县级以上各级人民政府设立()的统计机构，负责组织领导和协调本行政区域内的统计工作。A

Cross-sectional returns studies contend that:（）

A. all securities should have equal risk-adjusted returns because security prices should reflect all public information that would influence the security’s risk.

B. all securities should have equal risk-adjusted returns because security prices should not reflect all public information that would influence the security’s risk.

C. securities should not have equal risk-adjusted returns because security prices should not reflect all public information that would influence the security’s risk.

I think I’m not the kind of person ________ likes to sharing everything with others.

A what            B which        C who          D when

某居民楼总建筑面积为5000m²，总价值为1000万元，其中土地总价值为500万元，某人拥有该居民楼的一套单元式住宅，建筑面积为150m²，房地总价值为35万元。若按照土地价值进行分摊，该人占有的土地份额为（）。

A．3%

B．3.5%

C．7%

D．4%

痰浊为病，随气上逆尤易（）。

A.阻滞肺气，失于宣降

B.留滞脏腑，升降失常

C.蒙蔽清窍，扰乱心神

D.流注经络，气机阻滞

E.停滞胃腑，失于和降

简述初级社会群体的基本特征及其社会功能