. (4 ) A． B． C． D．

阅读理解。

     Chinese actors and actresses are very famous and popular in the world. Jackie Chan is one of the

  famous actors. He often acts in the action movies. Many people ,old and young like him very much. He is

  very brave when he acts.

     Yang Ziqiong is also a very famous actress. Yang Ziqiong's English name is Michelle. One of her films is

  Grouching Tiger, Hidden Dragon (《卧虎藏龙》). It won 4 Oscars in 2001.

     Ge You is a great actor in China. He is my favorite movie star. He has many movies. His new movie is

  Mobile Telephone. It's a good movie. Many of us like this movie. In this movie, there are many famous

 actors and actresses. They can make us laugh. At the same time, it can make us think a lot. This movie is

  on (上映) in many cinemas now.

1. There are _____ famous actorsin this article(文章),

    A. one    

    B. two  

    C. three   

   D. four

2. Who acts Mobile Telephone?

    A. Jackie Chan    

    B. Yang Ziqiong      

    C. Xiao Shenyang  

    D. Ge You

3. Actresses means _____.

    A. 年轻演员

    B. 老年演员

    C. 男演员

    D. 女演员

4. The writer's favorite movie star is _____.

    A. Zhao BenShan  

    B. Yang Ziqiong

    C. Ge You  

    D. Jackie Chan

5. Yang Ziqiong is a_____.

   A. man  

   B. boy

   C. women  

   D. Sorry, I don't know.

为解决能源危机，在汽油中掺入一定比例的乙醇（即“乙醇汽油”），以代替一部分汽油．乙醇在气缸中完全燃烧的热化学方程式为：

1

2

C₂H₅OH（l）+

3

2

O₂（g）=CO₂（g）+

3

2

H₂O（l）△H₁=-683.4kJ/mol．下列说法正确的是（　　）

A．该反应过程中，断裂化学键会放出热量

B．该反应中，生成物的总能量大于反应物的总能量

C．乙醇的燃烧热为683.4 kJ/mol

D．反应

1

2C2H5OH（l）+ 3 2 O2（g）=CO2（g）+ 3 2 H2O（g）的△H2＞-683.4 kJ/mol

在计算机领域中通常用MIPS来描述______。

A．计算机的运算速度

B．计算机的可靠性

C．计算机的可运行性

D．计算机的可扩充性

下列决策方法中承担风险最大的是（）

A.极大极小损益值法

B.极大极大损益值法

C.极小极大后悔值法

D.期望值法

下列不能由帕累托效率引出的一项是（）

A、交换的效率

B、生产的效率

C、产品组合的效率

D、所有人平等地分享收入