1969年，魏塔克（R.Whittaker）的五界分类系统：（）、（）、（）、（）、

某人不小心从高处摔下，到医院检查，下列与确定此人神经中枢受损无需检查的是[ ]

A．针刺双脚观察是否有反应

B．检查血细胞的数量是否有变化

C．检查膝跳反射是否正常

D．要求此人复述医生的一段话

根据句意和提示写出单词，完成句子。

1. Women in China are usually dressed in_____ (红色的) on their wedding day.

2. How_____  (容易) you will find it to use the mobile phone if you know the function!

3. The _____ (时装) show held by UNICEF last week was a big success.

4. Seeing these old ladies get on the bus,_____  (几个) students offered them their seats.

5. We need your help to_____  (筹集) money for those homeless children.

6. The traffic lights are _____ (控制) by a central computer.

7. The ORBIS volunteers were _____ (自豪的) to help so many blind people in need.

8. The naughty boy ran into the garden and_____ (吓唬) the little cat away.

9. “Help_____  (you) to some fish.” Lucy said to Aunt Amy politely.

10. John is so_____ (honest) that no one believes him.

11. Many people do not know the_____  (important) of the wetlands.

12. There were thirty people in the classroom,_____  (include) the teacher.

13. The_____  (develop) of science has changed our world a lot.

14. Chinese national teams are_____  (active) preparing for London Olympic Games.

15. The boy is more than 2 metres in_____  (high) and he is good at playing basketball.

下列实验现象描述正确的是（　　）

A．氢气在空气中燃烧会产生有刺激性气味的气体

B．肥皂水滴入硬水中，不会产生较多泡沫

C．镁条燃烧后生成氧化镁固体

D．蜡烛燃烧吹灭时会有白雾出现

社会心理学家班杜拉等人进行的有关模仿学习的研究属于（）

A.实验室观察

B.实地观察

C.参与观察

D.物质痕迹观察

简述魏源的贸易思想论。