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1、四、补全短文（一）Mobilephones（移动电话）Mobilephonesshouldcarryalabeliftheyproved'tobeadangeroussourceofradiation,accordingtoRobertBell,ascientist.Andnomoremobilephonetransmittertowersshouldbebuiltuntilthelong-termhealtheffectsoftheelectromagneticradiationtheyemitarescientificallyevaluated,hesaid."Nobody'sgoing
2、todropdeadovernightbutweshouldbeaskingformorescientificinformation,"RobertBellsaidataconferenceonthehealtheffectsoflow-levelradiation（1）Areportwidelycirculatedamongthepublicsaysthatuptonowscientistsdonotreallyknowenoughtoguaranteetherearenoill-effectsonhumansfromelectromagneticradiation.Accordingto
3、RobertBell,thereare3.3millionmobilephonesinAustraliaaloneandtheyareincreasingby2,000aday（2）ASwell,thereare2,000transmittertowersaroundAustralia,manyinhighdensityresidentialareas.（3）Theelectromagneticradiationemittedfromthesetowersmayhavealreadyproducedsomeharmfuleffectsonthehealthoftheresidentsnear
4、by.RobertBellsuggeststhatuntilmoreresearchiscompletedtheGovernmentshouldbanconstructionofphonetowersfromwithina500metreradiusofschoolgrounds,childcarecentres,hospitals,sportsplayingfieldsandresidentialareaswithahighpercentageofchildren（4）Headdsthatthereisalsoevidencethatifcancersufferersaresubjecte
5、dtoelectromagneticwavesthegrowthrateofthediseaseaccelerates.（5）AccordingtoRobertBell,itisreasonableforthemajortelephonecompaniestofundit.Besides,healsourgestheGovernmenttosetupawide-ranginginquiryintopossiblehealtheffects.AHesaysthereisemergingevidencethatchildrenabsorblow-levelradiationataratemore
6、thanthreetimesthatofadults.BBytheyear20004itisestimatedthatAustraliawillhave8millionmobilephones:nearlyoneforeverytwopeople:C"Ifmobilephones'arefoundtobedangerous,theyshouldcarryawarninglabel'untilpropershieldscanbedevised,"hesaid.DThenwhofinancestheresearch?EForexample,Telstra,OptusandVodaphonebui
7、ldtheirtowerswhereitisgeographicallysuit-abletothemanddisregardtheneedofthecommunity.FTheconclusionisthatmobilephonesbringsmoreharmthanbenefit（C、B、E、A、D）（二）Theworld’slongestbridge（世界上最长的桥）Rumorhasitthat'ale
