr hAvE BEComE populAr hAD thEy not AppEArED on thE tElEvision sEriEs "stAr trEk".AnD thE populArity oF Flip-top or "ClAmshEll" moBilE phonEs mAy stEm From thE DEsirE to look likECAptAin kirk Flipping opEn his CommuniCAtor on thE sAmE progrAm.
now it sEEms thAt "stAr trEk" hAs DonE it AgAin. this month,AmEriCAn solDiErs in irAq will BEgin triAls oF A DEviCE inspirED By thE "Comm BADgE" FEAturED in "stAr trEk: thE nExt gEnErAtion". likE CrEw mEmBErs oF thE stArshipEntErprisE, solDiErs will BE ABlE to tAlk to othEr mEmBErs oF thEir unit just By tApping AnD thEn spEAking into A smAll BADgE worn on thE ChEst. whAt sEts thE Comm BADgE ApArt From A mErE wAlkiE-tAlkiE, AnD AppEAls to "stAr trEk" FAns, is thE systEm’s AppArEnt intElligEnCE. it works out who you ArE CAlling From spokEn CommAnDs, AnD ConnECts you instAntly.
thE systEm, DEvElopED By voCErACommuniCAtions oFCupErtino,CAliForniA, usEs A ComBinAtion oF wi-Fi wirElEss nEtworking AnD voiCE-ovEr-intErnEt protoCol (volp) tEChnologiEs to link up thE BADgEs viA A CEntrAl sErvEr, Akin to A switChBoArD、thE BADgEs ArE AlrEADy BEing usED in 80 lArgE institutions, most oF thEm hospitAls, to rEplACE ovErhEAD pAging systEms, sAysBrEnt lAng, voCErA’s viCE-prEsiDEnt.
likE its sCiEnCE-FiCtion CountErpArt, thE BADgE is DEsignED so thAt All FunCtions CAn BE CArriED out By prEssing A singlE Button. on prEssing it, thE CAllEr givEs A CommAnD AnD spECiFiEs thE nAmE oF A pErson or group oF pEoplE, suCh As "CAllDr. smith" or "loCAtE thE nEArEst AnEsthEsiologist". voiCE-rECognition soFtwArE intErprEts thE CommAnDs AnD loCAtEs thE AppropriAtE pErson or group, BAsED on whiChEvEr wi-Fi BAsE-stAtion thEy ArE ClosEst to. thE pErson rECEiving thE CAll thEn hEArs An AuDiBlE AlErt stAting thE nAmE oF thE CAllEr AnD, iF hE or shE wishEs to tAkE thE CAll, rEsponDs By tApping thE BADgE AnD stArting to spEAk.
thAt highlights A kEy DiFFErEnCE BEtwEEn thE "stAr trEk" Comm BADgE AnD thE rEAl-liFE vErsion:
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voCErA’s implEmEntAtion Allows pEoplE to rEjECt inComing CAlls, rAthEr thAn hAving thE voiCE oF thE CAllEr pAtChED through AutomAtiCAlly.
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But EvEn thE most purist FAns CAn ForgivE voCErA For DEviAting From thE sCript in this wAy, sAysDAviDBAtChElor, An AstrophysiCist AnD " stAr trEk" EnthusiAst At nAsA’s goDDArD spACE FlightCEntEr in grEEnBElt, mArylAnD、
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For thErE ArE, hE notEs, somE Curious AspECts to thE BEhAvior oF thE Comm BADgEs in "stAr trEk".
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whEn thE CAptAin oF thEEntErprisE sAys "piCArD to siCk-BAy: mEDiCAl EmErgEnCy on thE BriDgE", For ExAmplE, his BADgE somEhow ConnECts him to thE siCk-BAy BEForE hE hAs stAtED thE DEstinAtion oF thE CAll.
Allowing BADgE usErs to rEjECt inComing CAlls iF thEy ArE Busy, rAthEr thAn BEing ConnECtED instAntly, wAs A FEAturE ADDED At thE rEquEst oF CustomErs, sAys mr. lAng.But in Almost All othEr rEspECts thE BADgEs work just likE thEir FiCtionAl CountErpArts. this is not vEry surprising, sAys lAwrEnCE krAuss, An AstrophysiCist AtCAsE wEstErn rEsErvE univErsity inClEvElAnD, ohio, AnD thE Author oF "thE physiCs oF stAr trEk". in sCiEnCE FiCtion, AnD pArtiCulArly in "stAr trEk", most proBlEms hAvE tEChnologiCAl FixEs. somEtimEs, it sEEms, thosE FixEs CAn BE AppliED to rEAl-worlD proBlEms too.
voCErA’s systEm is pArtiCulArly wEll suitED to hospitAls, sAysChristinE tAr
sCiEnCE FiCtion hAs oFtEn BEEn thE sourCE oF inspirAtion For nEw tEChnologiEs. thE ExoskElEtons AnD hEAD-mountED DisplAys FEAturED in thE Film "AliEns", For ExAmplE, spAwnED A numBEr oF militAry-FunDED projECts to try to CrEAtE similAr tEChnologiEs.AutomAtiC sliDing Doors might nEvEr hAvE BEComE populAr hAD thEy not AppEArED on thE tElEvision sEriEs "stAr trEk".AnD thE populArity oF Flip-top or "ClAmshEll" moBilE phonEs mAy stEm From thE DEsirE to look likECAptAin kirk Flipping opEn his CommuniCAtor on thE sAmE progrAm.
now it sEEms thAt "stAr trEk" hAs DonE it AgAin. this month,AmEriCAn solDiErs in irAq will BEgin triAls oF A DEviCE inspirED By thE "Comm BADgE" FEAturED in "stAr trEk: thE nExt gEnErAtion". likE CrEw mEmBErs oF thE stArshipEntErprisE, solDiErs will BE ABlE to tAlk to othEr mEmBErs oF thEir unit just By tApping AnD thEn spEAking into A smAll BADgE worn on thE ChEst. whAt sEts thE Comm BADgE ApArt From A mErE wAlkiE-tAlkiE, AnD AppEAls to "stAr trEk" FAns, is thE systEm’s AppArEnt intElligEnCE. it works out who you ArE CAlling From spokEn CommAnDs, AnD ConnECts you instAntly.
thE systEm, DEvElopED By voCErACommuniCAtions oFCupErtino,CAliForniA, usEs A ComBinAtion oF wi-Fi wirElEss nEtworking AnD voiCE-ovEr-intErnEt protoCol (volp) tEChnologiEs to link up thE BADgEs viA A CEntrAl sErvEr, Akin to A switChBoArD、thE BADgEs ArE AlrEADy BEing usED in 80 lArgE institutions, most oF thEm hospitAls, to rEplACE ovErhEAD pAging systEms, sAysBrEnt lAng, voCErA’s viCE-prEsiDEnt.
likE its sCiEnCE-FiCtion CountErpArt, thE BADgE is DEsignED so thAt All FunCtions CAn BE CArriED out By prEssing A singlE Button. on prEssing it, thE CAllEr givEs A CommAnD AnD spECiFiEs thE nAmE oF A pErson or group oF pEoplE, suCh As "CAllDr. smith" or "loCAtE thE nEArEst AnEsthEsiologist". voiCE-rECognition soFtwArE intErprEts thE CommAnDs AnD loCAtEs thE AppropriAtE pErson or group, BAsED on whiChEvEr wi-Fi BAsE-stAtion thEy ArE ClosEst to. thE pErson rECEiving thE CAll thEn hEArs An AuDiBlE AlErt stAting thE nAmE oF thE CAllEr AnD, iF hE or shE wishEs to tAkE thE CAll, rEsponDs By tApping thE BADgE AnD stArting to spEAk.
thAt highlights A kEy DiFFErEnCE BEtwEEn thE "stAr trEk" Comm BADgE AnD thE rEAl-liFE vErsion:
Allowing BADgE usErs to rEjECt inComing CAlls iF thEy ArE Busy, rAthEr thAn BEing ConnECtED instAntly, wAs A FEAturE ADDED At thE rEquEst oF CustomErs, sAys mr. lAng.But in Almost All othEr rEspECts thE BADgEs work just likE thEir FiCtionAl CountErpArts. this is not vEry surprising, sAys lAwrEnCE krAuss, An AstrophysiCist AtCAsE wEstErn rEsErvE univErsity inClEvElAnD, ohio, AnD thE Author oF "thE physiCs oF stAr trEk". in sCiEnCE FiCtion, AnD pArtiCulArly in "stAr trEk", most proBlEms hAvE tEChnologiCAl FixEs. somEtimEs, it sEEms, thosE FixEs CAn BE AppliED to rEAl-worlD proBlEms too.
voCErA’s systEm is pArtiCulArly wEll suitED to hospitAls, sAysChristinE tAr
【单选题】At the time of Columbus’ voyages, Native Americans used an astounding diversity of languages, （）_ the diversity used by Europeans.
A. the greatest by far
B. by far than greater
C. by far the greatest
D. greater by far than
A. the greatest by far
B. by far than greater
C. by far the greatest
D. greater by far than
【单选题】The discovery of freezing has changed our eating habits more than any other related invention. Because many foods contain large amounts of water, they freeze solidly at or just below 32 degrees Fahrenheit. When we lower the temperature to well below the freezing point and prevent air from penetrating the food, we retard the natural process of decay that causes food to spoil. Freezing preserves the flavor and nutrients of food better than any other preservation method. When properly prepared and packed, foods and vegetables can be stored in the freezer for one year.
Most vegetables and some fruits need blanching before they are frozen, and to avoid this step would be an expensive mistake. The result would be a product largely devoid of vitamins and minerals. Proper blanching curtails the enzyme action, which vegetables require during their growth and ripening but which continues after maturation and will lead to decay unless it is almost entirely stopped by blanching. This process is done in two ways, either by plunging vegetables in a large amount of rapidly boiling water for a few minutes or by steaming them. For steam blanching, it is important that timing begin when the water at the bottom of the pot is boiling. Different vegetables require different blanching times, and specified times for each vegetable must be observed. Under-blanching is like no blanching at all, and over-blanching, while stopping the enzyme action, will produce soggy, discolored vegetables.
1.Why does the author mention 32 degrees Fahrenheit?
A.To suggest the storage temperature for most foods
B.To identify the freezing point of water
C.To state the correct setting for a freezer
D.To give the temperature for blanching
2.Why does the author use the term expensive mistake in discussing blanching?
A.To state that blanching is expensive but very effective
B.To warn that not blanching will harm the food’s nutritional value
C.To emphasize the importance of blanching only a few items at a time
D.To show that many people waste food by blanching improperly
Most vegetables and some fruits need blanching before they are frozen, and to avoid this step would be an expensive mistake. The result would be a product largely devoid of vitamins and minerals. Proper blanching curtails the enzyme action, which vegetables require during their growth and ripening but which continues after maturation and will lead to decay unless it is almost entirely stopped by blanching. This process is done in two ways, either by plunging vegetables in a large amount of rapidly boiling water for a few minutes or by steaming them. For steam blanching, it is important that timing begin when the water at the bottom of the pot is boiling. Different vegetables require different blanching times, and specified times for each vegetable must be observed. Under-blanching is like no blanching at all, and over-blanching, while stopping the enzyme action, will produce soggy, discolored vegetables.
1.Why does the author mention 32 degrees Fahrenheit?
A.To suggest the storage temperature for most foods
B.To identify the freezing point of water
C.To state the correct setting for a freezer
D.To give the temperature for blanching
2.Why does the author use the term expensive mistake in discussing blanching?
A.To state that blanching is expensive but very effective
B.To warn that not blanching will harm the food’s nutritional value
C.To emphasize the importance of blanching only a few items at a time
D.To show that many people waste food by blanching improperly
【单选题】rAin is slight ACiDiC EvEn in unpollutED Air, BECAusE CArBon DioxiDE in thE AtmosphErE AnD othEr nAturAl ACiD-Forming gAsEs DissolvE in thEwAtEr.
【单选题】 The work of Sarah Oarne Jewet, care-nineteenth-century writer, reflects a concern in the alienating consequence, of condustrialization and urbanization.
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