在青少年教育中起主导作用的因素是( )
A．学校
B．家庭
C．社会
D．个体
参考答案：A
生物圈为生物的生存提供的基本条件包括：______、______、______、______、
______、______．
Study the following information, calculate the expected rate of return. index is now selling at $490. market index multiplier is expected to be 5X. index earnings is expected to be $100. dividend payment is expected to be $40.（）
A. 10%
B. 20%
C. 30%.
