![Asweknow,DNAtestingisveryusefulforcrimefighting.Butnowc...]( "Asweknow,DNAtestingisveryusefulforcrimefighting.Butnowc...")
- 问题详情：Asweknow,DNAtestingisveryusefulforcrimefighting.Butnowcrimefighterscouldhaveanewtoolathand.Researchershavedevelopedacutting-edge(前沿的)techniquetoidentifyhumanhair.TheirtestisquickerthanDNAanalysistechniquescurrentlyusedbythepolice.DNAtestin...
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