【導(dǎo)讀】information.words.text.Theathletes’performance…improved.anddiet.beguntoslowdown.Butinthewronghands,thosewhothem.7.___________.tobetested.allthetime.aboutgenetherapy.researchintoit.sport.aboutgenetherapy.bychanginggenes.thantakingpart.sportworld,“hero”willbemeaningless.