Everyday,peoplecomeintocontactwiththousandsofchemicals.Thesechemicalsaresaidtobeharmlesstohumanhealth.Infact,thechemicalsareconsideredsosafethatwewashwiththem.Weputthemonourbodiesandevenourfaces.Other
Everyday,peoplecomeintocontactwiththousandsofchemicals.Thesechemicalsaresaidtobeharmlesstohumanhealth.Infact,thechemicalsareconsideredsosafethatwewashwiththem.Weputthemonourbodiesandevenourfaces.Otherchemicalproductsareusedthroughoutourhomes.
Bythetimeyouwalkoutofyourfrontdoor,youhavealreadybeenexposedtothousandsofchemicals.
Onitsown,eachchemicalseemsharmless.Butincombinationwithotherchemicals,theymaybecomedeadly.Thatisthefindingofatwo-yearstudybyahigh-profile(高调的)taskforceofscientists.Thetaskforcewastoldtoinvestigatethecancer-causingpossibilityofchemicalmixtures.
LindaGulliverwasoneofthe174scientistsonthetaskforce.Theirjobwastostudythecancer-causingpotentialof85chemicals.All85aresaidtobecommonintheenvironment.
Ms.Gulliverexplainsthatchemicalshavethepotentialorabilitytoformdangerousmixtures.Evensimplemineralscanbecomedangerouswhenmixedwithchemicalsfoundinplasticsorbeautyproducts.
Workingingroups,thescientistsexploredhowdifferentchemicalmixturescouldleadtocancer.Ms.Gulliver'steamlookedattheabilityofdifferentcombinationstosupporttheincreaseofmalignant(恶性的)humancells.
Shesaysthecurrentwaytoidentifywhetherchemicalscausecanceristotestthemoneatatime.Thismethodleads,sheadds,toalonglistofsupposedly"safe"chemicals.Sheandherteamsaythatapproachneedstochange.
"Wedefinitelyneedcertainresearch…tofindoutwhatmixturesofchemicalswouldbemoreharmfulthanothers;whatgroupsofchemicals,whentogether,wouldproducemoreharmfuleffects.Andatthemoment,thatisnotknown."
Anestimatedoneinfivecancershasbeenlinkedtochemicalexposure.Itmayturnoutthatthecancer-causingvillain(恶棍)isnotasinglechemicalatall.
32.Whateffectmayonesinglechemicalhaveonusaccordingtothetext?___
A.Itmaydestroyourbody.
B.Itmaynotcausedangertous.
C.Itmayletussufferfromcancer.
D.Itmayletourbodymakeachange.
33.WhatcanwelearnaboutMs.Gulliver'sresearch?___
A.Shehasfound85cancer-causin