在当代中国，坚持中国特色社会主义道路，就是真正坚持
A．马克思主义
B．社会主义
C．科学发展观
D．改革开放
参考答案：B
分层法是将指数的成分股按照某个因素（如行业、风险水平β值）分类，然后按照各类股票在股价指数中的比例构造投资组合。（）
When the headmaster spoke out his plan, the _____of the students in the class ____ against it.
A．majority; were
B．most; were
C．most; did
D．majority; did
