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CellPhoneLetsYourSecretOutYourcellphoneholdssecretsaboutyou.Besidesthenamesand51thatyou’veprogrammedintoittracesofyourDNAlinger逗留onthedeviceaccordingtoanewstudy.DNAisgeneticmaterialthat52ineverycell.LikeyourfingerprintyourDNAisuniquetoyou53youhaveanidenticaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsaliva唾液orhairleft54atthesceneofacrime.Theresultsoftenhelpdetectivesidentify55andtheirvictims.Yourcellphonecanrevealmoreaboutyou56youmightthink.MeghanJ.McFaddenascientistatMcMasterUniversityinHamiltonOntarioheardaboutacrimeinwhichthesuspectbledontoacellphoneandlaterdroppedthe57.ThismadeherwonderwhethertracesofDNAlingeredoncellphones—evenwhennobloodwasinvolved58sheandcolleagueMargaretWallaceoftheCityUniversityofNewYorkanalyzedtheflip-openphonesof10volunteers.Theyusedswabs药签tocollect59tracesoftheusersfromtwopartsofthephone:theoutsidewheretheuserholdsitandthe60whichisplacedattheuser’sear.Thescientistsscrubbedthephonesusingasolutionmademostly61alcohol.TheaimofwashingwastoremovealldetectabletracesofDNA.Theownersgottheirphones62foranotherweek.Thentheresearcherscollectedthephonesandrepeatedtheswabbingofeachphoneoncemore.ThescientistsdiscoveredDNAthat63tothephone’sspeakeroneachofthephones.BettersampleswerecollectedfromtheoutsideofeachphonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohadapparentlyalsohandledthephone.64DNAshowedupeveninswabsthatweretakenimmediatelyafterthephoneswerescrubbed擦洗.Thatsuggeststhatwashingwon’tremovealltracesofevidencefromacriminal’sdevice.Socellphonescannowbeaddedtothe65ofcluesthatcandecideacrime-sceneinvestigation.
StarQualityAnewanti-cheatingsystemforcountingthejudges’scoresiniceskatingisflawedaccordingtoleadingsportsspecialists.Iceskating’sgoverningbodyannouncedthenewruleslastweekafterconcernsthatajudgeattheWinterOlympicsmayhavebeenunfairlyinfluenced.Initiallythejudgesinthepairsfigure-skatingeventattheWinterOlympicsinSaltLakeCityvoted5to4togivethegoldmedaltoaRussianpaireventhoughtheyhadafallduringtheirroutine.ButtheInternationalSkatingUnionsuspendedtheFrenchjudgeforfailingtorevealthatshehadbeenputunderpressuretovotefortheRussians.TheInternationalOlympicsCommitteethendecidedtogiveasecondgoldtotheCanadianrunners-up亚军.TheISUskating’sgoverningbodynowsaysitintendstochangetherules.Infuture14judgeswilljudgeeacheventbutonly7oftheirscores—selectedatrandom—willcount.TheISUwon’tfinallyapprovethenewsystemuntilitmeetsinJunebutalreadyUKSporttheBritishGovernment’ssportsbodyhasexpressedreservations.IremaintobeconvincedthattherandomselectionsystemwouldoffertheguaranteesthateveryoneconcernedwithethicalsportislookingforsaysJerryBinghamUKSport’sheadofethics伦理.ArandomsystemcanstillbemanipulatedsaysMarkDixonaspecialistonsportsstatisticsfromtheRoyalStatisticalSocietyinLondon.Thescoreofoneortwojudgeswhohavebeennobbled收到贿赂maystillbeinthesevenselected.Manyothersportsthathavejudgesincludingdivinggymnasticsandsynchronizedswimminghaveasystemthatdiscardsthehighestandlowestscores.Ifajudgewasunderpressuretofavouraparticularteamtheywouldtendtogiveitveryhighscoresandmarkdowntheoppositionteamsotheirscoreswouldn’tcount.ItworksfordivingsaysJeffCookamemberoftheinternationalgovernmentbody’stechnicalcommittee.Ifyouremovethoseatthetopandbottomyou’releftwiththoseinthemiddlesoyou’regettingareasonableaverage.Sincethe2000OlympicsinSydneydivinghastightenedupinitssystemstillfurther.Twoseparatepanelsofjudgesscoredifferentroundsofdivingduringtopcompetitions.Neitherpanelknowsthescoresgivenbytheother.WehavedonethistoheadoffanysuggestionofbiassaysCook.BinghamurgedtheISUtoconsiderotheroptions.Thisshouldinvolveexaminingthewayinwhichothersportsdealwiththeproblemofadjudicating裁定onmatterofstyleandpresentationhesays.TheattitudeofthoseconcernedintheUKtothenewrulesproposedbyISUcanbebestdescribedas______.
StarQualityAnewanti-cheatingsystemforcountingthejudges’scoresiniceskatingisflawedaccordingtoleadingsportsspecialists.Iceskating’sgoverningbodyannouncedthenewruleslastweekafterconcernsthatajudgeattheWinterOlympicsmayhavebeenunfairlyinfluenced.Initiallythejudgesinthepairsfigure-skatingeventattheWinterOlympicsinSaltLakeCityvoted5to4togivethegoldmedaltoaRussianpaireventhoughtheyhadafallduringtheirroutine.ButtheInternationalSkatingUnionsuspendedtheFrenchjudgeforfailingtorevealthatshehadbeenputunderpressuretovotefortheRussians.TheInternationalOlympicsCommitteethendecidedtogiveasecondgoldtotheCanadianrunners-up亚军.TheISUskating’sgoverningbodynowsaysitintendstochangetherules.Infuture14judgeswilljudgeeacheventbutonly7oftheirscores—selectedatrandom—willcount.TheISUwon’tfinallyapprovethenewsystemuntilitmeetsinJunebutalreadyUKSporttheBritishGovernment’ssportsbodyhasexpressedreservations.IremaintobeconvincedthattherandomselectionsystemwouldoffertheguaranteesthateveryoneconcernedwithethicalsportislookingforsaysJerryBinghamUKSport’sheadofethics伦理.ArandomsystemcanstillbemanipulatedsaysMarkDixonaspecialistonsportsstatisticsfromtheRoyalStatisticalSocietyinLondon.Thescoreofoneortwojudgeswhohavebeennobbled收到贿赂maystillbeinthesevenselected.Manyothersportsthathavejudgesincludingdivinggymnasticsandsynchronizedswimminghaveasystemthatdiscardsthehighestandlowestscores.Ifajudgewasunderpressuretofavouraparticularteamtheywouldtendtogiveitveryhighscoresandmarkdowntheoppositionteamsotheirscoreswouldn’tcount.ItworksfordivingsaysJeffCookamemberoftheinternationalgovernmentbody’stechnicalcommittee.Ifyouremovethoseatthetopandbottomyou’releftwiththoseinthemiddlesoyou’regettingareasonableaverage.Sincethe2000OlympicsinSydneydivinghastightenedupinitssystemstillfurther.Twoseparatepanelsofjudgesscoredifferentroundsofdivingduringtopcompetitions.Neitherpanelknowsthescoresgivenbytheother.WehavedonethistoheadoffanysuggestionofbiassaysCook.BinghamurgedtheISUtoconsiderotheroptions.Thisshouldinvolveexaminingthewayinwhichothersportsdealwiththeproblemofadjudicating裁定onmatterofstyleandpresentationhesays.AccordingtothenewrulesproposedbytheISUwhichofthefollowingisright
Thestorywastouching.
TechnologyTransferinGermanyWhenitcomestotranslatingbasicresearchintoindustrialsuccessfewnationscanmatchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfedwithaconstantstreamofnewideasandexpertisefromscience.AndthoughGermanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthehugecostofunifyingeastandwestaswellastheglobaleconomicdeclineitstillhasanenviablerecordforturningideasintoprofit.MuchofthereasonforthatsuccessistheFraunhoferSocietyanetworkofresearchinstitutesthatexistssolelytosolveindustrialproblemsandcreatesought-aftertechnologies.ButtodaytheFraunhoferinstituteshavecompetition.Universitiesaretakinganeverlargerroleintechnologytransferandtechnologyparksarespringingupallover.Theseeffortsarebeingcomplementedbythefederalprogrammesforpumpingmoneyintostart-upcompanies.Suchastrategymaysoundlikearecipeforeconomicsuccessbutitisnotwithoutitscritics.Thesepeopleworrythatfavouringappliedresearchwillmeanneglectingbasicscienceeventuallystarvingindustryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearchbeingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthatmanyoftheprogrammestopromotetechnologytransferareawasteofmoneybecausehalfthesmallbusinessesthatarepromotedareboundtogobankruptwithinafewyears.WhilethisdebatecontinuesnewideasflowatasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuchasHelmholtzMaxPlanckandLeibniz.YetitisthefourthnetworktheFraunhoferSocietythatplaysthegreatestroleintechnologytransfer.Foundedin1949theFraunhoferSocietyisnowEurope’slargestorganisationforappliedtechnologyandhas59institutesemploying12000people.Itcontinuestogrow.LastyearitswalloweduptheHeindchHertzInstituteforCommunicationTechnologyinBerlin.TodaythereareevenFraunhofersintheUSandAsia.WhatfactorcanbeattributedtoGermanprosperity
Hewasaverysmartboybuthemadeafoolishdecisionthistime.
Ourpartyisperfectduetoourcarefulplan.
MobilePhonesMobilephonesshouldcarryalabeliftheyprovedtobeadangeroussourceofradiationaccordingtoRobertBellascientist.Andnomoremobilephonetransmittertowersshouldbebuilduntilthelong-termhealtheffectsoftheelectromagnetic电磁的radiationtheyemitisscientificallyevaluatedhesaid.Nobody’sgoingtodropdeadovernightbutweshouldbeaskingformorescientificinformationRobertBellsaidataconferenceonthehealtheffectsoflow-levelradiation.46Areportwidelycirculated传播amongthepublicsaysthatuptonowscientistsdonotreallyknowenoughtoguaranteetherearenoilleffectsonhumansfromelectromagneticradiation.AccordingtoRobertBellthereare3.3millionmobilephonesinAustraliaaloneandtheyareincreasingby32000aday.47Aswellthereare2000transmittertowersaroundAustraliamanyinhighdensity密度residentialareas.48Theelectromagneticradiationemittedfromthesetowersmayhavealreadyproducedsomeharmfuleffectsonthehealthoftheresidentsnearby.RobertBellsuggeststhatuntilmoreresearchiscompletedtheGovernmentshouldbanconstructionofphonetowersfromwithina500metreradiusofschoolgroundschildcarecentreshospitalssportsplayingfields隔离屏andresidentialareaswithahighpercentageofchildren.49Headdsthatthereisalsoevidencethatifcancersufferersaresubjectedtoelectromagneticwavesthegrowthrateofthediseaseaccelerates加速加快.50AccordingtoRobertBellitisreasonableforthemajortelephonecompaniestofundit.BesideshealsourgestheGovernmenttosetupawideranginginquiryintopossiblehealtheffects.A.Hesaysthereisemergingevidencethatchildrenabsorblow-levelradiationataratemorethanthreetimesthatofadults.B.Bytheyear2004itisestimatedthatAustraliawillhave8millionmobilephones:nearlyoneforeverytwopeople.C.Ifmobilephonesarefoundtobedangeroustheyshouldcarryawarninglabeluntilpropershieldscanbedevisedhesaid.D.ThenwhofinancestheresearchE.ForexampleTelstraOptusandVodaphonebuildtheirtowerswhereitisgeographicallysuitabletothemanddisregard不顾theneedofthecommunity.F.Theconclusionisthatmobilephonesbringsmoreharmthanbenefit.
A.TheOrganizationofAnArticleB.CheckYourReadingSpeedC.AWaytoIncreaseYourReadingSpeedD.CheckYourUnderstandingE.ReadSomethingEveryDayF.ReadExtensivelyParagraph4______
NewProductWillSaveLivesDrinkingwaterthatlookscleanmaystillcontainbugs虫子whichcancauseillness.AsmallcompanycalledGeneraTechnologieshasproducedatestingmethodinthreestageswhichshowswhetherwaterissafe.Thenewtestshowsifwaterneedschemicalsaddedtoittodestroyanythingharmful.ItwasinventedbyscientistDr.AdrianPattonwhostartedGenerafiveyearsago.HeandhisemployeeshavedevelopedthetesttogetherwithaBritishwatercompany.AndyHeadlandGenera’smarketingdirectorrecentlypresentedthetestataconferenceintheUSAandforecastedgoodAmericansalesforit.Generahasalreadysold11ofitstestsat$42500atimeintheUKandhasafurtherfouronorder.Itexpectstosellanother25testsbeforetheendofMarch.ThecompanysaysitistheonlytestintheUKtobeapprovedbythegovernment.GenerawasformedfiveyearsagoanduntilOctoberlastyearhadonlyfiveemployees:itnowemploys14.Mr.Headlandbelievesthatthecompanyshouldmakearound$19millionbytheendoftheyearintheUKalone.Eachofthetestscosts$42500.
A.findthetopicsentencesB.findoutthenewwordsC.keepreadingfastD.gotobedeverydayE.keepanoteoftheirreadingspeedF.lookatyourwatcheveryfewminutesYouareadvisedtoreadsomethingbeforeyou______.
TraveltoMoonTheNationalAeronauticsandSpaceAdministrationNASAhasannouncedplanstoreturnpeopletothemoonby2018.AndthistimeaccordingtoaNASApressreleasewe’regoingtostay.NASAwantstomakeanewspaceshipforthemissionsusingpartsfromtheApolloprogramwhichfirsttookpeopletothemoonin1969andthespaceshuttle.NASAsaysthenewCrewExplorationVehicleCEVwillbeaffordablereliableandsafe.TheCEVwillbeabletoholdfourastronauts.TheplanistohavetheCEVdock对接inspacewiththelunarlander—thevehicleastronautswillusetolandonthemoon—whichwillbelaunchedseparatelyintospace.TheCEVwillthentraveltothemoonandallfourastronautswillwalkonthemoon.Thefirstmoonmissionsareexpectedtolastuptosevendays.Explorationandconstructionofamoonbasewillbetheastronauts’toppriorities最优先考虑的事.NASAhopestohaveaminimumoftwomoonmissionsayearstartingin2018.ThiswillallowforquickmoonbaseconstructionconstantscientificstudyandtrainingforfuturemissionstoMars.WhatisnewinNASA’splantoreturntothemoonby2018
A.TheOrganizationofAnArticleB.CheckYourReadingSpeedC.AWaytoIncreaseYourReadingSpeedD.CheckYourUnderstandingE.ReadSomethingEveryDayF.ReadExtensivelyParagraph2______
TechnologyTransferinGermanyWhenitcomestotranslatingbasicresearchintoindustrialsuccessfewnationscanmatchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfedwithaconstantstreamofnewideasandexpertisefromscience.AndthoughGermanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthehugecostofunifyingeastandwestaswellastheglobaleconomicdeclineitstillhasanenviablerecordforturningideasintoprofit.MuchofthereasonforthatsuccessistheFraunhoferSocietyanetworkofresearchinstitutesthatexistssolelytosolveindustrialproblemsandcreatesought-aftertechnologies.ButtodaytheFraunhoferinstituteshavecompetition.Universitiesaretakinganeverlargerroleintechnologytransferandtechnologyparksarespringingupallover.Theseeffortsarebeingcomplementedbythefederalprogrammesforpumpingmoneyintostart-upcompanies.Suchastrategymaysoundlikearecipeforeconomicsuccessbutitisnotwithoutitscritics.Thesepeopleworrythatfavouringappliedresearchwillmeanneglectingbasicscienceeventuallystarvingindustryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearchbeingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthatmanyoftheprogrammestopromotetechnologytransferareawasteofmoneybecausehalfthesmallbusinessesthatarepromotedareboundtogobankruptwithinafewyears.WhilethisdebatecontinuesnewideasflowatasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuchasHelmholtzMaxPlanckandLeibniz.YetitisthefourthnetworktheFraunhoferSocietythatplaysthegreatestroleintechnologytransfer.Foundedin1949theFraunhoferSocietyisnowEurope’slargestorganisationforappliedtechnologyandhas59institutesemploying12000people.Itcontinuestogrow.LastyearitswalloweduptheHeindchHertzInstituteforCommunicationTechnologyinBerlin.TodaythereareevenFraunhofersintheUSandAsia.Thewordexpertiseinline3couldbebestreplacedby______.
A.findthetopicsentencesB.findoutthenewwordsC.keepreadingfastD.gotobedeverydayE.keepanoteoftheirreadingspeedF.lookatyourwatcheveryfewminutesYoucanimproveyourreadingspeedifyou______.
NewProductWillSaveLivesDrinkingwaterthatlookscleanmaystillcontainbugs虫子whichcancauseillness.AsmallcompanycalledGeneraTechnologieshasproducedatestingmethodinthreestageswhichshowswhetherwaterissafe.Thenewtestshowsifwaterneedschemicalsaddedtoittodestroyanythingharmful.ItwasinventedbyscientistDr.AdrianPattonwhostartedGenerafiveyearsago.HeandhisemployeeshavedevelopedthetesttogetherwithaBritishwatercompany.AndyHeadlandGenera’smarketingdirectorrecentlypresentedthetestataconferenceintheUSAandforecastedgoodAmericansalesforit.Generahasalreadysold11ofitstestsat$42500atimeintheUKandhasafurtherfouronorder.Itexpectstosellanother25testsbeforetheendofMarch.ThecompanysaysitistheonlytestintheUKtobeapprovedbythegovernment.GenerawasformedfiveyearsagoanduntilOctoberlastyearhadonlyfiveemployees:itnowemploys14.Mr.Headlandbelievesthatthecompanyshouldmakearound$19millionbytheendoftheyearintheUKalone.BeforehesetupGener
Johnremovedhisovercoat.
Irarelyplaycards.
CollegesintheUShaveaddedanewsubjectgreenchemistry51theircurriculum课程today.Greenchemistry52howwecandevelopproductsthatwon’t53theenvironmentexplainsPaulAnastasdirectorofYaleUniversity’sCenterforGreenChemistryandGreenEngineering.Itopened54thebeginningofthisyear.TheAmericanChemicalSociety55approvesmorethan600collegechemistryprogramsonlylistsaboutadozenthatteachgreenchemistry.Butthat56sgrowingCambridgeCollegeinMassachusensis57anintroductiontogreenchemistrycoursethisfallandisofferingthenation’sfirstbachelor’sandmaster’s58ingreenchemistry.Theprogramwillhaveclassesinenvironmentalscienceandevenenvironmental59andpolicy.Thesesubjectsarenot60taughttochemistrymajors.Employers61theintroductionofgreenchemistry.Businessesareincreasinglyseekinggraduates62backgroundsinthesubject63itcanhelpthemmakeorsavemoneyinthedevelopmentandmanufacturingofproducts.Weneedpeople64cannotonlyunderstandtheirplace65butalsounderstandtheworldwideperspectivesaidAdamPetersonachemicalsdivisionmanageratDowComingCorp.
Clearlyhewillwinthegame.
TechnologyTransferinGermanyWhenitcomestotranslatingbasicresearchintoindustrialsuccessfewnationscanmatchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfedwithaconstantstreamofnewideasandexpertisefromscience.AndthoughGermanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthehugecostofunifyingeastandwestaswellastheglobaleconomicdeclineitstillhasanenviablerecordforturningideasintoprofit.MuchofthereasonforthatsuccessistheFraunhoferSocietyanetworkofresearchinstitutesthatexistssolelytosolveindustrialproblemsandcreatesought-aftertechnologies.ButtodaytheFraunhoferinstituteshavecompetition.Universitiesaretakinganeverlargerroleintechnologytransferandtechnologyparksarespringingupallover.Theseeffortsarebeingcomplementedbythefederalprogrammesforpumpingmoneyintostart-upcompanies.Suchastrategymaysoundlikearecipeforeconomicsuccessbutitisnotwithoutitscritics.Thesepeopleworrythatfavouringappliedresearchwillmeanneglectingbasicscienceeventuallystarvingindustryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearchbeingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthatmanyoftheprogrammestopromotetechnologytransferareawasteofmoneybecausehalfthesmallbusinessesthatarepromotedareboundtogobankruptwithinafewyears.WhilethisdebatecontinuesnewideasflowatasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuchasHelmholtzMaxPlanckandLeibniz.YetitisthefourthnetworktheFraunhoferSocietythatplaysthegreatestroleintechnologytransfer.Foundedin1949theFraunhoferSocietyisnowEurope’slargestorganisationforappliedtechnologyandhas59institutesemploying12000people.Itcontinuestogrow.LastyearitswalloweduptheHeindchHertzInstituteforCommunicationTechnologyinBerlin.TodaythereareevenFraunhofersintheUSandAsia.TheFraunhoferSocietyisthelargestorganisationforappliedtechnologyin______.
CollegesintheUShaveaddedanewsubjectgreenchemistry51theircurriculum课程today.Greenchemistry52howwecandevelopproductsthatwon’t53theenvironmentexplainsPaulAnastasdirectorofYaleUniversity’sCenterforGreenChemistryandGreenEngineering.Itopened54thebeginningofthisyear.TheAmericanChemicalSociety55approvesmorethan600collegechemistryprogramsonlylistsaboutadozenthatteachgreenchemistry.Butthat56sgrowingCambridgeCollegeinMassachusensis57anintroductiontogreenchemistrycoursethisfallandisofferingthenation’sfirstbachelor’sandmaster’s58ingreenchemistry.Theprogramwillhaveclassesinenvironmentalscienceandevenenvironmental59andpolicy.Thesesubjectsarenot60taughttochemistrymajors.Employers61theintroductionofgreenchemistry.Businessesareincreasinglyseekinggraduates62backgroundsinthesubject63itcanhelpthemmakeorsavemoneyinthedevelopmentandmanufacturingofproducts.Weneedpeople64cannotonlyunderstandtheirplace65butalsounderstandtheworldwideperspectivesaidAdamPetersonachemicalsdivisionmanageratDowComingCorp.
Tellmetheexacttimewhenthenextplainwillleave.
MobilePhonesMobilephonesshouldcarryalabeliftheyprovedtobeadangeroussourceofradiationaccordingtoRobertBellascientist.Andnomoremobilephonetransmittertowersshouldbebuilduntilthelong-termhealtheffectsoftheelectromagnetic电磁的radiationtheyemitisscientificallyevaluatedhesaid.Nobody’sgoingtodropdeadovernightbutweshouldbeaskingformorescientificinformationRobertBellsaidataconferenceonthehealtheffectsoflow-levelradiation.46Areportwidelycirculated传播amongthepublicsaysthatuptonowscientistsdonotreallyknowenoughtoguaranteetherearenoilleffectsonhumansfromelectromagneticradiation.AccordingtoRobertBellthereare3.3millionmobilephonesinAustraliaaloneandtheyareincreasingby32000aday.47Aswellthereare2000transmittertowersaroundAustraliamanyinhighdensity密度residentialareas.48Theelectromagneticradiationemittedfromthesetowersmayhavealreadyproducedsomeharmfuleffectsonthehealthoftheresidentsnearby.RobertBellsuggeststhatuntilmoreresearchiscompletedtheGovernmentshouldbanconstructionofphonetowersfromwithina500metreradiusofschoolgroundschildcarecentreshospitalssportsplayingfields隔离屏andresidentialareaswithahighpercentageofchildren.49Headdsthatthereisalsoevidencethatifcancersufferersaresubjectedtoelectromagneticwavesthegrowthrateofthediseaseaccelerates加速加快.50AccordingtoRobertBellitisreasonableforthemajortelephonecompaniestofundit.BesideshealsourgestheGovernmenttosetupawideranginginquiryintopossiblehealtheffects.A.Hesaysthereisemergingevidencethatchildrenabsorblow-levelradiationataratemorethanthreetimesthatofadults.B.Bytheyear2004itisestimatedthatAustraliawillhave8millionmobilephones:nearlyoneforeverytwopeople.C.Ifmobilephonesarefoundtobedangeroustheyshouldcarryawarninglabeluntilpropershieldscanbedevisedhesaid.D.ThenwhofinancestheresearchE.ForexampleTelstraOptusandVodaphonebuildtheirtowerswhereitisgeographicallysuitabletothemanddisregard不顾theneedofthecommunity.F.Theconclusionisthatmobilephonesbringsmoreharmthanbenefit.
Heachievedsuccessthroughhardwork.
TraveltoMoonTheNationalAeronauticsandSpaceAdministrationNASAhasannouncedplanstoreturnpeopletothemoonby2018.AndthistimeaccordingtoaNASApressreleasewe’regoingtostay.NASAwantstomakeanewspaceshipforthemissionsusingpartsfromtheApolloprogramwhichfirsttookpeopletothemoonin1969andthespaceshuttle.NASAsaysthenewCrewExplorationVehicleCEVwillbeaffordablereliableandsafe.TheCEVwillbeabletoholdfourastronauts.TheplanistohavetheCEVdock对接inspacewiththelunarlander—thevehicleastronautswillusetolandonthemoon—whichwillbelaunchedseparatelyintospace.TheCEVwillthentraveltothemoonandallfourastronautswillwalkonthemoon.Thefirstmoonmissionsareexpectedtolastuptosevendays.Explorationandconstructionofamoonbasewillbetheastronauts’toppriorities最优先考虑的事.NASAhopestohaveaminimumoftwomoonmissionsayearstartingin2018.ThiswillallowforquickmoonbaseconstructionconstantscientificstudyandtrainingforfuturemissionstoMars.ThereasonwhyNASAhopestocarryoutatleasttwomoonmissionsayearstartingin2018isto______.
NewProductWillSaveLivesDrinkingwaterthatlookscleanmaystillcontainbugs虫子whichcancauseillness.AsmallcompanycalledGeneraTechnologieshasproducedatestingmethodinthreestageswhichshowswhetherwaterissafe.Thenewtestshowsifwaterneedschemicalsaddedtoittodestroyanythingharmful.ItwasinventedbyscientistDr.AdrianPattonwhostartedGenerafiveyearsago.HeandhisemployeeshavedevelopedthetesttogetherwithaBritishwatercompany.AndyHeadlandGenera’smarketingdirectorrecentlypresentedthetestataconferenceintheUSAandforecastedgoodAmericansalesforit.Generahasalreadysold11ofitstestsat$42500atimeintheUKandhasafurtherfouronorder.Itexpectstosellanother25testsbeforetheendofMarch.ThecompanysaysitistheonlytestintheUKtobeapprovedbythegovernment.GenerawasformedfiveyearsagoanduntilOctoberlastyearhadonlyfiveemployees:itnowemploys14.Mr.Headlandbelievesthatthecompanyshouldmakearound$19millionbytheendoftheyearintheUKalone.TheBritishgovernmentishelpingDr.Pattontosellthetestsabroad.
CellPhoneLetsYourSecretOutYourcellphoneholdssecretsaboutyou.Besidesthenamesand51thatyou’veprogrammedintoittracesofyourDNAlinger逗留onthedeviceaccordingtoanewstudy.DNAisgeneticmaterialthat52ineverycell.LikeyourfingerprintyourDNAisuniquetoyou53youhaveanidenticaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsaliva唾液orhairleft54atthesceneofacrime.Theresultsoftenhelpdetectivesidentify55andtheirvictims.Yourcellphonecanrevealmoreaboutyou56youmightthink.MeghanJ.McFaddenascientistatMcMasterUniversityinHamiltonOntarioheardaboutacrimeinwhichthesuspectbledontoacellphoneandlaterdroppedthe57.ThismadeherwonderwhethertracesofDNAlingeredoncellphones—evenwhennobloodwasinvolved58sheandcolleagueMargaretWallaceoftheCityUniversityofNewYorkanalyzedtheflip-openphonesof10volunteers.Theyusedswabs药签tocollect59tracesoftheusersfromtwopartsofthephone:theoutsidewheretheuserholdsitandthe60whichisplacedattheuser’sear.Thescientistsscrubbedthephonesusingasolutionmademostly61alcohol.TheaimofwashingwastoremovealldetectabletracesofDNA.Theownersgottheirphones62foranotherweek.Thentheresearcherscollectedthephonesandrepeatedtheswabbingofeachphoneoncemore.ThescientistsdiscoveredDNAthat63tothephone’sspeakeroneachofthephones.BettersampleswerecollectedfromtheoutsideofeachphonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohadapparentlyalsohandledthephone.64DNAshowedupeveninswabsthatweretakenimmediatelyafterthephoneswerescrubbed擦洗.Thatsuggeststhatwashingwon’tremovealltracesofevidencefromacriminal’sdevice.Socellphonescannowbeaddedtothe65ofcluesthatcandecideacrime-sceneinvestigation.
TraveltoMoonTheNationalAeronauticsandSpaceAdministrationNASAhasannouncedplanstoreturnpeopletothemoonby2018.AndthistimeaccordingtoaNASApressreleasewe’regoingtostay.NASAwantstomakeanewspaceshipforthemissionsusingpartsfromtheApolloprogramwhichfirsttookpeopletothemoonin1969andthespaceshuttle.NASAsaysthenewCrewExplorationVehicleCEVwillbeaffordablereliableandsafe.TheCEVwillbeabletoholdfourastronauts.TheplanistohavetheCEVdock对接inspacewiththelunarlander—thevehicleastronautswillusetolandonthemoon—whichwillbelaunchedseparatelyintospace.TheCEVwillthentraveltothemoonandallfourastronautswillwalkonthemoon.Thefirstmoonmissionsareexpectedtolastuptosevendays.Explorationandconstructionofamoonbasewillbetheastronauts’toppriorities最优先考虑的事.NASAhopestohaveaminimumoftwomoonmissionsayearstartingin2018.ThiswillallowforquickmoonbaseconstructionconstantscientificstudyandtrainingforfuturemissionstoMars.HowwillCEVandthemoonlanderbelaunched
CellPhoneLetsYourSecretOutYourcellphoneholdssecretsaboutyou.Besidesthenamesand51thatyou’veprogrammedintoittracesofyourDNAlinger逗留onthedeviceaccordingtoanewstudy.DNAisgeneticmaterialthat52ineverycell.LikeyourfingerprintyourDNAisuniquetoyou53youhaveanidenticaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsaliva唾液orhairleft54atthesceneofacrime.Theresultsoftenhelpdetectivesidentify55andtheirvictims.Yourcellphonecanrevealmoreaboutyou56youmightthink.MeghanJ.McFaddenascientistatMcMasterUniversityinHamiltonOntarioheardaboutacrimeinwhichthesuspectbledontoacellphoneandlaterdroppedthe57.ThismadeherwonderwhethertracesofDNAlingeredoncellphones—evenwhennobloodwasinvolved58sheandcolleagueMargaretWallaceoftheCityUniversityofNewYorkanalyzedtheflip-openphonesof10volunteers.Theyusedswabs药签tocollect59tracesoftheusersfromtwopartsofthephone:theoutsidewheretheuserholdsitandthe60whichisplacedattheuser’sear.Thescientistsscrubbedthephonesusingasolutionmademostly61alcohol.TheaimofwashingwastoremovealldetectabletracesofDNA.Theownersgottheirphones62foranotherweek.Thentheresearcherscollectedthephonesandrepeatedtheswabbingofeachphoneoncemore.ThescientistsdiscoveredDNAthat63tothephone’sspeakeroneachofthephones.BettersampleswerecollectedfromtheoutsideofeachphonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohadapparentlyalsohandledthephone.64DNAshowedupeveninswabsthatweretakenimmediatelyafterthephoneswerescrubbed擦洗.Thatsuggeststhatwashingwon’tremovealltracesofevidencefromacriminal’sdevice.Socellphonescannowbeaddedtothe65ofcluesthatcandecideacrime-sceneinvestigation.
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