母线的作用？

阅读理解 。

   Overseas Chinese youths, such as Chinese Americas, Chinese Canadians, and Chinese Australians

are growing up in two different kinds of culture’s. Sometimes they are confused about the culture of

the society and the Chinese cultural background of their family. "Which country is my motherland?"

"Where is my original hometown?" and "Who is my grand grandmother?" are some of the questions

they may ask. To answer these questions, a root-searching tour was organized. It was a perfect way

to help them find the answers themselves. The youths got the chance not only to go sightseeing but

also to experience the colure in the local places.    

     After the camp, Sam, a Chinese American, said that this time he came to Beijing to see the Great

Wall of China with his own eyes. The next time he comes, he wants to watch the    

     Olympic Games in Beijing in 2008. A girl from Canada said that she learned very little from books

and her parents, but now she deeply experienced the culture. Most of them realized the links between

themselves and China at Root-Seeking Camp.    

     One said,"With only what my parents say, I can't feel proud of my Chinese origin, but now I not

only feel proud of my motherland but also love her. I will remember this root searching tour for ever. "

1. Who were the member of the summer camp? 

A. Students from Western countries.              

B. Overseas Chinese adults,              

C. Overseas Chinese youths.              

D. Overseas Chinese old people.

2. Why was the summer camp organized?    

A. To experience the two cultures.              

B. To find the answers to some puzzles.              

C. To do some sightseeing in China.              

D. To find the links between teenagers and China.

3. What does the author think of the root-searching tour?  

A. It is a perfect way for overseas Chinese youths to experience Chinese culture.             

B. It is a good chance for overseas Chinese youths to learn Chinese.             

C. It is a way to build good relationship between the teenagers and their parents.              

D. It is a good idea for overseas Chinese to come to China.

4. What does the girl from Canada think?            

A. Reading is a good way to learn about different cultures.            

B. She prefers personal experience to books and parents' stories.            

C. She has learned a lot about Chinese culture from books and her parents.            

D. She can watch the Olympic Games in Beijing in 2008.

5. What was the result of the root-searching tour?              

A. The teenagers feel proud of their Chinese origin.              

B. The teenagers were confused about their Chinese origin.              

C. The teenagers would come to see the Olympic Games in Beijing in 2008.              

D. The teenagers experienced Chinese culture and felt proud of it.

下述主动脉瓣关闭不全的描述中，哪一项是错误的（）

A.左心室肥大

B.右心室肥大扩张

C.心绞痛

D.水冲脉

E.主动脉瓣区吹风样收缩期杂音

中国最早出现的货币是铜铸币，是出现在（）时期

A、春秋

B、西汉

C、战国

D、北宋

患者，男，23岁，患慢性肠痈3年，时常发作。根据合穴或下合穴的理论，其病最可能出现反应的穴位是（）

A.足三里

B.上巨虚

C.阳陵泉

D.委阳

E.下巨虚

党的十八大报告提出：积极推进党内民主建设，要推行地方党委讨论决定重大问题和任用重要干部（）。

A.责任制

B.票决制

C.问责制

D.追究制