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A．委中 B，瞳子髎 C．承泣 D，肩井
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胆经的首穴是
瞳子髎
睛明
承泣
丝竹空
既可直刺深刺又可针刺放血的腧穴是
肩井
承泣
瞳子髎
委中
既可直刺深刺又可针刺放血的腧穴是
委中
瞳子髎
承泣
D，肩井
针刺操作时应注意轻慢压的腧穴是
肩井
承泣
瞳子髎
委中
百会
既可直刺深刺又可针刺放血的腧穴是
肩井
承泣
瞳子髎
委中
百会
针刺操作时应注意轻慢压的腧穴是
肩井
承泣
瞳子髎
委中
针刺操作时应注意轻慢压的腧穴是
委中
瞳子髎
承泣
D，肩井
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ItisnoteasytotalkabouttheroleofthemassmediainthisoverwhelminglysignificantphaseinEuropeanhistory.Historyandnewsbecomeconfusedandone’simpressionstendtobeamixtureofskepticismandoptimism.46Televisionisoneofthemeansbywhichthesefeelingsarecreatedandconveyed--andperhapsneverbeforehasitservedsomuchtoconnectdifferentpeoplesandnationsasintherecenteventsinEurope.TheEuropethatisnowformingcannotbeanythingotherthanitspeoplestheirculturesandnationalidentifies.WiththisinmindwecanbegintoanalyzetheEuropeantelevisionscene.47InEurope.aselsewheremulti-mediagroupshavebeenincreasinglysuccessful:groupswhichbringtogethertelevisionradionewspapersmagazinesandpublishinghousesthatworkinrelationtooneanother.OneItalianexamplewouldbetheBerlusconigroupwhileabroadMaxwellandMurdochcometomind. Clearlyonlythebiggestandmostflexibletelevisioncompaniesaregoingtobeabletocompeteinsucharichandhotly-contestedmarket.48Thisalonedemonstratesthatthetelevisionbusinessisnotaneasyworldtosurvivein.afactunderlinedbystatisticsthatshowthatoutofeightyEuropeantelevisionnetworksnolessthan50%tookalossin1989. MoreovertheintegrationoftheEuropeancommunitywillobligetelevisioncompaniestocooperatemorecloselyintermsofbothproductionanddistribution. 49CreatingaEuropeanidentitythatrespectsthedifferentculturesandtraditionswhichgotomakeuptheconnectingfabricoftheOldContinentisnoeasytaskanddemandsastrategicchoice―thatofproducingprogramsinEuropeforEurope.ThisentailsreducingourdependenceontheNorthAmericanmarketwhoseprogramsrelatetoexperiencesandculturaltraditionswhicharedifferentfromourown Inordertoachievetheseobjectiveswemustconcentratemoreonco-productionstheexchangeofnewsdocumentaryservicesandtraining.ThisalsoinvolvestheagreementsbetweenEuropeancountriesforthecreationofaEuropeanbankforTelevisionProductionwhichonthemodeloftheEuropeanInvestmentsBankwillhandlethefinancesnecessaryforproductioncosts.50Indealingwithachallengeonsuchascaleitisnoexaggerationtosay.Unitedwestanddividedwefall―andifIhadtochooseasloganitwouldbeUnityinourdiversityAunityofobjectivesthatnonethelessrespectthevariedpeculiaritiesofeachcountry. ItisnoteasytotalkabouttheroleofthemassmediainthisoverwhelminglysignificantphaseinEuropeanhistory.Historyandnewsbecomeconfusedandone’’simpressionstendtobeamixtureofskepticismandoptimism.46Televisionisoneofthemeansbywhichthesefeelingsarecreatedandconveyed--andperhapsneverbeforehasitservedsomuchtoconnectdifferentpeoplesandnationsasintherecenteventsinEurope.TheEuropethatisnowformingcannotbeanythingotherthanitspeoplestheirculturesandnationalidentifies.WiththisinmindwecanbegintoanalyzetheEuropeantelevisionscene.47InEurope.aselsewheremulti-mediagroupshavebeenincreasinglysuccessful:groupswhichbringtogethertelevisionradionewspapersmagazinesandpublishinghousesthatworkinrelationtooneanother.OneItalianexamplewouldbetheBerlusconigroupwhileabroadMaxwellandMurdochcometomind. Clearlyonlythebiggestandmostflexibletelevisioncompaniesaregoingtobeabletocompeteinsucharichandhotly-contestedmarket.48Thisalonedemonstratesthatthetelevisionbusinessisnotaneasyworldtosurvivein.afactunderlinedbystatisticsthatshowthatoutofeightyEuropeantelevisionnetworksnolessthan50%tookalossin1989. MoreovertheintegrationoftheEuropeancommunitywillobligetelevisioncompaniestocooperatemorecloselyintermsofbothproductionanddistribution. 49CreatingaEuropeanidentitythatrespectsthedifferentculturesandtraditionswhichgotomakeuptheconnectingfabricoftheOldContinentisnoeasytaskanddemandsastrategicchoice―thatofproducingprogramsinEuropeforEurope.ThisentailsreducingourdependenceontheNorthAmericanmarketwhoseprogramsrelatetoexperiencesandculturaltraditionswhicharedifferentfromourown Inordertoachievetheseobjectiveswemustconcentratemoreonco-productionstheexchangeofnewsdocumentaryservicesandtraining.ThisalsoinvolvestheagreementsbetweenEuropeancountriesforthecreationofaEuropeanbankforTelevisionProductionwhichonthemodeloftheEuropeanInvestmentsBankwillhandlethefinancesnecessaryforproductioncosts.50Indealingwithachallengeonsuchascaleitisnoexaggerationtosay.Unitedwestanddividedwefall―andifIhadtochooseasloganitwouldbeUnityinourdiversityAunityofobjectivesthatnonethelessrespectthevariedpeculiaritiesofeachcountry.
Doyourememberallthoseyearswhenscientistsarguedthatsmokingwouldkillusbutthedoubtersinsistedthatwedidn’tknowforsure?Thattheevidencewasinconclusivethescienceuncertain?Thattheantismokinglobbywasouttodestroyourwayoflifeandthegovernmentshouldstayoutoftheway?LotsofAmericansboughtthatnonsenseandoverthreedecadessome10millionsmokerswenttoearlygraves. Thereareupsettingparallelstodayasscientistsinonewaveafteranothertrytoawakenustothegrowingthreatofglobalwarming.ThelatestwasapanelfromtheNationalAcademyofSciencesenlistedbytheWhiteHousetotellusthattheEarth’satmosphereisdefinitelywarmingandthattheproblemislargelyman-made.Theclearmessageisthatweshouldgetmovingtoprotectourselves.ThepresidentoftheNationalAcademyBruceAlbertsaddedthiskeypointintheprefacetothepanel’sreport:Scienceneverhasalltheanswers.Butsciencedoesprovideuswiththebestavailableguidetothefutureanditiscriticalthatournationandtheworldbaseimportantpoliciesonthebestjudgmentsthatsciencecanprovideconcerningthefutureconsequencesofpresentactions. Justasonsmokingvoicesnowcomefrommanyquartersinsistingthatthescienceaboutglobalwarmingisincompletethatit’sOKtokeeppouringfumesintotheairuntilweknowforsure.Thisisadangerousgame:bythetime100percentoftheevidenceisinitmaybetoolate.Withtherisksobviousandgrowingaprudentpeoplewouldtakeoutaninsurancepolicynow. FortunatelytheWhiteHouseisstartingtopayattention.Butit’sobviousthatamajorityofthepresident’sadvisersstilldon’ttakeglobalwarmingseriously.Insteadofaplanofactiontheycontinuetopressformoreresearch―aclassiccaseofparalysisbyanalysis. Toserveasresponsiblestewardsoftheplanetwemustpressforwardondeeperatmosphericandoceanicresearch.Butresearchaloneisinadequate.IftheAdministrationwon’ttakethelegislativeinitiativeCongressshouldhelptobeginfashioningconservationmeasures.AbillbyDemocraticSenatorRobertByrdofWestVirginiawhichwouldofferfinancialincentivesforprivateindustryisapromisingstart.Manyseethatthecountryisgettingreadytobuildlotsofnewpowerplantstomeetourenergyneeds.Ifweareevergoingtoprotecttheatmosphereitiscrucialthatthosenewplantsbeenvironmentallysound. Anargumentmadebysupportersofsmokingwasthat
Everybodylovesafatpayrise.Yetpleasureatyourowncanvanishifyoulearnthatacolleaguehasbeengivenabiggerone.Indeedifhehasareputationforslackingyoumightevenbeoutraged.Suchbehaviourisregardedasalltoohumanwiththeunderlyingassumptionthatotheranimalswouldnotbecapableofthisfinelydevelopedsenseofgrievance.ButastudybySarahBrosnanandFransdeWaalofEmoryUniversityinAtlantaGeorgiawhichhasjustbeenpublishedinNaturesuggeststhatitisalltoomonkeyaswell. Theresearchersstudiedthebehaviouroffemalebrowncapuchinmonkeys.Theylookcute.Theyaregood-naturedco-operativecreaturesandtheysharetheirfoodreadily.Aboveallliketheirfemalehumancounterpartstheytendtopaymuchcloserattentiontothevalueofgoodsandservicesthanmales. SuchcharacteristicsmakethemperfectcandidatesforDr.Brosnan’sandDr.deWaal’sstudy.Theresearchersspenttwoyearsteachingtheirmonkeystoexchangetokensforfood.Normallythemonkeyswerehappyenoughtoexchangepiecesofrockforslicesofcucumber.Howeverwhentwomonkeyswereplacedinseparatebutadjoiningchamberssothateachcouldobservewhattheotherwasgettinginreturnforitsrocktheirbehaviourbecamemarkedlydifferent. Intheworldofcapuchinsgrapesareluxurygoodsandmuchpreferabletocucumbers.Sowhenonemonkeywashandedagrapeinexchangeforhertokenthesecondwasreluctanttohandhersoverforamerepieceofcucumber.Andifonereceivedagrapewithouthavingtoprovidehertokeninexchangeatalltheothereithertossedherowntokenattheresearcheroroutofthechamberorrefusedtoacceptthesliceofcucumber.Indeedthemerepresenceofagrapeintheotherchamberwithoutanactualmonkeytoeatitwasenoughtoinduceresentmentinafemalecapuchin. Theresearcherssuggestthatcapuchinmonkeyslikehumansareguidedbysocialemotions.Inthewildtheyareaco-operativegroup-livingspecies.Suchco-operationislikelytobestableonlywheneachanimalfeelsitisnotbeingcheated.Feelingsofrighteousndignationitseemsarenotthepreserveofpeoplealone.Refusingalesserrewardcompletelymakesthesefeelingsabundantlycleartoothermembersofthegroup.Howeverwhethersuchasenseoffairnessevolvedindependentlyincapuchinsandhumansorwhetheritstemsfromthecommonancestorthatthespecieshad35millionyearsagoisasyetanunansweredquestion. ThestatementitisalltoomonkeyLastlineParagraph1impliesthat
ItisnoteasytotalkabouttheroleofthemassmediainthisoverwhelminglysignificantphaseinEuropeanhistory.Historyandnewsbecomeconfusedandone’simpressionstendtobeamixtureofskepticismandoptimism.46Televisionisoneofthemeansbywhichthesefeelingsarecreatedandconveyed--andperhapsneverbeforehasitservedsomuchtoconnectdifferentpeoplesandnationsasintherecenteventsinEurope.TheEuropethatisnowformingcannotbeanythingotherthanitspeoplestheirculturesandnationalidentifies.WiththisinmindwecanbegintoanalyzetheEuropeantelevisionscene.47InEurope.aselsewheremulti-mediagroupshavebeenincreasinglysuccessful:groupswhichbringtogethertelevisionradionewspapersmagazinesandpublishinghousesthatworkinrelationtooneanother.OneItalianexamplewouldbetheBerlusconigroupwhileabroadMaxwellandMurdochcometomind. Clearlyonlythebiggestandmostflexibletelevisioncompaniesaregoingtobeabletocompeteinsucharichandhotly-contestedmarket.48Thisalonedemonstratesthatthetelevisionbusinessisnotaneasyworldtosurvivein.afactunderlinedbystatisticsthatshowthatoutofeightyEuropeantelevisionnetworksnolessthan50%tookalossin1989. MoreovertheintegrationoftheEuropeancommunitywillobligetelevisioncompaniestocooperatemorecloselyintermsofbothproductionanddistribution. 49CreatingaEuropeanidentitythatrespectsthedifferentculturesandtraditionswhichgotomakeuptheconnectingfabricoftheOldContinentisnoeasytaskanddemandsastrategicchoice―thatofproducingprogramsinEuropeforEurope.ThisentailsreducingourdependenceontheNorthAmericanmarketwhoseprogramsrelatetoexperiencesandculturaltraditionswhicharedifferentfromourown Inordertoachievetheseobjectiveswemustconcentratemoreonco-productionstheexchangeofnewsdocumentaryservicesandtraining.ThisalsoinvolvestheagreementsbetweenEuropeancountriesforthecreationofaEuropeanbankforTelevisionProductionwhichonthemodeloftheEuropeanInvestmentsBankwillhandlethefinancesnecessaryforproductioncosts.50Indealingwithachallengeonsuchascaleitisnoexaggerationtosay.Unitedwestanddividedwefall―andifIhadtochooseasloganitwouldbeUnityinourdiversityAunityofobjectivesthatnonethelessrespectthevariedpeculiaritiesofeachcountry.
下列选项中根据相生规律确定的治疗方法是
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire. Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Everybodylovesafatpayrise.Yetpleasureatyourowncanvanishifyoulearnthatacolleaguehasbeengivenabiggerone.Indeedifhehasareputationforslackingyoumightevenbeoutraged.Suchbehaviourisregardedasalltoohumanwiththeunderlyingassumptionthatotheranimalswouldnotbecapableofthisfinelydevelopedsenseofgrievance.ButastudybySarahBrosnanandFransdeWaalofEmoryUniversityinAtlantaGeorgiawhichhasjustbeenpublishedinNaturesuggeststhatitisalltoomonkeyaswell. Theresearchersstudiedthebehaviouroffemalebrowncapuchinmonkeys.Theylookcute.Theyaregood-naturedco-operativecreaturesandtheysharetheirfoodreadily.Aboveallliketheirfemalehumancounterpartstheytendtopaymuchcloserattentiontothevalueofgoodsandservicesthanmales. SuchcharacteristicsmakethemperfectcandidatesforDr.Brosnan’sandDr.deWaal’sstudy.Theresearchersspenttwoyearsteachingtheirmonkeystoexchangetokensforfood.Normallythemonkeyswerehappyenoughtoexchangepiecesofrockforslicesofcucumber.Howeverwhentwomonkeyswereplacedinseparatebutadjoiningchamberssothateachcouldobservewhattheotherwasgettinginreturnforitsrocktheirbehaviourbecamemarkedlydifferent. Intheworldofcapuchinsgrapesareluxurygoodsandmuchpreferabletocucumbers.Sowhenonemonkeywashandedagrapeinexchangeforhertokenthesecondwasreluctanttohandhersoverforamerepieceofcucumber.Andifonereceivedagrapewithouthavingtoprovidehertokeninexchangeatalltheothereithertossedherowntokenattheresearcheroroutofthechamberorrefusedtoacceptthesliceofcucumber.Indeedthemerepresenceofagrapeintheotherchamberwithoutanactualmonkeytoeatitwasenoughtoinduceresentmentinafemalecapuchin. Theresearcherssuggestthatcapuchinmonkeyslikehumansareguidedbysocialemotions.Inthewildtheyareaco-operativegroup-livingspecies.Suchco-operationislikelytobestableonlywheneachanimalfeelsitisnotbeingcheated.Feelingsofrighteousndignationitseemsarenotthepreserveofpeoplealone.Refusingalesserrewardcompletelymakesthesefeelingsabundantlycleartoothermembersofthegroup.Howeverwhethersuchasenseoffairnessevolvedindependentlyincapuchinsandhumansorwhetheritstemsfromthecommonancestorthatthespecieshad35millionyearsagoisasyetanunansweredquestion. Dr.BrosnanandDr.deWaalhaveeventuallyfoundintheirstudythatthemonkeys
Doyourememberallthoseyearswhenscientistsarguedthatsmokingwouldkillusbutthedoubtersinsistedthatwedidn’tknowforsure?Thattheevidencewasinconclusivethescienceuncertain?Thattheantismokinglobbywasouttodestroyourwayoflifeandthegovernmentshouldstayoutoftheway?LotsofAmericansboughtthatnonsenseandoverthreedecadessome10millionsmokerswenttoearlygraves. Thereareupsettingparallelstodayasscientistsinonewaveafteranothertrytoawakenustothegrowingthreatofglobalwarming.ThelatestwasapanelfromtheNationalAcademyofSciencesenlistedbytheWhiteHousetotellusthattheEarth’satmosphereisdefinitelywarmingandthattheproblemislargelyman-made.Theclearmessageisthatweshouldgetmovingtoprotectourselves.ThepresidentoftheNationalAcademyBruceAlbertsaddedthiskeypointintheprefacetothepanel’sreport:Scienceneverhasalltheanswers.Butsciencedoesprovideuswiththebestavailableguidetothefutureanditiscriticalthatournationandtheworldbaseimportantpoliciesonthebestjudgmentsthatsciencecanprovideconcerningthefutureconsequencesofpresentactions. Justasonsmokingvoicesnowcomefrommanyquartersinsistingthatthescienceaboutglobalwarmingisincompletethatit’sOKtokeeppouringfumesintotheairuntilweknowforsure.Thisisadangerousgame:bythetime100percentoftheevidenceisinitmaybetoolate.Withtherisksobviousandgrowingaprudentpeoplewouldtakeoutaninsurancepolicynow. FortunatelytheWhiteHouseisstartingtopayattention.Butit’sobviousthatamajorityofthepresident’sadvisersstilldon’ttakeglobalwarmingseriously.Insteadofaplanofactiontheycontinuetopressformoreresearch―aclassiccaseofparalysisbyanalysis. Toserveasresponsiblestewardsoftheplanetwemustpressforwardondeeperatmosphericandoceanicresearch.Butresearchaloneisinadequate.IftheAdministrationwon’ttakethelegislativeinitiativeCongressshouldhelptobeginfashioningconservationmeasures.AbillbyDemocraticSenatorRobertByrdofWestVirginiawhichwouldofferfinancialincentivesforprivateindustryisapromisingstart.Manyseethatthecountryisgettingreadytobuildlotsofnewpowerplantstomeetourenergyneeds.Ifweareevergoingtoprotecttheatmosphereitiscrucialthatthosenewplantsbeenvironmentallysound. WhatdoestheauthormeanbyparalysisbyanalysisLastlineParagraph4?
Writeanessayof160-200wordsbasedonthefollowingdrawing.Inyouressayyoushouldfirstdescribethedrawingtheninterpretitsmeaningandgiveyourcommentonit. YoushouldwriteneatlyonANSWERSHEET2.20points[*]
Ofallthecomponentsofagoodnight’ssleepdreamsseemtobeleastwithinourcontrol.Indreamsawindowopensintoaworldwherelogicissuspendedanddeadpeoplespeak.AcenturyagoFreudformulatedhisrevolutionarytheorythatdreamswerethedisguisedshadowsofourunconsciousdesiresandfears;bythelate1970sneurologistshadswitchedtothinkingofthemasjustmentalnoise―therandombyproductsoftheneural-repairworkthatgoesonduringsleep.Nowresearcherssuspectthatdreamsarepartofthemind’semotionalthermostatregulatingmoodswhilethebrainisoff-line.Andoneleadingauthoritysaysthattheseintenselypowerfulmentaleventscanbenotonlyharnessedbutactuallybroughtunderconsciouscontroltohelpussleepandfeelbetter.It’syourdreamsaysRosalindCartwrightchairofpsychologyatChicago’sMedicalCenter.Ifyoudon’tlikeitchangeit. Evidencefrombrainimagingsupportsthisview.ThebrainisasactiveduringREMrapideyemovementsleep―whenmostvividdreamsoccur―asitiswhenfullyawakesaysDr.EricNofzingerattheUniversityofPittsburgh.Butnotallpartsofthebrainareequallyinvolved;thelimbicsystemtheemotionalbrainisespeciallyactivewhiletheprefrontalcortexthecenterofintellectandreasoningisrelativelyquiet.WewakeupfromdreamshappyordepressedandthosefeelingscanstaywithusalldaysaysStanfordsleepresearcherDr.WilliamDement. ThelinkbetweendreamsandemotionsshowsupamongthepatientsinCartwright’sclinic.Mostpeopleseemtohavemorebaddreamsearlyinthenightprogressingtowardhappieronesbeforeawakeningsuggestingthattheyareworkingthroughnegativefeelingsgeneratedduringtheday.Becauseourconsciousmindisoccupiedwithdailylifewedon’talwaysthinkabouttheemotionalsignificanceoftheday’sevents―untilitappearswebegintodream. Andthisprocessneednotbelefttotheunconscious.Cartwrightbelievesonecanexerciseconsciouscontroloverrecurringbaddreams.Assoonasyouawakenidentifywhatisupsettingaboutthedream.Visualizehowyouwouldlikeittoendinstead;thenexttimeitoccurstrytowakeupjustenoughtocontrolitscourse.Withmuchpracticepeoplecanlearntoliterallydoitintheirsleep. Attheendofthedaythere’sprobablylittlereasontopayattentiontoourdreamsatallunlesstheykeepusfromsleepingorwewakeupinapanicCartwrightsays.Terrorismeconomicuncertaintiesandgeneralfeelingsofinsecurityhaveincreasedpeople’sanxiety.Thosesufferingfrompersistentnightmaresshouldseekhelpfromatherapist.Fortherestofusthebrainhasitswaysofworkingthroughbadfeelings.Sleeporratherdream―onitandyou’llfeelbetterinthemorning. WhatadvicemightCartwrightgivetothosewhosometimeshavebaddreams?
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Ofallthecomponentsofagoodnight’ssleepdreamsseemtobeleastwithinourcontrol.Indreamsawindowopensintoaworldwherelogicissuspendedanddeadpeoplespeak.AcenturyagoFreudformulatedhisrevolutionarytheorythatdreamswerethedisguisedshadowsofourunconsciousdesiresandfears;bythelate1970sneurologistshadswitchedtothinkingofthemasjustmentalnoise―therandombyproductsoftheneural-repairworkthatgoesonduringsleep.Nowresearcherssuspectthatdreamsarepartofthemind’semotionalthermostatregulatingmoodswhilethebrainisoff-line.Andoneleadingauthoritysaysthattheseintenselypowerfulmentaleventscanbenotonlyharnessedbutactuallybroughtunderconsciouscontroltohelpussleepandfeelbetter.It’syourdreamsaysRosalindCartwrightchairofpsychologyatChicago’sMedicalCenter.Ifyoudon’tlikeitchangeit. Evidencefrombrainimagingsupportsthisview.ThebrainisasactiveduringREMrapideyemovementsleep―whenmostvividdreamsoccur―asitiswhenfullyawakesaysDr.EricNofzingerattheUniversityofPittsburgh.Butnotallpartsofthebrainareequallyinvolved;thelimbicsystemtheemotionalbrainisespeciallyactivewhiletheprefrontalcortexthecenterofintellectandreasoningisrelativelyquiet.WewakeupfromdreamshappyordepressedandthosefeelingscanstaywithusalldaysaysStanfordsleepresearcherDr.WilliamDement. ThelinkbetweendreamsandemotionsshowsupamongthepatientsinCartwright’sclinic.Mostpeopleseemtohavemorebaddreamsearlyinthenightprogressingtowardhappieronesbeforeawakeningsuggestingthattheyareworkingthroughnegativefeelingsgeneratedduringtheday.Becauseourconsciousmindisoccupiedwithdailylifewedon’talwaysthinkabouttheemotionalsignificanceoftheday’sevents―untilitappearswebegintodream. Andthisprocessneednotbelefttotheunconscious.Cartwrightbelievesonecanexerciseconsciouscontroloverrecurringbaddreams.Assoonasyouawakenidentifywhatisupsettingaboutthedream.Visualizehowyouwouldlikeittoendinstead;thenexttimeitoccurstrytowakeupjustenoughtocontrolitscourse.Withmuchpracticepeoplecanlearntoliterallydoitintheirsleep. Attheendofthedaythere’sprobablylittlereasontopayattentiontoourdreamsatallunlesstheykeepusfromsleepingorwewakeupinapanicCartwrightsays.Terrorismeconomicuncertaintiesandgeneralfeelingsofinsecurityhaveincreasedpeople’sanxiety.Thosesufferingfrompersistentnightmaresshouldseekhelpfromatherapist.Fortherestofusthebrainhasitswaysofworkingthroughbadfeelings.Sleeporratherdream―onitandyou’llfeelbetterinthemorning. Thenegativefeelingsgeneratedduringthedaytendto
通常遗传学中的连锁分析难以区分同一染色体上相距很远的基因和非同源染色体上独立分配的基因特别是在两个基因间交换值大于40%接近于50%时 1．请你设计一个遗传学实验来判断果蝇中的两个形态标记基因究竟是在同一染色体上相距很远的位置还是位于非同源染色体上 2．请你设计一个体细胞遗传学的实验来判断人类中一个抗药性标记基因和一个控制营养的标记基因是在同一染色体上相距很远的位置还是位于非同源染色体上 注意在这两个实验中均不能采取原位分子杂交的方法
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Ofallthecomponentsofagoodnight’ssleepdreamsseemtobeleastwithinourcontrol.Indreamsawindowopensintoaworldwherelogicissuspendedanddeadpeoplespeak.AcenturyagoFreudformulatedhisrevolutionarytheorythatdreamswerethedisguisedshadowsofourunconsciousdesiresandfears;bythelate1970sneurologistshadswitchedtothinkingofthemasjustmentalnoise―therandombyproductsoftheneural-repairworkthatgoesonduringsleep.Nowresearcherssuspectthatdreamsarepartofthemind’semotionalthermostatregulatingmoodswhilethebrainisoff-line.Andoneleadingauthoritysaysthattheseintenselypowerfulmentaleventscanbenotonlyharnessedbutactuallybroughtunderconsciouscontroltohelpussleepandfeelbetter.It’syourdreamsaysRosalindCartwrightchairofpsychologyatChicago’sMedicalCenter.Ifyoudon’tlikeitchangeit. Evidencefrombrainimagingsupportsthisview.ThebrainisasactiveduringREMrapideyemovementsleep―whenmostvividdreamsoccur―asitiswhenfullyawakesaysDr.EricNofzingerattheUniversityofPittsburgh.Butnotallpartsofthebrainareequallyinvolved;thelimbicsystemtheemotionalbrainisespeciallyactivewhiletheprefrontalcortexthecenterofintellectandreasoningisrelativelyquiet.WewakeupfromdreamshappyordepressedandthosefeelingscanstaywithusalldaysaysStanfordsleepresearcherDr.WilliamDement. ThelinkbetweendreamsandemotionsshowsupamongthepatientsinCartwright’sclinic.Mostpeopleseemtohavemorebaddreamsearlyinthenightprogressingtowardhappieronesbeforeawakeningsuggestingthattheyareworkingthroughnegativefeelingsgeneratedduringtheday.Becauseourconsciousmindisoccupiedwithdailylifewedon’talwaysthinkabouttheemotionalsignificanceoftheday’sevents―untilitappearswebegintodream. Andthisprocessneednotbelefttotheunconscious.Cartwrightbelievesonecanexerciseconsciouscontroloverrecurringbaddreams.Assoonasyouawakenidentifywhatisupsettingaboutthedream.Visualizehowyouwouldlikeittoendinstead;thenexttimeitoccurstrytowakeupjustenoughtocontrolitscourse.Withmuchpracticepeoplecanlearntoliterallydoitintheirsleep. Attheendofthedaythere’sprobablylittlereasontopayattentiontoourdreamsatallunlesstheykeepusfromsleepingorwewakeupinapanicCartwrightsays.Terrorismeconomicuncertaintiesandgeneralfeelingsofinsecurityhaveincreasedpeople’sanxiety.Thosesufferingfrompersistentnightmaresshouldseekhelpfromatherapist.Fortherestofusthebrainhasitswaysofworkingthroughbadfeelings.Sleeporratherdream―onitandyou’llfeelbetterinthemorning. Researchershavecometobelievethatdreams
什么叫近交和近交系数如何计算近交系数 上图为一个双表亲结婚所生孩子S的家系请计算S的近交系数
AmericansnolongerexpectpublicfigureswhetherinspeechorinwritingtocommandtheEnglishlanguagewithskillandgift.Nordotheyaspiretosuchcommandthemselves.InhislatestbookDoingOurOwnThing:TheDegradationofLanguageandMusicandWhyWeShouldLikeCareJohnMcWhorteralinguistandcontroversialistofmixedliberalandconservativeviewsseesthetriumphof1960scounter-cultureasresponsibleforthedeclineofformalEnglish. Blamingthepermissive1960sisnothingnewbutthisisnotyetanothercriticismagainstthedeclineineducation.Mr.McWhorter’sacademicspecialityislanguagehistoryandchangeandheseesthegradualdisappearanceofwhomforexampletobenaturalandnomoreregrettablethanthelossofthecase-endingsofOldEnglish. Butthecultoftheauthenticandthepersonaldoingourownthinghasspeltthedeathofformalspeechwritingpoetryandmusic.Whileeventhemodestlyeducatedsoughtanelevatedtonewhentheyputpentopaperbeforethe1960seventhemostwellregardedwritingsincethenhassoughttocapturespokenEnglishonthepage.Equallyinpoetrythehighlypersonalperformativegenreistheonlyformthatcouldclaimrealliveliness.InbothoralandwrittenEnglishtalkingstriumphingoverspeakingspontaneityovercraft. IllustratedwithanentertainingarrayofexamplesfrombothhighandlowculturethetrendthatMr.McWhorterdocumentsisunmistakable.Butitislesscleartotakethequestionofhissubtitlewhyweshouldlikecare.Asalinguistheacknowledgesthatallvarietiesofhumanlanguageincludingnon-standardoneslikeBlackEnglishcanbepowerfullyexpressive--thereexistsnolanguageordialectintheworldthatcannotconveycomplexideas.Heisnotarguingasmanydothatwecannolongerthinkstraightbecausewedonottalkproper. RussianshaveadeeplovefortheirownlanguageandcarrylargechunksofmemorizedpoetryintheirheadswhileItalianpoliticianstendtoelaboratespeechthatwouldseemold-fashionedtomostEnglish-speakers.Mr.McWhorteracknowledgesthatformallanguageisnotstrictlynecessaryandproposesnoradicaleducationreforms--heisreallygrievingoverthelossofsomethingbeautifulmorethanuseful.WenowtakeourEnglishonpaperplatesinsteadofchina.Ashameperhapsbutprobablyaninevitableone. ThewordtalkingLine6Paragraph3denotes
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
AmericansnolongerexpectpublicfigureswhetherinspeechorinwritingtocommandtheEnglishlanguagewithskillandgift.Nordotheyaspiretosuchcommandthemselves.InhislatestbookDoingOurOwnThing:TheDegradationofLanguageandMusicandWhyWeShouldLikeCareJohnMcWhorteralinguistandcontroversialistofmixedliberalandconservativeviewsseesthetriumphof1960scounter-cultureasresponsibleforthedeclineofformalEnglish. Blamingthepermissive1960sisnothingnewbutthisisnotyetanothercriticismagainstthedeclineineducation.Mr.McWhorter’sacademicspecialityislanguagehistoryandchangeandheseesthegradualdisappearanceofwhomforexampletobenaturalandnomoreregrettablethanthelossofthecase-endingsofOldEnglish. Butthecultoftheauthenticandthepersonaldoingourownthinghasspeltthedeathofformalspeechwritingpoetryandmusic.Whileeventhemodestlyeducatedsoughtanelevatedtonewhentheyputpentopaperbeforethe1960seventhemostwellregardedwritingsincethenhassoughttocapturespokenEnglishonthepage.Equallyinpoetrythehighlypersonalperformativegenreistheonlyformthatcouldclaimrealliveliness.InbothoralandwrittenEnglishtalkingstriumphingoverspeakingspontaneityovercraft. IllustratedwithanentertainingarrayofexamplesfrombothhighandlowculturethetrendthatMr.McWhorterdocumentsisunmistakable.Butitislesscleartotakethequestionofhissubtitlewhyweshouldlikecare.Asalinguistheacknowledgesthatallvarietiesofhumanlanguageincludingnon-standardoneslikeBlackEnglishcanbepowerfullyexpressive--thereexistsnolanguageordialectintheworldthatcannotconveycomplexideas.Heisnotarguingasmanydothatwecannolongerthinkstraightbecausewedonottalkproper. RussianshaveadeeplovefortheirownlanguageandcarrylargechunksofmemorizedpoetryintheirheadswhileItalianpoliticianstendtoelaboratespeechthatwouldseemold-fashionedtomostEnglish-speakers.Mr.McWhorteracknowledgesthatformallanguageisnotstrictlynecessaryandproposesnoradicaleducationreforms--heisreallygrievingoverthelossofsomethingbeautifulmorethanuseful.WenowtakeourEnglishonpaperplatesinsteadofchina.Ashameperhapsbutprobablyaninevitableone. ThedescriptionofRussians’’loveofmemorizingpoetryshowstheauthor’’s
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
所谓寒极生热热极生寒是指阴阳的何种变化关系
Doyourememberallthoseyearswhenscientistsarguedthatsmokingwouldkillusbutthedoubtersinsistedthatwedidn’tknowforsure?Thattheevidencewasinconclusivethescienceuncertain?Thattheantismokinglobbywasouttodestroyourwayoflifeandthegovernmentshouldstayoutoftheway?LotsofAmericansboughtthatnonsenseandoverthreedecadessome10millionsmokerswenttoearlygraves. Thereareupsettingparallelstodayasscientistsinonewaveafteranothertrytoawakenustothegrowingthreatofglobalwarming.ThelatestwasapanelfromtheNationalAcademyofSciencesenlistedbytheWhiteHousetotellusthattheEarth’satmosphereisdefinitelywarmingandthattheproblemislargelyman-made.Theclearmessageisthatweshouldgetmovingtoprotectourselves.ThepresidentoftheNationalAcademyBruceAlbertsaddedthiskeypointintheprefacetothepanel’sreport:Scienceneverhasalltheanswers.Butsciencedoesprovideuswiththebestavailableguidetothefutureanditiscriticalthatournationandtheworldbaseimportantpoliciesonthebestjudgmentsthatsciencecanprovideconcerningthefutureconsequencesofpresentactions. Justasonsmokingvoicesnowcomefrommanyquartersinsistingthatthescienceaboutglobalwarmingisincompletethatit’sOKtokeeppouringfumesintotheairuntilweknowforsure.Thisisadangerousgame:bythetime100percentoftheevidenceisinitmaybetoolate.Withtherisksobviousandgrowingaprudentpeoplewouldtakeoutaninsurancepolicynow. FortunatelytheWhiteHouseisstartingtopayattention.Butit’sobviousthatamajorityofthepresident’sadvisersstilldon’ttakeglobalwarmingseriously.Insteadofaplanofactiontheycontinuetopressformoreresearch―aclassiccaseofparalysisbyanalysis. Toserveasresponsiblestewardsoftheplanetwemustpressforwardondeeperatmosphericandoceanicresearch.Butresearchaloneisinadequate.IftheAdministrationwon’ttakethelegislativeinitiativeCongressshouldhelptobeginfashioningconservationmeasures.AbillbyDemocraticSenatorRobertByrdofWestVirginiawhichwouldofferfinancialincentivesforprivateindustryisapromisingstart.Manyseethatthecountryisgettingreadytobuildlotsofnewpowerplantstomeetourenergyneeds.Ifweareevergoingtoprotecttheatmosphereitiscrucialthatthosenewplantsbeenvironmentallysound. Theauthorassociatestheissueofglobalwarmingwiththatofsmokingbecause
干涉
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
天癸至太冲脉盛的生理效应是
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals________thisislargelybecause________animalswestandupright.Thismeansthatournosesare________toperceivingthosesmellswhichfloatthroughtheair________themajorityofsmellswhichsticktosurfaces.Infact________weareextremelysensitivetosmells________wedonotgenerallyrealizeit.Ournosesarecapableof________humansmellsevenwhentheseare________tofarbelowonepartinonemillion. Strangelysomepeoplefindthattheycansmellonetypeofflowerbutnotanother________othersaresensitivetothesmellsofbothflowers.Thismaybebecausesomepeopledonothavethegenesnecessarytogenerate________smellreceptorsinthenose.Thesereceptorsarethecellswhichsensesmellsandsend________tothebrain.Howeverithasbeenfoundthatevenpeopleinsensitivetoacertainsmell________cansuddenlybecomesensitivetoitwhen________toitoftenenough. Theexplanationforinsensitivitytosmellseemstobethatthebrainfindsit________tokeepallsmellreceptorsworkingallthetimebutcan________newreceptorsifnecessary.Thismay________explainwhywearenotusuallysensitivetoourownsmells―wesimplydonotneedtobe.Wearenot________oftheusualsmellofourownhousebutwe________newsmellswhenwevisitsomeoneelse’s.Thebrainfindsitbesttokeepsmellreceptors________forunfamiliarandemergencysignals________thesmellofsmokewhichmightindicatethedangeroffire.
ItisnoteasytotalkabouttheroleofthemassmediainthisoverwhelminglysignificantphaseinEuropeanhistory.Historyandnewsbecomeconfusedandone’simpressionstendtobeamixtureofskepticismandoptimism.46Televisionisoneofthemeansbywhichthesefeelingsarecreatedandconveyed--andperhapsneverbeforehasitservedsomuchtoconnectdifferentpeoplesandnationsasintherecenteventsinEurope.TheEuropethatisnowformingcannotbeanythingotherthanitspeoplestheirculturesandnationalidentifies.WiththisinmindwecanbegintoanalyzetheEuropeantelevisionscene.47InEurope.aselsewheremulti-mediagroupshavebeenincreasinglysuccessful:groupswhichbringtogethertelevisionradionewspapersmagazinesandpublishinghousesthatworkinrelationtooneanother.OneItalianexamplewouldbetheBerlusconigroupwhileabroadMaxwellandMurdochcometomind. Clearlyonlythebiggestandmostflexibletelevisioncompaniesaregoingtobeabletocompeteinsucharichandhotly-contestedmarket.48Thisalonedemonstratesthatthetelevisionbusinessisnotaneasyworldtosurvivein.afactunderlinedbystatisticsthatshowthatoutofeightyEuropeantelevisionnetworksnolessthan50%tookalossin1989. MoreovertheintegrationoftheEuropeancommunitywillobligetelevisioncompaniestocooperatemorecloselyintermsofbothproductionanddistribution. 49CreatingaEuropeanidentitythatrespectsthedifferentculturesandtraditionswhichgotomakeuptheconnectingfabricoftheOldContinentisnoeasytaskanddemandsastrategicchoice―thatofproducingprogramsinEuropeforEurope.ThisentailsreducingourdependenceontheNorthAmericanmarketwhoseprogramsrelatetoexperiencesandculturaltraditionswhicharedifferentfromourown Inordertoachievetheseobjectiveswemustconcentratemoreonco-productionstheexchangeofnewsdocumentaryservicesandtraining.ThisalsoinvolvestheagreementsbetweenEuropeancountriesforthecreationofaEuropeanbankforTelevisionProductionwhichonthemodeloftheEuropeanInvestmentsBankwillhandlethefinancesnecessaryforproductioncosts.50Indealingwithachallengeonsuchascaleitisnoexaggerationtosay.Unitedwestanddividedwefall―andifIhadtochooseasloganitwouldbeUnityinourdiversityAunityofobjectivesthatnonethelessrespectthevariedpeculiaritiesofeachcountry.
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