艾略特波浪理论的数学基础来自（）。
A.周期理论
B.黄金分割数
C.时间数列
D.弗波纳奇数列
参考答案：D
His father got him a job in a bank but soon it became clear he was not fit for that kind of work．
A．why
B．what
C．whether
D．that
促进机体产热最重要的激素是（）
A.肾上腺皮质激素
B.肾上腺髓质激素
C.胰岛素
D.甲状腺激素
E.性激素
