已知关于x、y的方程组ax+by=5bx+ay=7的解是x=2y=1，求a+b的

水泵的种类不包括( )。

A．离心泵

B．抽水泵

C．混流泵

D．真空泵

被称为“中精之府”的是（）

A.脑

B.髓

C.骨

D.脉

E.胆

阅读理解。

     People need to relax and enjoy themse1ves.One way they can have a good time is to watch a baseball

game or another sports event. Even thousands of years ago, groups of people gathered to watch skilled

athletes (运动员). 　　

     Over 2000 years ago in Greece, certain days in the year were festival days. These were holidays when

people stopped work and enjoyed themselves. They liked to watch athletes take part in races and other games

of skill. 　　

     The most important festival was held every four years at the town of Olympia. It was held in honor of the

Greek god Zeus(Zus). For five days, athletes from all parts of the Greek world took part in the Olympic Games. At the Olympic Games, people could watch them box, run, jump and so on. There was a relay race between

two teams of men in which a lighted torch (火矩) was passed from runner to runner. The Olympic Games

were thought to be so important that cities which were at war with one another had to stop fighting. People

were allowed to travel to the games safely. Thousands of people came to Olympia from cities in Greece and

from her colonies(殖民地)in Africa, Asia and Italy. They met as friends to cheer their favorite athletes and to

enjoy themselves.

1. What happened in Greece over 2000 years ago? 　

A. People stopped work and enjoyed themselves. 　　

B. The cities there were often against one another. 　　

C. People watched baseball games. 　　

D. People didn't go to any games at all. 　

2. What were those countries in Africa?

A. Friends

B. Enemies

C. Colonies

D. Other cities 　　

3. What did people do at the games? 　

A. They fought.

B. They just talked to friends. 　　

C. They cheered for good athletes.

D. They tried to find friends. 　　

4. Greek cities then were fighting so they_____. 　

A. were weak

B. were strong 　　

C. couldn't go to other cities freely

D. could see each other 　　

5. The best title for the story is "_____". 　　

A. Greece at War

B. Together for the Games

C. Stop Fighting

D. Sport

从法律规则形式特征上看，可分为规范性规则和标准性规则。规范性规则指规则的内容明确、肯定和具体，且可直接适用的规则；标准性规则则指法律规则的部分内容或全部内容(事实状态、权利、义务、后果等)具有一定伸缩性，须经解释方可使用且可适当裁量的规则。 根据上述定义，下列属于规范性规则的是( )。

A．“早六点至晚六点间本街道禁止通车”

B．“每一选民在一次选举中只有一个投票权”

C．“民事活动应当尊重社会公德，不得损害社会公共利益”

D．“行政机关作出责令停产停业、吊销许可证或者执照、较大数额罚款等行政处罚决定之前，应当告知当事人有要求举行听证的权利”

下列关于赔偿委员会的说法，哪些选项正确( )

A．只有中级以上的人民法院才有权设立赔偿委员会

B．除人民法院作为赔偿义务机关之外，其他刑事赔偿案件由赔偿委员会处理之前必须先经过刑事赔偿复议程序

C．赔偿委员会是专为解决刑事赔偿诉讼案件而在人民法院内部设立的一级独立机构

D．赔偿委员会处理刑事赔偿案件时，虽然采用的是一种非诉讼程序，但它作出的赔偿决定，具有相当于法院判决的效力，其决定为终局性的决定