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1、四、补全短文bridge'stotalmass.（一）Mobilephones（移动电话）(C、B、E、F、D)Mobilephonesshouldcarryalabeliftheyproved'tobeadangerous（三）Reinventingthetable（重新发明元素周期表）sourceofradiation,accordingtoRobertBell,ascientist.AndnomoreAnearthscientisthasrejiggedtheperiodictable'to
2、makechemistrymobilephonetransmittertowersshouldbebuiltuntilthelong-termsimplertoteachtostudents.healtheffectsoftheelectromagneticradiationtheyemitarescientifically(1)ButBruceRailsbackfromtheUniversityofGeorgiasaysheisevaluated,hesaid."Nobody'sgoingtod
3、ropdeadovernightbutwethefirsttocreateatablethatbreakswithtraditionandshowstheionsofshouldbeaskingformorescientificinformation,"RobertBellsaidataeachelementratherthanjusttheelementsthemselves.conferenceonthehealtheffectsoflow-levelradiation（1）"Igottire
4、dofbreakingmyarmstryingtoexplaintheperiodictableAreportwidelycirculatedamongthepublicsaysthatuptonowtoearthstudents,"hesays,criss-crossinghishandsintheairandscientistsdonotreallyknowenoughtoguaranteetherearenoill-effectspointingtodifferentbitsofatradi
5、tionaltable.（2）Buthehasadded'onhumansfromelectromagneticradiation.AccordingtoRobertBell,contourlinestochargedensity,helpingtoexplainwhichionsreactwiththereare3.3millionmobilephonesinAustraliaaloneandtheyarewhich.increasingby2,000aday（2）"Geochemistsjus
6、twantanintuitivesenseofwhat'sgoingonwithASwell,thereare2,000transmittertowersaroundAustralia,manyintheelements,"saysAlbertfromtheUniversityofCambridge.（3）highdensityresidentialareas.（3）Theelectromagneticradiation（4）Heexplainsthatsulphur,forexample,sho
7、wsupinthreeemittedfromthesetowersmayhavealreadyproducedsomeharmfuldifferentspots-oneforsulphide,whichisfoundinminerals,oneforeffectsonthehealthoftheresidentsnearby.sulphite,andoneforsulphate,whichisfoundinseasalt,forinstance.RobertBellsuggeststhatunti
8、lmoreresearchiscompletedtheHehasalsoincludedsymbolstoshowwhichionsarenutrients,andGovernmentshouldbanconstructionofphonetowersfromwithina500whicharecommoninsoilorwater.（5）metreradiusofschoolgrounds,childcarecentres,hospitals,sportsATherehavebe
