2011年5月第36题以下编码方法中，（）属于熵编码。 A.赫夫曼编码 B.小波变换

美国哲学会的研究显示，如今越来越多的人开始学习哲学，原因在于，在当今金融危机的影响下，哲学知识可以帮助人们更好地思考问题，提高对人生观、价值观的认识。这说明(　　)

A．真正的哲学能够为生活提供积极有益的指导

B．学习哲学可以为我们提供科学的世界观和方法论指导

C．哲学是系统化理论化的世界观

D．学好哲学就可以做好各项具体工作

One of the most widely discussed subjects these days is. energy crisis. Automobile drivers cannot get gasoline; homeowners may not get enough heating oil; factories are (56) by a fuel shortage.
The crisis has (57) questions about the large oil companies and windfall (58) . Critics of the oil industry charge that the major companies are getting richer because of the oil shortage. Shortage, of course, drives prices up. As oil prices rise, the critics say, the oil companies will make more money (windfall profits) without doing a thing to (59) the extra cash. "Windfall" profits are sudden unearned profits--profits made (60) luck, or some special turn of events.
The word itself tells what "windfall" means--something blown down by the wind, such as trees, or fruit (61) from trees. But the word has taken on a special meaning. This meaning (getting something unearned) was first used in medieval England.
This is (62) it started: at that time much of the land was in the hands of (63) barons. The rest of the people, commoners, lived and worked on their vast estates. They planted the seed, cared for the farm animals and harvested the crops. Not all the land, however, was used for farming. Every baron kept a large private forest for (64) deer and wild bear.
When hungry, the people sometimes would kill the animals in the lord’s forest for food. And there were times (65) they might cut down trees for fuel. So, p laws were passed to protect the forests, and the animals. Violations were severely (66) .
But there was one way people could get wood from the forest. If they found trees blown down by the wind ("windfall") they were free to take them for use as fuel in their homes. And that is the meaning that has come down to us--something good gotten by luck or (67) .
The common people of old England, often hungry and cold, must often have prayed for a good p wind. Critics today (68) that the oil industry has also been praying for something just like it --some political or military (69) that might produce a windfall--a rise in oil prices and profits.
The oil companies deny that this is so. In Congress, critics of the oil companies have proposed a (70) on such profits. The debate on rising oil price will go on for some time, and most likely we will hear more and more about windfall profits.

Part Ⅳ Cloze
Directions: In this part, there is a passage with 15 blanks. For each blank, there are 4 choices marked A, B, C and D. Choose the best answer for each blank and mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.

A．except

B．because of

C．beyond

D．for

胸骨左缘第二肋间连续性机器样杂音，胸片示主动脉弓及肺动脉段突出，肺血增多。下述疾病不可能（）

A.房间隔缺损

B.室间隔缺损

C.肺动脉瓣狭窄

D.动脉导管未闭

E.法乐氏四联症

在数据库系统的组织结构中，下列( )映射把用户数据库与概念数据库联系了起来。

A．外模式/模式

B．内模式/外模式

C．模式/内模式

D．内模式/模式

辅助供电系统是指除为牵引动力系统之外的所有需要用电的负载设备提供电能的系统，包括辅助供电系统和（）系统。