生态系统中动物通过哪种作用把有机物变成二氧化碳和水返回无机环境中？ A．光合作用

阅读理解。

     In 1896, the first modern Olympic Games was held in Athens, Greece. Since then many countries have

successfully held the Olympics, such as England, France, Germany, Canada, the USA, Spain and Australia.

     After more than a century the Games returns to its hometown this year.

     When people hold the Olympic Games, they always make an emblem (会徽). The emblem of the Athens

Olympic Games this year is a white circle of olive branches in the sky. Now Athens is developing a spirit of

peace. An officer said,"While in Athens, the world should be at peace. We hope the peace is not just for a

short time. We would like the message from the Athens Games to help countries come together and solve

(解决) their problems." Four years later, the Olympic Games will be held in China. And China has already

made a seal (印章) as the emblem of the Beijing 2008 Olympic Games. The emblem has a single Chinese

character on a red seal and means "Chinese seal-dancing Beijing". Below it, there are the words "Beijing 2008".

The character in the emblem is "Jing". It means "capital" of China and it is also like a runner or a dancer. The

running figure (人形) of the emblem shows the spirit of the Olympics- faster, higher and stronger.

1. In which country was the first modern Olympics held?

A. Greece.

B. Australia.

C. France.

2. What do people always make when they hold the Olympic Games?

A. An emblem.

B. A flag.

C. A map.

3. What message does the Athens Olympic Games want to give?

A. War.

B. Danger.

C. Peace.

4. How many years have passed when Athens again holds the Olympic Games?

A. 100.

B. 108.

C. 112.

5. The spirit of the Olympic Games is _______.

A. history and friendship

B. faster, higher and stronger

C. peace, friendship and development

在2008年央视开年大戏《闯关东》中，从山东龙口港到大连是一条重要的闯关东路线．假设有甲、乙两船同时从龙口港出发，甲船路线是龙口——旅顺——大连，乙船路线是龙口——大连．两船航行两天后都在下午三点到达大连，以下关于两船全航程的描述中不正确的是( )

A．“两船航行两天后都在下午三点到达大连”一句中，“两天”指的是时间，“下午三点”指的是时刻

B．在研究两船的航行时间时，可以把船视为质点

C．两船的路程相同，位移不相同

D．两船的平均速度相同

玉女煎主治证候的病机要点是

A．阴虚胃热

B．脾胃伏火

C．血燥气郁

D．胃有积热

E．肝胃不和

徇私舞弊

在使用药物进行治疗的过程中，医生恰当的做法是（）

A.使用能为医院和医生带来较高回报的药物

B.药物使用与选择是医生的权利，不用征求患者的意见

C.为了尽快取得效果，加大药物剂量

D.按需用药，考虑效价比

E.联合使用多种药物，力求最佳效果