单选题 Also of concern was the fact that many consumers lacked sufficient information and awareness to protect themselves in the marketplace and to make knowledgeable buying choices.
【正确答案】 B
【答案解析】[解析] 句意:同样令人担忧的是,消费者缺乏足够的信息和认识,无法在市场中进行自我保护,以在购物时做出明智的选择。knowledgeable有见识的,聪明的。intelligent聪明的,智慧的。diligent用功的,勤奋的。remarkable卓越的;值得注意的。understandable可以理解的。