英国宪法渊源中的一般制定法，除《大 * * 》之外，还包括（）。A.《权利请愿书》 B.《

阅读理解。

     In Japan many old people don't live with their children. They have no one to talk to. Their life is very

boring. Now a new robot (机器人) comes. It has two big eyes and ears. It looks like a white teddy bear.

There are four cameras and a sensor (传感器) in the robot. It can draw planes. It can also use the

Internet (网络) to find some pictures and draw them down. It is a good friend for the old. It will help them a lot and it can chat (聊天) with them. It can answer some questions,too. Sometimes it also helps them to

find glasses. It doesn't mind listening to the same stories again and again. Lots of children also like it. They can play with it when their parents go to work.

1. In Japan many old people _____ talk with others.

A. usually  

B. often    

C. seldom  

D. always

2. What do many old people think of their lives in Japan?

A. Busy.  

B. Boring.  

C. Interesting.  

D. Colorful.

3. What color is this new robot?

A. White.  

B. Green.  

C. Black.  

D. Brown.

4. How many cameras does the robot have?    

A. 2.  

B. 3.  

C. 4.  

D. 5.   

5. What things can't the robot do?    

A. Chat with others.   

B. Draw pictures.     

C. Use the Internet.     

D. Do housework.    

关于胸大肌的描述，正确的是（）

A.起自胸骨、第1～6肋软骨和锁骨的内侧半

B.止于肱骨外科颈

C.收缩时肱骨后伸

D.收缩时肱骨旋外

E.收缩时牵引肩胛骨向前

两行星的质量分别为m₁和m₂，绕太阳运行的轨道半径分别是r₁和r₂，若它们只要万有引力作用，那么这两个行星的向心加速度之比[ ]

A．1

B．

C．

D．

简述遗传性和诱发型动物疾病模型的概念及优缺点。

如果有3个进程共享同一互斥段，而且每次最多允许两个进程进入该互斥段，则信号量的应设置为（）。

A．3

B．2

C．1

D．0