The Canadian researchers randomly assigned about half of the addicts to receive methadone and the other half to receive daily injections of diacetylmorphine, the active ingredient in heroin.
加
的研究者对【将】受验者随机分组,一半接受
沙酮的治疗,另一半每天接受注射二乙酰
,
要成分是海洛因【为海洛因的
要成分】。


洲
之后,布雷迪发现一位母亲对
4







