A certain tropical island received food donations in the form of powdered milk for distribution to its poorest residents, who were thought to be malnourished. Subsequently, the rate of liver cancers among those islanders increased sharply. The donated milk was probably to blame: recent laboratory research on rats has shown that rats briefly exposed to the substances aflatoxin tend to develop liver cancer when fed casein, a milk protein. This result is relevant because . 红色部分为结论 题干说,收到奶粉的居民的肝癌的几率增加。 做的实验是,接触Protein以及aflatoxin的rats也会得肝癌。 因此,要补出那些收到奶粉的居民有机会接触aflatoxin. -- by 会员 kidvii (2011/11/25 23:00:59)
亲,你说的太妙了。 懂了~ |