关于心理健康建设与思想品德建设说法正确的是（）A、心理健康建设和思想品德建设是相互相

系统压力下降有哪些原因？

视觉性语言中枢位于

A．颞横回

B．顶下小叶角回

C．额下回后部

D．颞上回

E．额中回后部

痿病者下肢痿软无力，腰膝酸软，不能久立，伴目眩发落，遗精，舌红少苔，脉细数，治疗首选（）

A.知柏地黄丸

B.一贯煎

C.大补元煎

D.虎潜丸

E.以上皆不是

文蛤为软体动物，其（）肥大，体呈斧行，淡黄色。

A.肉质

B.贝尖

C.内脏

D.旱蚶

Juliet Kaufman manages a large portfolio of risky assets for a family of investors. The portfolio consists primarily of stocks but also includes a small allocation of fixed-income investments. Currently, the expected return and standard deviation of the portfolio are 14.0 percent and 12.0 percent, respectively. Kaufman is considering adding one of four stocks to the portfolio. Data on each stock’s expected return, beta, standard deviation and covariance with the existing portfolio are presented below. Which stock should Kaufman add to the portfolio

A．Stock

B．E(R)

C．Beta

D．D.

E．Covariance

F．

A

B

C

G．

12.0%

13.0%

15.0%

H．

0.85

1.08

0.97

I．

11.0%

10.0%

8.0%

J．

0.00

-0.01

0.02