关于写癌症的英语作文
ControllingCancer
Ther
e
aretwomaincausesofcancer:heredityandenvironment.Wecandonothingtochangeourheredity,
thatis,thebasicphysicalcharacteristi
csth
atwerepasse
dontousbyourparents.However,wecandoagreatdealtocontrolourenvironment,whichmayaccountfor80-90%ofallcancers.
Environmentalpollution
canbedividedintotwokinds:personalandimpersonal.Personalpollutionmay
bedefinedroughlyasunhealthyhabitssuchas
smoking,
drinking,andeatingthewrongfoods.Clearly,with
enoughwillpowerwecancontrolthispersonalenvironment.
Impersonalpollution,ontheotherhand,refersto
thosethingswhicharebeyondourindividualcontrol.
Oneexa
mplewould
beindustrialpollution,whichisveryhardtocontrolbecauseoftheexpenseinvolved.It
wouldbeexpensiveintermsofprofits
andperhapsjobs.TheAmericanautomobileindustry,forexample,
r
esistedthelawrequiringsmog-controldevicesbecauseitfearedtheaddedexpensewouldreduceprofits.
Ne
verth
e
less,somelawsprotectingtheenvironmenthavebeenqu
itesuccessfulinreducingpollution.
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