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Sydney is home to nearly 4.4 million people...The 57 square kilometer harbour is one of the largest ...
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SydneyTower Address:100MarketSt.Sydney
after 11:30 p.m.
before 11:30 p. m.
at 10:30 p.m.
by 10:30 p. m.
It`snearlyseveno`clock.Jack____bebackhomeatthismom
must
need
could
can
In1978Iwas18andwasworkingasanurseinasmalltownabout
BRISBANE—AustralianOlympicchiefJohnCoateshassaidGr
SydneyTower Address:100MarketSt.Sydney
a piece of news
a conversation
a story
an advertisement
SydneyTower Address:100MarketSt.Sydney
the busiest street
the biggest station
the most beautiful park
the highest point
SydneyTowerAddress:100MarketSt.SydneyPhone:0293339
短文填空请用适当的词完成下列短文每个空只能填写一个形式正确意义相符的单词FridayApril12t
—I’mgoingtoSydneyforaholidaynextweek.—_________!
That’s all right
Have a good time
You’re welcome
What a pity
It’snearlyseveno’clock.Jackbebackhomeatthismoment.
must
need
could
can
SydneyTower Address:100MarketSt.Sydney
e-mail sydneytower @ hotmail, corn
fax 0293339203
search www. sydneytower, com. au
dial 02 9333 9222
Thesettlementishometonearly1000peoplemanyof______l
whom
them
which
those
DearDianaThankyouforthe__36____lovedaywehadwithyou
Californiaishometo4426speciesofplantsandnearlyhalf
which
them
what
that
Thewintervacationisjustaroundthecorner.Withsuchalo
SydneyTower Address:100MarketSt.Sydney
$6O
$9O
$120
$150
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A.remoteplacesattractthetravellerswithpromisesofexcitementB.haschangedalotC.wasuncertainanddangerousD.internationaltravelE.JetsF.confusingandfrustratingWhenyoueatoutthelanguageproblemis______.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
DiabetesMostofthefoodweeatisturnedintoglucoseforourbodiestouseforenergy.Thepancreasanorgannearthestomachmakesahormonecalledinsulintohelpglucosegetintoyourbodycells.Whenyouhavediabetesyourbodyeitherdoesn’tmakeenoughinsulinorcan’tuseitsowninsulinwell.Thisproblemcausesglucosetobuildupinyourblood.Youmayrecallhavingsomeofthesesignsbeforeyoufoundoutyouhaddiabetes:**Beingverythirsty.**Urinatingalotoftenatnight.**Havingunclearvisionfromtimetotime.**Feelingverytiredmuchofthetime.**Losingweightwithouttrying.**Havingverydryskin.**Havingsoresthatareslowtoheal.**Gettingmoreinfectionsthanusual.**Vomiting.TwomaintypesofdiabetesareType1andType2.Anothertypeofdiabetesappearsduringpregnancyinsomewomen.It’scalledgestationaldiabetes.OneoutoftenpeoplewithdiabeteshasTypeIdiabetes.Thesepeopleusuallyfindouttheyhavediabeteswhentheyarechildrenoryoungadults.ThepancreasofapersonwithType1makeslittleornoinsulin.PeoplewithType1diabetesmustinjectinsulineverydaytolive.MostpeoplewithdiabeteshaveType2diabetes.Thepancreasofpeoplewithsuchdiabeteskeepsmakinginsulinforsometimebutthebodycan’tuseitwell.MostpeoplewithType2findoutabouttheirdiabetesafterage30or40.SomeriskfactorswhichmakepeoplemorelikelytogetType2diabetesare:**Afamilyhistoryofdiabetes.**Lackofexercise.**Weighingtoomuch.Diabetescanhurtyoureyesyourkidneysandyournerves.Itcanleadtoproblemswiththebloodcirculationinyourbody.Evenyourteethandgumscanbeharmed.Anddiabetesinpregnancycancausespecialproblems.ApersonwithdiabetesmayhavehadallthefollowingsignsEXCEPT______.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
HighStressMayDamageMemoryAccordingtoareportissuedinMay1998elderlypeoplewhohaveconsistentlyhighbloodlevelsofcortisoldon’tscoreaswellonmemorytestsastheirpeerswithlowerlevelsofthestresshormone.What’smorehighlevelsofcortisolarealsoassociatedwithshrinkingofthehippocampusaregionofthebrainthatplaysakeyroleinlearningandmemory.Thefindingssuggestthatevencortisollevelsinthenormalhealthyrangecanactuallyacceleratebrainaging.Thestudyresultsnowprovidesubstantialevidencethatlong—termexposuretoadrenalstresshormonesmaypromotehippocampalaginginnormalelderlyhumanswriteNadaPorterandPhilipLandfieldoftheUniversityofKentuckyinLexingtonintheireditorial.Cortisolisahormonereleasedinresponsetostressbytheadrenalglandswhichsitontopofthekidneys.Overa5to6—yearperiod.Dr.SoniaLupienandhiscolleaguesmeasured24—hourcortisollevelsin51healthyvolunteersmostofwhomwereintheir70s.Despitewidevariationincortisollevelstheparticipantscouldbedividedintothreesubgroups:thosewhosecortisolprogressivelyincreasedovertimeandwascurrentlyhighincreasing/high;thosewhosecortisolprogressivelyincreasedovertimeandwascurrentlymoderateincreasing/moderate;andsubjectswhosecortisoldecreasedbutwascurrentlymoderatedecreasing/moderate.Theresearcherstestedthevolunteers’memoryonsixpeopleintheincreasing/highcategoryandfivepeopleinthedecreasing/moderategroup.Thegroupsdidnotdifferontestsofimmediatememorybuttheincreasing/highcortisolgrouphadothermemoryproblemscom-paredwiththoseinthedecreasing/moderategroup.Theresearchersalsofoundthatthetotalvolumeofthehippocampusinthoseintheincreasing/highgroupwas14%lowerthanthoseinthedecreasing/moderategroupalthoughtherewerenodifferencesinotherbrainregions.Theresultssuggestthat...brainagingcanbeacceleratedbylevelsofadrenalhormonesthatarenotgenerallyregardedaspathologicalandthatvariationwithinthisnormalrangeisrelatedtovariationintherateofbrainagingwritePorterandLandfield.Thisfurthersuggeststhatchronicstressmayacceleratetheworseningofhippocampus./Whenthetotalvolumeofthehippocampusbecomessmallerotherbrainregions______.
Poorchildrenshouldnotbedeprivedoftheopportunitytoparticipateinsportswheneverpossible.
SupermarketMostsupermarketsneedaverylargefloorareasometimesatleasttentimesasbigasthatofanordinaryshop.Thereareusuallytwodoorsoneasanentranceandtheotherasanexit.Therestofthesidefacingthestreetislargelyofplateglasswithgoodsoradvertisingmaterialdisplayed.Theotherthreewailsarenormallydecoratedinlightcoloursgivinganimpressionofcleanliness清洁andbrightness.Mostsupermarketsareononeflooronly.Goodsbeingstoredinroomsatthebackorupstairs.Atright-anglestothewindowstretchlongstructuresaboutsixfeethighwithanumberofshelvesoneachside.Similarshelfunitsorfrozenfoodcontainersextendroundthewalls.Broadaisles通道betweentheshelfunitsandample足够的spacebetweenthemandthewindowandalsothefarwallallowroomforthecirculationofmanypeople.Individualcommodities商品intinsbagsboxesorothercontainersarestacked堆放ingroupsontheshelvesandeachgroupislabelledwithapriceticket.Metalbasketsneartheentrancearetakenbytheshopperswhocollectinthemthegoodstheyselectfromtheshelves.Betweentheshelfunitsandthewindowinonehalfoftheshopsareanumberofsmallcountersaboutthreefeethigh.Besideeachsitsacashier现金出纳员whooperatesamachineforreckoningdetailingthecostofeachcustomer’spurchases.Thecustomerplacesthebasketatoneendofthecountersothatitcanbeemptiedbythecashierwhorecordsthepriceofthecommoditiesonebyonebeforeputtingeachonamovingsectionofthecountertop.Thegoodsarecollectedandpackedintothecustomer’sbagbyanotherassistantattheendofthecounter.Thecashierfinallyhandsaprintedsliprecordingallpricestothecustomerwhopaysthetotalcollectsthebagandleaves.Asupermarketusuallyhas______.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
A.AttractionsofTravellingB.LanguageProblemWhenEatingOutCRevolutionCausedbyJetsD.HowTravellers’ConcernsAreMetE.TravelIndustryTodayF.TravelConditionsParagraph5______
ChangesofMuseums46Theyarenolongerplacesfortheprivilegedfeworforboredvacationerstovisitonrainydays.47Someoftheoldgraymuseumshavebeenrebuiltandtheneweronesareopenandmodernintheirarchitecture.Insidethereismodernlightingcolorandsound.Insteadofdisplayingeverythingtheyownmuseumdirectorsshowfewerobjectsandleaveopenspaceswherevisitorscangatherandsitdown.Theyalsobringtogetherinonedisplayagroupofobjectsdrawnfromvariouspartsofthemuseuminanefforttorepresentthewholelifestyleofaregionorahistoricalperiod.48Moreandmoremuseumdirectorsarerealizingthatpeoplelearnbestwhentheycansomehowbecomepartofwhattheyareseeing.Inmanysciencemuseumsforexampletherearenoguidedtours.Thevisitorisencouragedtotouchlistenoperateandexperimentsoastodiscoverscientificprinciplesforhimself.Hecanhavetheexperenceofoperatingaspaceshiporacomputer.Hecanexperimentwithglass-blowingandpaper-making.49Thetheoryisthatpeoplewhodonotunderstandsciencewillprobablyfearitandthosewhofearsciencewillnotuseittobestadvantage.Manymuseumsnowprovideeducationalservicesandchildren’sdepartments.Inadditiontotheusualdisplaystheyalsoofferfilmshowingsanddanceprograms.50A.Thepurposeisnotonlytoprovidefunbutalsotohelppeoplefeelathomeintheworldofscience.B.Museumshavechanged.C.Inoneroomforinstanceyoumayfindmaterialsclothingtoolscookingpotsfurnitureandartworksofaparticularplaceandtime.D.Insteadofbeingplacesthatoneshouldvisittheyareplacestoenjoy.E.Thereareopenspacesthatmuseumsleaveforvisitors.F.Manymuseumshavechangedinappearanc
Asanassistantinashopshetriestobecourteousatalltimesevenwhensheisverytired.
A.remoteplacesattractthetravellerswithpromisesofexcitementB.haschangedalotC.wasuncertainanddangerousD.internationaltravelE.JetsF.confusingandfrustratingComparedwiththepasttoday’stravelling______.
Theresearchteamneedstoconferwiththedirectorbeforeitbeginsitsfinalreport.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
Unlikethecommoncoldflutendstostartabruptly.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
Twoeventshavehighlightedthetensionsinrecentyears.
SupermarketMostsupermarketsneedaverylargefloorareasometimesatleasttentimesasbigasthatofanordinaryshop.Thereareusuallytwodoorsoneasanentranceandtheotherasanexit.Therestofthesidefacingthestreetislargelyofplateglasswithgoodsoradvertisingmaterialdisplayed.Theotherthreewailsarenormallydecoratedinlightcoloursgivinganimpressionofcleanliness清洁andbrightness.Mostsupermarketsareononeflooronly.Goodsbeingstoredinroomsatthebackorupstairs.Atright-anglestothewindowstretchlongstructuresaboutsixfeethighwithanumberofshelvesoneachside.Similarshelfunitsorfrozenfoodcontainersextendroundthewalls.Broadaisles通道betweentheshelfunitsandample足够的spacebetweenthemandthewindowandalsothefarwallallowroomforthecirculationofmanypeople.Individualcommodities商品intinsbagsboxesorothercontainersarestacked堆放ingroupsontheshelvesandeachgroupislabelledwithapriceticket.Metalbasketsneartheentrancearetakenbytheshopperswhocollectinthemthegoodstheyselectfromtheshelves.Betweentheshelfunitsandthewindowinonehalfoftheshopsareanumberofsmallcountersaboutthreefeethigh.Besideeachsitsacashier现金出纳员whooperatesamachineforreckoningdetailingthecostofeachcustomer’spurchases.Thecustomerplacesthebasketatoneendofthecountersothatitcanbeemptiedbythecashierwhorecordsthepriceofthecommoditiesonebyonebeforeputtingeachonamovingsectionofthecountertop.Thegoodsarecollectedandpackedintothecustomer’sbagbyanotherassistantattheendofthecounter.Thecashierfinallyhandsaprintedsliprecordingallpricestothecustomerwhopaysthetotalcollectsthebagandleaves.WhichofthefollowingstatementsisNOTtrueaccordingtothepassage
Afterherdeathherpapers—includingunpublishedarticlesandcorrespondence—weredepositedatthelibrary.
HighStressMayDamageMemoryAccordingtoareportissuedinMay1998elderlypeoplewhohaveconsistentlyhighbloodlevelsofcortisoldon’tscoreaswellonmemorytestsastheirpeerswithlowerlevelsofthestresshormone.What’smorehighlevelsofcortisolarealsoassociatedwithshrinkingofthehippocampusaregionofthebrainthatplaysakeyroleinlearningandmemory.Thefindingssuggestthatevencortisollevelsinthenormalhealthyrangecanactuallyacceleratebrainaging.Thestudyresultsnowprovidesubstantialevidencethatlong—termexposuretoadrenalstresshormonesmaypromotehippocampalaginginnormalelderlyhumanswriteNadaPorterandPhilipLandfieldoftheUniversityofKentuckyinLexingtonintheireditorial.Cortisolisahormonereleasedinresponsetostressbytheadrenalglandswhichsitontopofthekidneys.Overa5to6—yearperiod.Dr.SoniaLupienandhiscolleaguesmeasured24—hourcortisollevelsin51healthyvolunteersmostofwhomwereintheir70s.Despitewidevariationincortisollevelstheparticipantscouldbedividedintothreesubgroups:thosewhosecortisolprogressivelyincreasedovertimeandwascurrentlyhighincreasing/high;thosewhosecortisolprogressivelyincreasedovertimeandwascurrentlymoderateincreasing/moderate;andsubjectswhosecortisoldecreasedbutwascurrentlymoderatedecreasing/moderate.Theresearcherstestedthevolunteers’memoryonsixpeopleintheincreasing/highcategoryandfivepeopleinthedecreasing/moderategroup.Thegroupsdidnotdifferontestsofimmediatememorybuttheincreasing/highcortisolgrouphadothermemoryproblemscom-paredwiththoseinthedecreasing/moderategroup.Theresearchersalsofoundthatthetotalvolumeofthehippocampusinthoseintheincreasing/highgroupwas14%lowerthanthoseinthedecreasing/moderategroupalthoughtherewerenodifferencesinotherbrainregions.Theresultssuggestthat...brainagingcanbeacceleratedbylevelsofadrenalhormonesthatarenotgenerallyregardedaspathologicalandthatvariationwithinthisnormalrangeisrelatedtovariationintherateofbrainagingwritePorterandLandfield.Thisfurthersuggeststhatchronicstressmayacceleratetheworseningofhippocampus./Whenthelevelsofcortisolgohigherthehippocampusinthebrainmay______.
SupermarketMostsupermarketsneedaverylargefloorareasometimesatleasttentimesasbigasthatofanordinaryshop.Thereareusuallytwodoorsoneasanentranceandtheotherasanexit.Therestofthesidefacingthestreetislargelyofplateglasswithgoodsoradvertisingmaterialdisplayed.Theotherthreewailsarenormallydecoratedinlightcoloursgivinganimpressionofcleanliness清洁andbrightness.Mostsupermarketsareononeflooronly.Goodsbeingstoredinroomsatthebackorupstairs.Atright-anglestothewindowstretchlongstructuresaboutsixfeethighwithanumberofshelvesoneachside.Similarshelfunitsorfrozenfoodcontainersextendroundthewalls.Broadaisles通道betweentheshelfunitsandample足够的spacebetweenthemandthewindowandalsothefarwallallowroomforthecirculationofmanypeople.Individualcommodities商品intinsbagsboxesorothercontainersarestacked堆放ingroupsontheshelvesandeachgroupislabelledwithapriceticket.Metalbasketsneartheentrancearetakenbytheshopperswhocollectinthemthegoodstheyselectfromtheshelves.Betweentheshelfunitsandthewindowinonehalfoftheshopsareanumberofsmallcountersaboutthreefeethigh.Besideeachsitsacashier现金出纳员whooperatesamachineforreckoningdetailingthecostofeachcustomer’spurchases.Thecustomerplacesthebasketatoneendofthecountersothatitcanbeemptiedbythecashierwhorecordsthepriceofthecommoditiesonebyonebeforeputtingeachonamovingsectionofthecountertop.Thegoodsarecollectedandpackedintothecustomer’sbagbyanotherassistantattheendofthecounter.Thecashierfinallyhandsaprintedsliprecordingallpricestothecustomerwhopaysthetotalcollectsthebagandleaves.Whatdoesthecustomercollectbeforeheorsheleaves
ChangesofMuseums46Theyarenolongerplacesfortheprivilegedfeworforboredvacationerstovisitonrainydays.47Someoftheoldgraymuseumshavebeenrebuiltandtheneweronesareopenandmodernintheirarchitecture.Insidethereismodernlightingcolorandsound.Insteadofdisplayingeverythingtheyownmuseumdirectorsshowfewerobjectsandleaveopenspaceswherevisitorscangatherandsitdown.Theyalsobringtogetherinonedisplayagroupofobjectsdrawnfromvariouspartsofthemuseuminanefforttorepresentthewholelifestyleofaregionorahistoricalperiod.48Moreandmoremuseumdirectorsarerealizingthatpeoplelearnbestwhentheycansomehowbecomepartofwhattheyareseeing.Inmanysciencemuseumsforexampletherearenoguidedtours.Thevisitorisencouragedtotouchlistenoperateandexperimentsoastodiscoverscientificprinciplesforhimself.Hecanhavetheexperenceofoperatingaspaceshiporacomputer.Hecanexperimentwithglass-blowingandpaper-making.49Thetheoryisthatpeoplewhodonotunderstandsciencewillprobablyfearitandthosewhofearsciencewillnotuseittobestadvantage.Manymuseumsnowprovideeducationalservicesandchildren’sdepartments.Inadditiontotheusualdisplaystheyalsoofferfilmshowingsanddanceprograms.50A.Thepurposeisnotonlytoprovidefunbutalsotohelppeoplefeelathomeintheworldofscience.B.Museumshavechanged.C.Inoneroomforinstanceyoumayfindmaterialsclothingtoolscookingpotsfurnitureandartworksofaparticularplaceandtime.D.Insteadofbeingplacesthatoneshouldvisittheyareplacestoenjoy.E.Thereareopenspacesthatmuseumsleaveforvisitors.F.Manymuseumshavechangedinappearanc
ComingSoontoaTheaternearYou!WhatarespecialeffectsDoyouenjoymoviesthatusealotofspecialeffects.Dinosaurs恐龙fromthedistantpast!Spacebattlesfromthedistantfuture!Therehasbeenarevolutioninspecialeffectsandithastransformedthemovieswesee.Therevolutionbeganinthemid-1970swithGeorgeLucas’sStarWarsafilmthatstunned使震惊audiences.Thatrevolutioncontinuestothepresentwithdramaticchangesinspecialeffectstechnology.ThecompanybehindthesechangesisLucas’sIndustrialLight＆MagicILM.AndthemanbehindthecompanyisDennisMurenwhohasworkedwithLucassinceStarWars.Muren’sinterestinspecialeffectsbeganveryearly.Attheageof6hewasphotographingtoydinosaursandspaceships.At10hehadan8millimetermoviecameraandwasmakingthesethingsmovethroughstopmotion.Stop-motionisaprocessinwhichobjectsareshotwithacameramovedslightlyshotagainandsoon.Whentheshotsareputtogethertheobjectsappeartomove.TalktoMurenandyou’llunderstandwhatILMisallabout;takingonnewchallenges.By1989Murendecidedhehadpushedtheoldtechnologyasfarasitwouldgo.Hesawcomputergraphics图像CGtechnologyasthewaveofthefutureandtookayearoffthemasterit.WithCGtechnologyimagescanbescannedintoacomputerforprocessingforexampleandmanyseparateshotscanbecombinedintoasingleimage.CGtechnologyhasnowreachedthepointMurensayswherespecialeffectscanbeusedtodojustaboutanythingsothatmoviescantellstoriesbetterthaneverbefore.ThehugesuccessofJurassicParkanditssequel续集TheLostWorldthestarsofwhichwerecomputer-generateddinosaurssuggeststhatthismayverywellbetrue.Today’sfilmmakersemphasizespecialeffectsattheexpenseofthestory.
DiabetesMostofthefoodweeatisturnedintoglucoseforourbodiestouseforenergy.Thepancreasanorgannearthestomachmakesahormonecalledinsulintohelpglucosegetintoyourbodycells.Whenyouhavediabetesyourbodyeitherdoesn’tmakeenoughinsulinorcan’tuseitsowninsulinwell.Thisproblemcausesglucosetobuildupinyourblood.Youmayrecallhavingsomeofthesesignsbeforeyoufoundoutyouhaddiabetes:**Beingverythirsty.**Urinatingalotoftenatnight.**Havingunclearvisionfromtimetotime.**Feelingverytiredmuchofthetime.**Losingweightwithouttrying.**Havingverydryskin.**Havingsoresthatareslowtoheal.**Gettingmoreinfectionsthanusual.**Vomiting.TwomaintypesofdiabetesareType1andType2.Anothertypeofdiabetesappearsduringpregnancyinsomewomen.It’scalledgestationaldiabetes.OneoutoftenpeoplewithdiabeteshasTypeIdiabetes.Thesepeopleusuallyfindouttheyhavediabeteswhentheyarechildrenoryoungadults.ThepancreasofapersonwithType1makeslittleornoinsulin.PeoplewithType1diabetesmustinjectinsulineverydaytolive.MostpeoplewithdiabeteshaveType2diabetes.Thepancreasofpeoplewithsuchdiabeteskeepsmakinginsulinforsometimebutthebodycan’tuseitwell.MostpeoplewithType2findoutabouttheirdiabetesafterage30or40.SomeriskfactorswhichmakepeoplemorelikelytogetType2diabetesare:**Afamilyhistoryofdiabetes.**Lackofexercise.**Weighingtoomuch.Diabetescanhurtyoureyesyourkidneysandyournerves.Itcanleadtoproblemswiththebloodcirculationinyourbody.Evenyourteethandgumscanbeharmed.Anddiabetesinpregnancycancausespecialproblems.WhenyouhaveType2diabetesitissometimespossibletofindthat______.
A.AttractionsofTravellingB.LanguageProblemWhenEatingOutCRevolutionCausedbyJetsD.HowTravellers’ConcernsAreMetE.TravelIndustryTodayF.TravelConditionsParagraph3______
Youdon'tneedtocarrylargeamountsofcash;actuallyallfinancialbusinesswillbeconductedbycomputers.
DriedFoodsCenturiesagomandiscoveredthatremovingmoisture51foodhelpedtopreserveitandthattheeasiestwaytodothiswastoexposethefoodtothesunandwind.Inthis52theNorthAmericanIndiansproducedriedmeatandmakeitintocakestheScandinaviansmake53fishandtheArabsmakedrieddates.Allfoodscontain54cabbageandotherleafvegetablescontainasmuchas93%waterpotatoesandotherrootvegetables80%leanmeat75%andfishanythingfrom80%to60%depending55howfattyitis.Ifthiswateris56theactivityofthebacteriawhichcausesfoodtogobadisstopped.Nowdaymostfoodsaredriedmechanically.Themostcommonofsuchdryingistoputfoodinchambers.Thisistheusualmethodfordryingsuchthings58vegetablesmincedmeatandfish.Liquidssuchasmilkcoffeeteasoupsandeggsmaybedried59pouringthemoveraheatedhorizontalsteelcylinderorbysprayingthemintoachamberthrough60acurrentofhotairpasses.Inthefirst61thedriedmaterialisscrapedofftherollerasathinfilmwhichisthenbrokenupintosmallpiecesthoughstillrelativelycoarseflakes.Inthesecondprocessitfailstothebottomofthechamberasafinepowder.Where62piecesofmeatandvegetablesarerequiredasinsouptheingredientsaredriedseparatelyandthenmixed.Driedfoodstakeuplessroomandweighless63thesamefoodpackedincanorfrozenandtheyare64toclimbersexplorersandsoldiersinbattlewhohavelittlestoragespace.Theyarealsopopularwithhousewives65ittakessolittletimetocookthem.Usuallyitisjustamatterofreplacingthedried-outmoisturewithboilingwater.
ChangesofMuseums46Theyarenolongerplacesfortheprivilegedfeworforboredvacationerstovisitonrainydays.47Someoftheoldgraymuseumshavebeenrebuiltandtheneweronesareopenandmodernintheirarchitecture.Insidethereismodernlightingcolorandsound.Insteadofdisplayingeverythingtheyownmuseumdirectorsshowfewerobjectsandleaveopenspaceswherevisitorscangatherandsitdown.Theyalsobringtogetherinonedisplayagroupofobjectsdrawnfromvariouspartsofthemuseuminanefforttorepresentthewholelifestyleofaregionorahistoricalperiod.48Moreandmoremuseumdirectorsarerealizingthatpeoplelearnbestwhentheycansomehowbecomepartofwhattheyareseeing.Inmanysciencemuseumsforexampletherearenoguidedtours.Thevisitorisencouragedtotouchlistenoperateandexperimentsoastodiscoverscientificprinciplesforhimself.Hecanhavetheexperenceofoperatingaspaceshiporacomputer.Hecanexperimentwithglass-blowingandpaper-making.49Thetheoryisthatpeoplewhodonotunderstandsciencewillprobablyfearitandthosewhofearsciencewillnotuseittobestadvantage.Manymuseumsnowprovideeducationalservicesandchildren’sdepartments.Inadditiontotheusualdisplaystheyalsoofferfilmshowingsanddanceprograms.50A.Thepurposeisnotonlytoprovidefunbutalsotohelppeoplefeelathomeintheworldofscience.B.Museumshavechanged.C.Inoneroomforinstanceyoumayfindmaterialsclothingtoolscookingpotsfurnitureandartworksofaparticularplaceandtime.D.Insteadofbeingplacesthatoneshouldvisittheyareplacestoenjoy.E.Thereareopenspacesthatmuseumsleaveforvisitors.F.Manymuseumshavechangedinappearanc
ComingSoontoaTheaternearYou!WhatarespecialeffectsDoyouenjoymoviesthatusealotofspecialeffects.Dinosaurs恐龙fromthedistantpast!Spacebattlesfromthedistantfuture!Therehasbeenarevolutioninspecialeffectsandithastransformedthemovieswesee.Therevolutionbeganinthemid-1970swithGeorgeLucas’sStarWarsafilmthatstunned使震惊audiences.Thatrevolutioncontinuestothepresentwithdramaticchangesinspecialeffectstechnology.ThecompanybehindthesechangesisLucas’sIndustrialLight＆MagicILM.AndthemanbehindthecompanyisDennisMurenwhohasworkedwithLucassinceStarWars.Muren’sinterestinspecialeffectsbeganveryearly.Attheageof6hewasphotographingtoydinosaursandspaceships.At10hehadan8millimetermoviecameraandwasmakingthesethingsmovethroughstopmotion.Stop-motionisaprocessinwhichobjectsareshotwithacameramovedslightlyshotagainandsoon.Whentheshotsareputtogethertheobjectsappeartomove.TalktoMurenandyou’llunderstandwhatILMisallabout;takingonnewchallenges.By1989Murendecidedhehadpushedtheoldtechnologyasfarasitwouldgo.Hesawcomputergraphics图像CGtechnologyasthewaveofthefutureandtookayearoffthemasterit.WithCGtechnologyimagescanbescannedintoacomputerforprocessingforexampleandmanyseparateshotscanbecombinedintoasingleimage.CGtechnologyhasnowreachedthepointMurensayswherespecialeffectscanbeusedtodojustaboutanythingsothatmoviescantellstoriesbetterthaneverbefore.ThehugesuccessofJurassicParkanditssequel续集TheLostWorldthestarsofwhichwerecomputer-generateddinosaurssuggeststhatthismayverywellbetrue.Bythestop-motionprocessmanyseparateshotscanbecombinedintoasingleimage.
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