Legislator:Tokeepourfoodsafe,wemustprohibittheuseofanyfoodadditivesthathavebeenfoundtocausecancer.
Commentator.Anabsoluteprohibitionisexcessive.Today’stestscandetectasinglemoleculeofpotentiallycancer-causingsubstances,butweknowthatconsumingsignificantlylargeramountsofsuchachemicaldoesnotincreaseone’sriskofgettingcancer.Thus,weshouldinsteadsetamaximumacceptablelevelforeachproblematicchemical,somewhatbelowthelevelatwhichthesubstancehasbeenshowntoleadtocancerbutabovezero.
Ofthefollowing,whichone,iftrue,isthelogicallystrongestcounterthelegislatorcanmaketothecommentator’sargument?
A: Thelevelatwhichagivenfoodadditivehasbeenshowntoleadtocancerinchildrenisgenerallyabouthalfthelevelatwhichitleadstocancerinadults.
B: Consumingsmallamountsofseveraldifferentcanner-causingchemicalscanleadtocancerevenifconsumingsuchanamountofanyonecancer-causingchemicalwouldnot.
C: Thelawwouldprohibitonlythedeliberateadditionofcancer-causingchemicalsandwouldnotrequiretheremovalofnaturallyoccurringcancer-causingsubstances.
D: Forsomefoodadditives,thelevelatwhichthesubstancehasbeenshowntoleadtocancerislowerthanthelevelatwhichtheadditiveprovidesanybenefit.
E: Allfoodadditiveshavesubstitutesthatcanbeusedintheirplace.
Commentator.Anabsoluteprohibitionisexcessive.Today’stestscandetectasinglemoleculeofpotentiallycancer-causingsubstances,butweknowthatconsumingsignificantlylargeramountsofsuchachemicaldoesnotincreaseone’sriskofgettingcancer.Thus,weshouldinsteadsetamaximumacceptablelevelforeachproblematicchemical,somewhatbelowthelevelatwhichthesubstancehasbeenshowntoleadtocancerbutabovezero.
Ofthefollowing,whichone,iftrue,isthelogicallystrongestcounterthelegislatorcanmaketothecommentator’sargument?
A: Thelevelatwhichagivenfoodadditivehasbeenshowntoleadtocancerinchildrenisgenerallyabouthalfthelevelatwhichitleadstocancerinadults.
B: Consumingsmallamountsofseveraldifferentcanner-causingchemicalscanleadtocancerevenifconsumingsuchanamountofanyonecancer-causingchemicalwouldnot.
C: Thelawwouldprohibitonlythedeliberateadditionofcancer-causingchemicalsandwouldnotrequiretheremovalofnaturallyoccurringcancer-causingsubstances.
D: Forsomefoodadditives,thelevelatwhichthesubstancehasbeenshowntoleadtocancerislowerthanthelevelatwhichtheadditiveprovidesanybenefit.
E: Allfoodadditiveshavesubstitutesthatcanbeusedintheirplace.
举一反三
- Randy:AfterMegaCableTelevisionCompanyrefusedtocarrythecompetingAzeoNewsServicealongsideitsownnewschannels,themayorusedherinfluencetogetAzeotimeonacommunitychannel,demonstratingherconcernforkeepingadiversityofnewsprogramminginthecity.<br/><alone></alone>Marion:Themayor’sactionisfullyexplainedbycrudermotives:she’srewardingAzeo’sowner,apoliticalsupporterofhers.<br/><alone></alone>Ofthefollowing,whichone,iftrue,isthelogicallystrongestcounterRandycanmaketoMarion’sobjection? A: TheownerofAzeosupportedthemayorsimplybecausehelikedherpoliticalagenda,andnotforanyexpectedreward. B: Themayoralsousedherinfluencetogettimeonacommunitychannelforanothernewsservice,whoseownersupportedthemayor’sopponentinthelastelection. C: Azeo’snewscoverageofthemayorhasneverbeenjudgedtobebiasedbyanimpartial,independentorganization. D: ThemanypeoplewhosejobsdependonAzeo’scontinuedpresenceonacommunitychannelareapotentialsourceofpoliticalsupportforthemayor. E: ThenumberofpeoplewhowatchMegaCableTelevisionCompany’sprogramminghasdecreasedduringthemayor’sterm.
- Whichone<br/>is<br/>the essential amino acid?() A: glycine B: methionine C: tyrosine D: Glutamine
- Whichone<br/>of thefollowingstructures<br/>is a part of the fibrous tunica of the eyeball? () A: the iris B: the ciliary body C: the choroid D: the retina E: the cornea
- Whichone<br/>of the following bones<br/>does belong to the long bone?() A: hip bone B: costal bone C: phalanges D: parietal bone E: scapula
- The<br/>weather () on Channel 4 is always extremely smartly dressed. A: man B: broadcaster C: girl D: interpreter E: commentator