下列关于股东财富最大化目标的表述中，正确的有（）。 A.考虑了风险因素 B.在一定程

已知集合A={x|x²＞1}，B={x|log₂x＞0}，则A∩B=   　 [     ]

A．{x|x＜﹣1}

B．{x|＞0}

C．{x|x＞1}

D．{x|x＜﹣1或x＞1}

阅读理解。

     China is the country with the largest population in the world. Too many people cause many problems such

as food problem. And today, China's population is still growing very fast. So in order to control the population,

China has formulated the policy of family planning, that is,late marriage, late childbirth and fewer but healthier

children. Men of 22 years old and women of 20 years old can get married (结婚). If a man of 25 or over 25

gets married with a woman of 23 or over 23, their marriage is a late marriage. Children by a woman at the age

of 23 or late is a late childbirth. The country encourages people to have only one child. Family planning is a

useful policy to control China's population. And it is still needed in China in following years.

1. What is the passage about? [ ]

A. China's population problem

B. China's family planning

C. China's late marriage

D. China's childbirth

2. China has formulated the policy of family planning because ______.[ ]

A. population problem can cause many other probolems

B. China has too many people

C. China wants to control its population

D. A, B and C

3. Which of the following is a late marriage? [ ]

A. A man of 26 with a woman of 23.

B. A man of 25 with a woman of 22.

C. A man of 23 with a woman of 23.

D. A man of 23 with a woman of 20.

4. The word "encourage" in the article means ______.[ ]

A. 赞助

B. 提醒

C. 鼓励

D. 逼迫

5. Family planning is ______ in today's China. [ ]

A. not needed

B. still needed

C. not good

D. useless

宋代北方人的主食是[ ]

A．米饭

B．面食

C．肉类

D．鱼类

DDN异步传输速率为50bit/s至（）Kbit/s。

为提高数据传输的可靠性，可采用“冗余校验”的方法；海明码是常用的方法之一。在此方法中，若要求能检测出所有的双位错，并能校正单位错，则合法码字集中的码距至少为 (127) 。若原始数据的字长为5位，则采用海明码时其校验位至少为 (128) 位。

对图1-22的图(a)所示系统，仅当部件1，部件2和部件3，全部正常工作时，系统才能正常工作。图中数字为各部件的可靠性，整个系统的可靠性近似为 (129) 。如果将部件2和部件3改成由两个器件构成，如图(b)所示，只要器件a和b中有一个正常就能使部件2正常工作，只要器件c和d中有一个正常就能使部件3正常工作。图中数字是各器件的可靠性，则部件2的可靠性是 (130) ，整个系统的可靠性近似为 (131) 。

（131）处填（）。

A．0.82

B．0.90

C．0.94

D．0.96