下列关于Windows 2003系统DNS服务器的描述中，正确的是（）A．DNS服务

阅读理解。

     Barack Hussein Obama has made history by becoming the first African-American president in American

history.

     Barack Obama was born in Hawaii on August 4,1961. His parents separated (分开) when he was two

years old and later divorced (离婚). Obama grew up with his mother in Hawaii,and for a few years in

Indonesia. Later, he moved to New York,where he graduated from Columbia University in 1983. Obama met

his wife, Michelle Robinson,in June 1989 and married her on October 3, 1992. The couple's first daughter,

Malia Ann, was bom in 1998, followed by a second daughter, Natasha ("Sasha"), in 2001.

     Obama's success is a true milestone (里程碑) . It speaks to the fact that in America you really do get a

chance to do anything, if you have the talent and ability and you work hard enough.

     Obama will not take office until 20 January, 2009. However, when he does become president, he will

face many serious challenges, including two foreign wars,climate change and what he has described as "the

worst financial crisis (经济危机) in a century". But Obama himself is ready to face these challenges.

1. How old is Barack Obama when he becomes American president?

A. 48.

B. 40.

C. 37.

D. 31.

2. Obama's success tells us that ______.

A. any black people can become president

B. you can succeed if you are talented enough

C. everyone can succeed if he is lucky enough

D. a talented person can succeed if he works hard enough

3. What does the underlined phrase "take office " in the last paragraph mean?

A. 生效

B. 就任

C. 离职

D. 竞选

4. According to the passage, Obama will face the following challenges except ______.

A. climate change

B. financial crisis

C. population problem

D. foreign wars

5. The whole passage is mainly about Obama's ______.

A. childhood

B. family

C. education

D. experience

下列车船中，不属于免征车船税的是()。

A.警用车辆 

B.捕鱼机动车辆 

C.商用客车 

D.军队专用车辆

交流电路电压380V，电流12A，功率因素0.8，求有功功率？

People say that a mother’s love knows no boundaries (边界). This is true when it comes to my mother. She has given up many things so that my sisters and I could live a better life.

My mother comes from a large family and her parents died when she was quite young. She dropped out of school when she was fifteen because no one could afford to pay her studies. At the age of 19, she married my father and when they had my sisters and I, they moved to the United States so that we could have a better life. My parents did not know English but somehow they communicated with other people. My mother stayed at home and raised us while my father was working. There were so many dangerous incidents that happened where we lived that my mother finally decided that we all moved to Texas when I was seven.

My mother has worked so hard to give us everything. She always tells us that all she wants is for us to be happy.

As the saying goes, “You don’t appreciate (意识到) something until it’s gone.” Well, I finally had a chance to experience it. My mother went to Mexico this winter because she needed to have an operation. It was the first time in my life that my mother was not there to hold and comfort me. Those two weeks when she was away made me realize how much I love her. All she has done for me is incredible (难以置信的). When I suffer she suffers with me. I have to show her how much I care about her. She means the world to me.

小题1:Which is the RIGHT order of the following events?

a. My mother married my father.

b. My mother went to Mexico to have an operation.

c. We all moved to Texas.

d. My mother dropped out of school.

e. They moved to the United States.

f. My mother’s parents died when she was young.

A．a, b, f, c, d, e

B．d, e, a, c, f, b

C．f, d, a, b, e, c

D．f, d, a, e, c, b小题2:What does the underlined word “it” refer to in the fourth paragraph?

A．My mother’s experience.

B．My mother’s care for me.

C．The meaning of the saying.

D．My mother’s love.小题3:The writer didn’t realize that he loves his mother very much until ______.

A．they moved to Texas

B．his mother told them all she wanted was for them to be happy

C．his mother left home for an operation

D．his mother died小题4:According to the passage, we can infer that the writer writes the passage in a(n) ______ mood.

A．affectionate (挚爱的)

B．humorous

C．serious

D．bitter

单向阀的作用是变换液流流动方向，接通或关闭油路。