制定战略的核心是（）
A、市场分析
B、领导者的权威
C、正确地提出和回答问题
D、考虑顾客的需求
参考答案：C
In the complex and technological society the United States has become, each member must fulfill
a number of personal and occupational roles and be in contact with many other members.[ ]
A. that
B. where
C. when
D. what
蔬菜按照植物学分类的方法是（）、（）、目、科、属、种。
