题目

One hundred years ago, Colored was the typical way of referring to Americans of African descent. Twenty years later, it was purposefully dropped to make way for Negro. By the late 1960s, that term was overtaken by Black. And then, at a press conference in Chicago in 1988, Jesse Jackson declared that African American was the term to welcome. This one was chosen because it echoed the labels of groups, such as Italian Americans and Irish Americans, that had already been freed of widespread discrimination. A century's worth of calculated name changes point to the fact that naming any group食品安全越来越受到人们的关注，下列关于青少年饮食的说法中合理的是：A．晚餐要多吃肉类和蛋类B．食物多样，一日三餐，按时进餐C．常备零食，想吃就吃D．多吃维生素和微量元素强化食品或保健品