请简述脑脊液常规检查的参考值以及临床意义

Some cities are popular with children. Sydney, Copenhagen, Los Angeles and London are four of them.

Sydney, Australia

Sydney has many great beaches. You can swim and surf along the beaches. Centennial Park is another fantastic place to hang out. You can play football or have a picnic there.

Copenhagen, Denmark

Copenhagen is the capital of Denmark. In Copenhagen, there are the two oldest theme parks in the world, the Bakken Amusement Park -and the Tivoli Amusement Park.

Los Angeles, America

Los Angeles is the movie capital of the world. Hollywood is part of it. There are many famous film companies. Maybe you can meet some of the movie stars you love.

London, England

London has a Natural History Museum. It is just like a zoo. It has many kinds of animal specimens. The dinosaur skeletons(骨架)are always popular.

小题1: ______ is the movie capital of the world.

A．Copenhagen

B．London

C．Sydney

D．Los Angeles小题2:The underlined word "specimen" means "______" in Chinese.

A．标本

B．玩具

C．食物

D．药品小题3:The writer wrote this passage to ______.

A．teach geography

B．give some suggestions about holiday

C．talk about four cities children like

D．tell some stories about four cities小题4: This passage is probably from ______.

A．an interesting film

B．a travel magazine

C．a sports report

D．a personal letter

社会角色的扮演包括哪些内容？如何才能扮演社会角色？

单纯部分运动性癫痫的病理机制是（）

A.中央后回破坏

B.中央后回刺激

C.中央前回破坏

D.中央前回刺激

E.中央前回、中央后回均破坏

十二指肠 * * 括约肌切开术最常见的并发症是（）

A.胆管损伤

B.急性胰腺炎

C.胆道出血

D.十二指肠瘘

E.胆管下端炎性狭窄

如图所示，甲、乙、丙是三个完全相同的圆柱形容器，将质量相等的酒精、硫酸和盐水分别放在这三个容器中，根据下表列出的密度值，确定甲、乙、丙三个容器中依次分别装的是_____、________、_____。