It's ____ (据说) that many babies have died from melamine (三聚氰胺) in milk power.
It's ____ (据说) that many babies have died from melamine (三聚氰胺) in milk power.
相关考题：
1、三聚氰胺之所以被掺入奶粉来“提高”蛋白质的含量，是因为A．三聚氰胺是一种蛋白质。B．三聚氰胺是奶粉的一种组成成分。C．三聚氰胺和蛋白质具有相同的性质。D．检测奶粉中蛋白质含量的凯氏定氮法不能区分氮的来源是三聚氰胺还是蛋白质。