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AIDS AIDS is Acquired Immune Deficiency Syndrome. The human...
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Electricalappliancessuchastoastersorhairdryersaredesignedtotakeadvantageoftheabilityofanelectriccurrenttoheatawire.
Unabletocontrolhimselfhetorethephonefromhiswife’’shandthenfromthesocketandthrowitacrosstheroom.
OldMothers’ChildrenHaveHigherDiabetes糖尿病Risk Childrenofoldermothersrunahigherriskofdevelopinginsulin-dependent胰岛素依赖型的diabetestheBritishMedicalJournalsaid.Astrongassociationwasfoundbetweenincreasingmaternal母亲的ageatdeliveryandriskofinsulin-dependentdiabetesinthechild.RiskwashighestinfirstbornchildrenanddecreasedprogressivelywithhigherbirthorderProfessorEdwinGaleandcolleaguesatSouthmeadHospitalinBristolsaid.Diabetesisaseriousincurablelifelongdiseasecharacterized以......作为特性byallinabilitytocontroltheamountofsugarintheblood.Insulin-dependentdiabeteswhichmainlyaffectschildrenistreatedbyadministeringthehormoneinsulin.Galelookedinto1375familiesintheOxfordareawhereoneormorechildrenhaddiabetesandfoundthattheriskofachilddevelopinginsulin-dependentdiabetesincreasedby25percentforeachfive-yearbandofthemothersage. Theriskofdevelopingdiabeteswasalsolinkedtotheageofthefather.Foreveryfive-yearbandofthefather’’sagetheriskofthechilddevelopingdiabetesincreasedbyninepercent.Theriskofdiabeteswashigh?estamongthefirstbornchildrenofmotherswhostartedtheirfamilieslateandtheriskdecreasedbyabout15percentforeachsubsequentchildtheBMJsaid.Theolderthemothertheearlierthestartofinsulin-dependentdiabetesinthechild.Otherstudieshavealreadyshownthatchildrenborntooldermothersovertheageof35haveanincreasedriskofdiabetesbutthisstudyisthefirsttoestablishthatriskincreasescontinuouslyinrelationtoincreasingmaternalageDr.PollyBingleyofSouthmeadHospitaltoldReuters路透社.Thenewstudyisthefirsttoshowthatriskisrelatedtobirthorder. Thestudyalsopartlyexplainsincreasingdiabetes.Between1970and1996theproportionofchildrenborntomothersagedbetween30and34increasedto28percentfrom15percentandthiscouldaccountforrisingnumbersofchildhooddiabetespatientsthescientistssaidinthealarmingincreaseintherateofinsulin-dependentdiabetesamongchildreninrecentyears.Thisstudymaywellprovideacluetotheunderstandingofthisproblem.ItismostlikelythatthereareanumberoffactorstoexplaintheincreaseDiabetesUKsaid.Therearesome1.4milliondiagnoseddiabetessufferersinBritainthecharityDiabetesUKsaid.Ofthese1.4millionsufferersthereare20000peopleunderage20whosufferfrominsulin-dependentdiabetes. Whatkindofchildmaybeatthehighestriskofdevelopinginsulin-dependentdiabetes?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
TheAsianFluVirus In1957adoctorinSingaporenoticedthathospitalsweretreatinganunusualnumberofinfluenza-likecases.Influenzaissometimescalledfluorasbadcold.Hetookspecimensfromthethroatsofpatientsinhishospitalandwasabletofindthevirusofthisinfluenza. Therearethreemaintypesoftheinfluenzavirus.ThemostimportantofthesearetypesAandBeachofthemhavingseveralsub-groups.WiththeinstrumentsatthehospitalthedoctorrecognizedthattheoutbreakwasduetoavirusgroupAbuthedidnotknowthesub-group.HereportedtheoutbreaktotheWorldHealthOrganizationinGeneva.W.H.0.publishedtheimportantnewsalongsidereportsofasimilaroutbreakinHongKongwhereabout15%-20%ofthepopulationhadbecomeill. AssoonastheLondondoctorsreceivedthepackageofthroatsamplestheybeganthestandardtests.Theyfoundthatbyreproducingitselfataveryhighspeedthevirushadmultipliedmorethanamilliontimeswithintwodays.Continuingtheircarefulteststhedoctorscheckedtheeffectofdrugsusedagainstalltheknownsub-groupsoftypeAvirusonthisvirus.Noneofthemgaveanyprotection.Thisthenwassomethingnew:anewinfluenzavirusagainstwhichthepeopleoftheworldhadnoreadyhelpwhatsoever. Havingisolatedthevirustheywereworkingwiththetwodoctorsnowconductedtestsonsomespeciallyselectedanimalswhichcontractinfluenzainthesamewayashumanbeingsdo.Inashorttimetheusualsignsofthediseaseappeared.Theseexperimentsrevealedthatthenewvirusspreadeasilybutthatitwasnotakiller.ScientistslikegeneralpubliccalleditsimplyAsianflu. Thewordspecimensinpara1means______.
Competition Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworldsgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequatesupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctioninthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsisinevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties. Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspeciesonlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandfortheoccupancy占有ofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall. Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandproper繁荣;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwarlikeconflictamongnationsisinevitablealthoughcompetitionis. Competitionisessentiallyastruggleforexistence.
HowtoBeaNurse Thephysiciansinahospitalformthecoreofthemedicalstaff.Buttheycouldnotprovideeffectivemedicalcaretotheirpatientswithoutthehelpofnumerousothermedicalemployees.Fromtheviewpointofthepatientsthenursingstaffisparticularlyimportant.Nursesareusuallyinclosecontactwithpatientsaslongastheyareinthehospital. Anursedoesnotstudyforasmanyyearsasadoctor.Howevereachmustbeequallydedicated.Caringforsickpersonsrequiresagreatdealofpatienceandconcern.Mostnursesworklongdaysandtheyoftenmustworkatoddhoursorduringthenight. Underthesupervisionoftheheadnursethenursingstaffmustprovidenursingservicesona24-hourbasisandattendtopatients’needs.Thisresponsibilitycontinuesaroundtheclockandsonursesmustworkinshifts.Ashiftisaperiodofdutyusuallyeightinlength.Thenursesonthewardrotatetheirshifts.Sometaketurnsworkingnightduty;othersworkoddshifts.Allofthemworkoutofacentralareaonthewardcalledthenurses’station. Anursemustalwaysbealert.Shecanneveraffordtobecareless.Thisistrueinallnursingsituationbutitisespeciallytrueintheintensivecareunit.Patientsunderintensivecarearecriticallyillandtheymustbemonitoredatalltimes.Thenurseswhodointensivecaredutyhaveoneofthemostdemandingjobsinthehospital. Servingasanursecanbeaveryrewardingjob.Butitisnotaneasyone.Noteverypersonissuitedtobecomeanurse.Onlyverydedicatedpeoplehavechosennursingasaprofession. WhichofthefollowingisNOTmentionedbytheauthor?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
TheAsianFluVirus In1957adoctorinSingaporenoticedthathospitalsweretreatinganunusualnumberofinfluenza-likecases.Influenzaissometimescalledfluorasbadcold.Hetookspecimensfromthethroatsofpatientsinhishospitalandwasabletofindthevirusofthisinfluenza. Therearethreemaintypesoftheinfluenzavirus.ThemostimportantofthesearetypesAandBeachofthemhavingseveralsub-groups.WiththeinstrumentsatthehospitalthedoctorrecognizedthattheoutbreakwasduetoavirusgroupAbuthedidnotknowthesub-group.HereportedtheoutbreaktotheWorldHealthOrganizationinGeneva.W.H.0.publishedtheimportantnewsalongsidereportsofasimilaroutbreakinHongKongwhereabout15%-20%ofthepopulationhadbecomeill. AssoonastheLondondoctorsreceivedthepackageofthroatsamplestheybeganthestandardtests.Theyfoundthatbyreproducingitselfataveryhighspeedthevirushadmultipliedmorethanamilliontimeswithintwodays.Continuingtheircarefulteststhedoctorscheckedtheeffectofdrugsusedagainstalltheknownsub-groupsoftypeAvirusonthisvirus.Noneofthemgaveanyprotection.Thisthenwassomethingnew:anewinfluenzavirusagainstwhichthepeopleoftheworldhadnoreadyhelpwhatsoever. Havingisolatedthevirustheywereworkingwiththetwodoctorsnowconductedtestsonsomespeciallyselectedanimalswhichcontractinfluenzainthesamewayashumanbeingsdo.Inashorttimetheusualsignsofthediseaseappeared.Theseexperimentsrevealedthatthenewvirusspreadeasilybutthatitwasnotakiller.ScientistslikegeneralpubliccalleditsimplyAsianflu. Themainideaofthispassageisthat______.
ThenumberoftheUnitesStatescitizenswhoareeligibletovotecontinuestoincrease.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 ?????????? ?????????{{B}}TheMagicof Sound{{/B}}??Musicisoneofthemostbeautifulformsofartistic expressionseverinvented.Inmoviesandplaysmusichasanaddedfunction:it notonlymovespeoplebutalsocanshockpeople.Isittruethatanordinary musicalinstrumentcanbesopowerful???Oureardrumscan withstandsoundwithin20to80decibels.Oncesoundexceedsthislimiteven beautifulmusicwillbecomeear-splittingnoiseandharmhealth.Astrongblast ofhighsoundcantwistandbreakasolidironsheet.{{U}}?46 ?{{/U}}??Thenoisefromaplane’sengineisover140decibels. Howeverthesoundofafluteisatmostafewdecibels.{{U}}?47 ?{{/U}}Ithasbeenproventhatpeoplewhohaveworkedinanenvironmentwith ahighsoundintensityforalongtimesuffervaryingdegreesofheartdisease oralteredbrainwaves.??Inmoviessometimestheherocan produceasoundthatordinarypeoplecan’thearandonlythosewhohavethesame abilitycanfeel.Innaturethereisactuallysoundthatisbeyondourhearing. Inphysicsthesoundthatexceeds20000Hziscalledultrasonic.{{U}}?48 ?{{/U}}Itdoesnoharmtohealth.??Soundlessthan20Hzis calledinfrasonicwaves.Whenwemovetheairwillvibrate.{{U}}?49 ?{{/U}}Asthefrequencyofinfrasonicwavesisclosetothatofpeople’s internalorgansinfrasonicwavemaycauseresonanceinhumanbodies.Asa resultpeople’svisionmayweakenandinternalorgansmayrupture.However whetheraninfrasonicwavecanbeusedasaweapondependsonitsintensity.If itsintensityisverylowitwon’tdamageinternalorgansoraperson’shealth. {{U}}?50?{{/U}}Whenwindblowsataforceof3or4overthesea6it willproduceinfrasonicwavesofseveraldecibels.Onlytyphoonscanproduce infrasonicwavesofover100decibels.Atpresentscientistscanonlyproduce infrasonicweaponsinthelabwiththehelpofadvancedscientifictoolsand powerfulelectricpower.A.?Highsoundof150decibelscankilla healthyrat.B.?Thevibrationofaircanproduceinfrasonic waves.C.?Wecannotplayhigh-pitchedmusicwithordinarymusical instruments.D.?Iftheintensityofinfrasonicwaveexceeds160 decibelsitisextremelyharmful.E.?Dolphinswhalesandbatscan makesuchhigh-frequencysound.F.?Thereforethesoundofordinary musicalinstrumentscannotharmyourhealth.
OldMothers’ChildrenHaveHigherDiabetes糖尿病Risk Childrenofoldermothersrunahigherriskofdevelopinginsulin-dependent胰岛素依赖型的diabetestheBritishMedicalJournalsaid.Astrongassociationwasfoundbetweenincreasingmaternal母亲的ageatdeliveryandriskofinsulin-dependentdiabetesinthechild.RiskwashighestinfirstbornchildrenanddecreasedprogressivelywithhigherbirthorderProfessorEdwinGaleandcolleaguesatSouthmeadHospitalinBristolsaid.Diabetesisaseriousincurablelifelongdiseasecharacterized以......作为特性byallinabilitytocontroltheamountofsugarintheblood.Insulin-dependentdiabeteswhichmainlyaffectschildrenistreatedbyadministeringthehormoneinsulin.Galelookedinto1375familiesintheOxfordareawhereoneormorechildrenhaddiabetesandfoundthattheriskofachilddevelopinginsulin-dependentdiabetesincreasedby25percentforeachfive-yearbandofthemothersage. Theriskofdevelopingdiabeteswasalsolinkedtotheageofthefather.Foreveryfive-yearbandofthefather’’sagetheriskofthechilddevelopingdiabetesincreasedbyninepercent.Theriskofdiabeteswashigh?estamongthefirstbornchildrenofmotherswhostartedtheirfamilieslateandtheriskdecreasedbyabout15percentforeachsubsequentchildtheBMJsaid.Theolderthemothertheearlierthestartofinsulin-dependentdiabetesinthechild.Otherstudieshavealreadyshownthatchildrenborntooldermothersovertheageof35haveanincreasedriskofdiabetesbutthisstudyisthefirsttoestablishthatriskincreasescontinuouslyinrelationtoincreasingmaternalageDr.PollyBingleyofSouthmeadHospitaltoldReuters路透社.Thenewstudyisthefirsttoshowthatriskisrelatedtobirthorder. Thestudyalsopartlyexplainsincreasingdiabetes.Between1970and1996theproportionofchildrenborntomothersagedbetween30and34increasedto28percentfrom15percentandthiscouldaccountforrisingnumbersofchildhooddiabetespatientsthescientistssaidinthealarmingincreaseintherateofinsulin-dependentdiabetesamongchildreninrecentyears.Thisstudymaywellprovideacluetotheunderstandingofthisproblem.ItismostlikelythatthereareanumberoffactorstoexplaintheincreaseDiabetesUKsaid.Therearesome1.4milliondiagnoseddiabetessufferersinBritainthecharityDiabetesUKsaid.Ofthese1.4millionsufferersthereare20000peopleunderage20whosufferfrominsulin-dependentdiabetes. AccordingtothepassagethealarmingincreaseintherateofdiabetesamongchildrenintheUKmaypartlybeexplainedbytherisein______.
Shepurchasedaticketandwentuponthetopdeck.
TheAsianFluVirus In1957adoctorinSingaporenoticedthathospitalsweretreatinganunusualnumberofinfluenza-likecases.Influenzaissometimescalledfluorasbadcold.Hetookspecimensfromthethroatsofpatientsinhishospitalandwasabletofindthevirusofthisinfluenza. Therearethreemaintypesoftheinfluenzavirus.ThemostimportantofthesearetypesAandBeachofthemhavingseveralsub-groups.WiththeinstrumentsatthehospitalthedoctorrecognizedthattheoutbreakwasduetoavirusgroupAbuthedidnotknowthesub-group.HereportedtheoutbreaktotheWorldHealthOrganizationinGeneva.W.H.0.publishedtheimportantnewsalongsidereportsofasimilaroutbreakinHongKongwhereabout15%-20%ofthepopulationhadbecomeill. AssoonastheLondondoctorsreceivedthepackageofthroatsamplestheybeganthestandardtests.Theyfoundthatbyreproducingitselfataveryhighspeedthevirushadmultipliedmorethanamilliontimeswithintwodays.Continuingtheircarefulteststhedoctorscheckedtheeffectofdrugsusedagainstalltheknownsub-groupsoftypeAvirusonthisvirus.Noneofthemgaveanyprotection.Thisthenwassomethingnew:anewinfluenzavirusagainstwhichthepeopleoftheworldhadnoreadyhelpwhatsoever. Havingisolatedthevirustheywereworkingwiththetwodoctorsnowconductedtestsonsomespeciallyselectedanimalswhichcontractinfluenzainthesamewayashumanbeingsdo.Inashorttimetheusualsignsofthediseaseappeared.Theseexperimentsrevealedthatthenewvirusspreadeasilybutthatitwasnotakiller.ScientistslikegeneralpubliccalleditsimplyAsianflu. TheAsianfluvirus______.
Competition Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworldsgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequatesupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctioninthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsisinevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties. Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspeciesonlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandfortheoccupancy占有ofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall. Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandproper繁荣;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwarlikeconflictamongnationsisinevitablealthoughcompetitionis. Accordingtotheauthorcompetitiondiffersfromconflictinthatitresultsinwarinmostcases.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
HowtoBeaNurse Thephysiciansinahospitalformthecoreofthemedicalstaff.Buttheycouldnotprovideeffectivemedicalcaretotheirpatientswithoutthehelpofnumerousothermedicalemployees.Fromtheviewpointofthepatientsthenursingstaffisparticularlyimportant.Nursesareusuallyinclosecontactwithpatientsaslongastheyareinthehospital. Anursedoesnotstudyforasmanyyearsasadoctor.Howevereachmustbeequallydedicated.Caringforsickpersonsrequiresagreatdealofpatienceandconcern.Mostnursesworklongdaysandtheyoftenmustworkatoddhoursorduringthenight. Underthesupervisionoftheheadnursethenursingstaffmustprovidenursingservicesona24-hourbasisandattendtopatients’needs.Thisresponsibilitycontinuesaroundtheclockandsonursesmustworkinshifts.Ashiftisaperiodofdutyusuallyeightinlength.Thenursesonthewardrotatetheirshifts.Sometaketurnsworkingnightduty;othersworkoddshifts.Allofthemworkoutofacentralareaonthewardcalledthenurses’station. Anursemustalwaysbealert.Shecanneveraffordtobecareless.Thisistrueinallnursingsituationbutitisespeciallytrueintheintensivecareunit.Patientsunderintensivecarearecriticallyillandtheymustbemonitoredatalltimes.Thenurseswhodointensivecaredutyhaveoneofthemostdemandingjobsinthehospital. Servingasanursecanbeaveryrewardingjob.Butitisnotaneasyone.Noteverypersonissuitedtobecomeanurse.Onlyverydedicatedpeoplehavechosennursingasaprofession. Thenursingstaff______.
HowtoBeaNurse Thephysiciansinahospitalformthecoreofthemedicalstaff.Buttheycouldnotprovideeffectivemedicalcaretotheirpatientswithoutthehelpofnumerousothermedicalemployees.Fromtheviewpointofthepatientsthenursingstaffisparticularlyimportant.Nursesareusuallyinclosecontactwithpatientsaslongastheyareinthehospital. Anursedoesnotstudyforasmanyyearsasadoctor.Howevereachmustbeequallydedicated.Caringforsickpersonsrequiresagreatdealofpatienceandconcern.Mostnursesworklongdaysandtheyoftenmustworkatoddhoursorduringthenight. Underthesupervisionoftheheadnursethenursingstaffmustprovidenursingservicesona24-hourbasisandattendtopatients’needs.Thisresponsibilitycontinuesaroundtheclockandsonursesmustworkinshifts.Ashiftisaperiodofdutyusuallyeightinlength.Thenursesonthewardrotatetheirshifts.Sometaketurnsworkingnightduty;othersworkoddshifts.Allofthemworkoutofacentralareaonthewardcalledthenurses’station. Anursemustalwaysbealert.Shecanneveraffordtobecareless.Thisistrueinallnursingsituationbutitisespeciallytrueintheintensivecareunit.Patientsunderintensivecarearecriticallyillandtheymustbemonitoredatalltimes.Thenurseswhodointensivecaredutyhaveoneofthemostdemandingjobsinthehospital. Servingasanursecanbeaveryrewardingjob.Butitisnotaneasyone.Noteverypersonissuitedtobecomeanurse.Onlyverydedicatedpeoplehavechosennursingasaprofession. Whymustnursesworkinshifts?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
ASmallEvent OneafternooninJanuary1989SuzanSharp43andher8-year-oldsonDavidwerewalkinghardacrossanicyparkinglotwhenSuzan’’scane手杖slidontheice.She【51】facefistintothemud.David【52】toherside.AreyouallrightMom? 【53】Suzanputherselfup.I’’mokayhoney.shesaid. IthadbeennearlytwoyearssinceSuzanhadtroublewalking.Shewasfallingmore【54】now.Everyinchoficewasa【55】dangerforher.Icoulddosomethingtheboythought. Davidtoowashaving【56】ofhisown.Theboyhadaspeechdefect.Atschoolhe【57】askedquestionsorreadaloud. OnedayDavidsteacherannounceda【58】assignment.Eachofyouisgoingtocomeupwithaninventionshesaid.ThiswasforINVENTAMERICA!anationalcompetitiontoencouragecreativityin【59】.AnideahitDavidoneevening.【60】onlyhismotherscanedidn’tsliponicehethought.That’’sit!Davidrealized. WhatifIfixedyourcanetoanailstretchedoutofthebottom?heaskedhismother.Hismothertoldhim【61】itwouldscratchfloors. Itlookslikeaball-pointpen.Youtakeyourhand【62】thebuttonandthenailreturnsbackup.Hourslaterthecanewasfinished.DavidandhisfatherJeff【63】asSuzanusedittowalk50feetacrossthe【64】. Itworks!shesaid.InJuly1989DavidwasdeclarednationalwinnerattheannualINVENTAMERICA!ceremonyinWashingtonD.C.. AsDavidbegantomake【65】appearanceshewasforcedtocommunicatemoreclearly.TodayDavidisnearlyfreeofhiscanewhichiswaitingtobewidelyused. Sotheboywhooncehadtroubletalkingnowhopestostartmakingcanesforpeoplewhohavetroublewalking.
ThestoriesofSarahOrneJewettareconsideredbymanytobemoreauthenticallyregionalthanthoseofBretHarte.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
Itisgreatdecisionfortheyoungboytohavetomake.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 ??????? ??????????? ?????{{B}}SingingAlarmsCouldSavethe Blind{{/B}}??Ifyoucannotseeyoumaynotbeabletofindyour wayoutofaburningbuilding--andthatcouldbefatal.AcompanyinLeeds couldchangeallthat{{U}}?51?{{/U}}directionalsoundalarmscapable ofguidingyoutotheexit.??SoundAlertacompany{{U}}?52 ?{{/U}}theUniversityofLeedsisinstallingthealarmsinaresidential homefor{{U}}?53?{{/U}}peopleinSommersetandaresourcecentrefor theblindinCumbria.{{U}}?54?{{/U}}produceawiderangeof frequenciesthatenablethebraintodeterminewherethe{{U}}?55 ?{{/U}}iscomingfrom.??DeborahWithingtonofSoundAlertsays thatthealarmsusemostofthefrequenciesthatcanbe{{U}}?56?{{/U}} byhumans.Itisaburstofwhitenoise{{U}}?57?{{/U}}peoplesay soundslikestaticontheradioshesays.Itslife-savingpotentialis great.??Sheconductedanexperimentinwhichpeoplewerefilmed bythermal-imagingcamerastryingtofindtheirwayoutofalarge{{U}}?58 ?{{/U}}room.It{{U}}?59?{{/U}}themnearlyfourminutestofindthe door{{U}}?60?{{/U}}asoundalarmbutonly15secondswith one.??Withingtonstudieshowthebrain{{U}}?61 ?{{/U}}soundsattheuniversity.Shesaysthatthe{{U}}?62?{{/U}} ofawidebandoffrequenciescanbepinpointedmoreeasilythanthesourceofa narrowband.Alarms{{U}}?63?{{/U}}thesameconcepthavealreadybeen installedonemergencyvehicles.??Thealarmswillalsoinclude risingorfallingfrequenciestoindicatewhetherpeopleshouldgoup{{U}} ?64?{{/U}}downstairs.Theywere{{U}}?65?{{/U}}withtheaid ofalargegrantfromBritishNuclearFuels.
Themailwasdelayedforaweekbecauseoftheflood.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 ?????????? ?????????{{B}}TheMagicof Sound{{/B}}??Musicisoneofthemostbeautifulformsofartistic expressionseverinvented.Inmoviesandplaysmusichasanaddedfunction:it notonlymovespeoplebutalsocanshockpeople.Isittruethatanordinary musicalinstrumentcanbesopowerful???Oureardrumscan withstandsoundwithin20to80decibels.Oncesoundexceedsthislimiteven beautifulmusicwillbecomeear-splittingnoiseandharmhealth.Astrongblast ofhighsoundcantwistandbreakasolidironsheet.{{U}}?46 ?{{/U}}??Thenoisefromaplane’sengineisover140decibels. Howeverthesoundofafluteisatmostafewdecibels.{{U}}?47 ?{{/U}}Ithasbeenproventhatpeoplewhohaveworkedinanenvironmentwith ahighsoundintensityforalongtimesuffervaryingdegreesofheartdisease oralteredbrainwaves.??Inmoviessometimestheherocan produceasoundthatordinarypeoplecan’thearandonlythosewhohavethesame abilitycanfeel.Innaturethereisactuallysoundthatisbeyondourhearing. Inphysicsthesoundthatexceeds20000Hziscalledultrasonic.{{U}}?48 ?{{/U}}Itdoesnoharmtohealth.??Soundlessthan20Hzis calledinfrasonicwaves.Whenwemovetheairwillvibrate.{{U}}?49 ?{{/U}}Asthefrequencyofinfrasonicwavesisclosetothatofpeople’s internalorgansinfrasonicwavemaycauseresonanceinhumanbodies.Asa resultpeople’svisionmayweakenandinternalorgansmayrupture.However whetheraninfrasonicwavecanbeusedasaweapondependsonitsintensity.If itsintensityisverylowitwon’tdamageinternalorgansoraperson’shealth. {{U}}?50?{{/U}}Whenwindblowsataforceof3or4overthesea6it willproduceinfrasonicwavesofseveraldecibels.Onlytyphoonscanproduce infrasonicwavesofover100decibels.Atpresentscientistscanonlyproduce infrasonicweaponsinthelabwiththehelpofadvancedscientifictoolsand powerfulelectricpower.A.?Highsoundof150decibelscankilla healthyrat.B.?Thevibrationofaircanproduceinfrasonic waves.C.?Wecannotplayhigh-pitchedmusicwithordinarymusical instruments.D.?Iftheintensityofinfrasonicwaveexceeds160 decibelsitisextremelyharmful.E.?Dolphinswhalesandbatscan makesuchhigh-frequencysound.F.?Thereforethesoundofordinary musicalinstrumentscannotharmyourhealth.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 ?????????? ?????????{{B}}TheMagicof Sound{{/B}}??Musicisoneofthemostbeautifulformsofartistic expressionseverinvented.Inmoviesandplaysmusichasanaddedfunction:it notonlymovespeoplebutalsocanshockpeople.Isittruethatanordinary musicalinstrumentcanbesopowerful???Oureardrumscan withstandsoundwithin20to80decibels.Oncesoundexceedsthislimiteven beautifulmusicwillbecomeear-splittingnoiseandharmhealth.Astrongblast ofhighsoundcantwistandbreakasolidironsheet.{{U}}?46 ?{{/U}}??Thenoisefromaplane’sengineisover140decibels. Howeverthesoundofafluteisatmostafewdecibels.{{U}}?47 ?{{/U}}Ithasbeenproventhatpeoplewhohaveworkedinanenvironmentwith ahighsoundintensityforalongtimesuffervaryingdegreesofheartdisease oralteredbrainwaves.??Inmoviessometimestheherocan produceasoundthatordinarypeoplecan’thearandonlythosewhohavethesame abilitycanfeel.Innaturethereisactuallysoundthatisbeyondourhearing. Inphysicsthesoundthatexceeds20000Hziscalledultrasonic.{{U}}?48 ?{{/U}}Itdoesnoharmtohealth.??Soundlessthan20Hzis calledinfrasonicwaves.Whenwemovetheairwillvibrate.{{U}}?49 ?{{/U}}Asthefrequencyofinfrasonicwavesisclosetothatofpeople’s internalorgansinfrasonicwavemaycauseresonanceinhumanbodies.Asa resultpeople’svisionmayweakenandinternalorgansmayrupture.However whetheraninfrasonicwavecanbeusedasaweapondependsonitsintensity.If itsintensityisverylowitwon’tdamageinternalorgansoraperson’shealth. {{U}}?50?{{/U}}Whenwindblowsataforceof3or4overthesea6it willproduceinfrasonicwavesofseveraldecibels.Onlytyphoonscanproduce infrasonicwavesofover100decibels.Atpresentscientistscanonlyproduce infrasonicweaponsinthelabwiththehelpofadvancedscientifictoolsand powerfulelectricpower.A.?Highsoundof150decibelscankilla healthyrat.B.?Thevibrationofaircanproduceinfrasonic waves.C.?Wecannotplayhigh-pitchedmusicwithordinarymusical instruments.D.?Iftheintensityofinfrasonicwaveexceeds160 decibelsitisextremelyharmful.E.?Dolphinswhalesandbatscan makesuchhigh-frequencysound.F.?Thereforethesoundofordinary musicalinstrumentscannotharmyourhealth.{{*HTML*}}
Becauseofherrudenesstocustomersthewaitresshasbeenfired.
Competition Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworldsgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequatesupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctioninthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsisinevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties. Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspeciesonlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandfortheoccupancy占有ofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall. Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandproper繁荣;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwarlikeconflictamongnationsisinevitablealthoughcompetitionis. Theauthorindicatesinthepassagethatconflictcanbeavoided.
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