For retired 65-year-old investor, with moderate risk tolerance and adequate insurance and cash reserves, the appropriate portfolio will most likely have the following mix of bonds and stocks:

A．portfolio

B．bonds

C．stocks

D．A

E．55%～65%

F．35%～45%

G．B

H．30%～40%

I．60%～70%

J．C

K．15%～50%

L．50%～85%

闭经病人垂体兴奋试验阳性提示

A．垂体性闭经

B．垂体功能正常，病变多系在下丘脑

C．Tumer氏综合征

D．有排卵

E．雌激素水平不足