下列气体说明空气中含有哪些成分？ (1)小白鼠在盛有空气的密闭容器中存活了一段时

       Robots are smart.  With their computer brains,  they help people work in dangerous places or do

difficult jobs. Some robots do regular jobs. Bobby, the mail carrier , brings mail to a large office building

in Washington, D. C.He is one of 250 mail carriers in the United States.

       Mr Leachim , who weighs two hundred pounds and is six feet tall,has some advantages as a teacher. One is that he does not forget details.  He knows each child's name, the parents' names and what each

child knows and needs to know. Except that,he knows each child's petsand hobbies. Mr Leachim does

not make mistakes.  Each child goes and tells him his or her name,  then dials and an ID number.   His

computer brain puts the child's voice and number together. He identifies the child with no mistakes. Then

he starts the lesson.

       Another advantage is that Mr Leachim is flexible. If the children need more time to do their lessons

they can move switches. In this way they can repeat Mr Leachim's lesson over and over again.When the

children do a good job,  he tells them something interesting abouttheir hobbies.  At the end of the lesson

the children switch Mr Leachim off.

1. What work can robots do?      

A. Safe work for people.

B. Usual work.

C. Very easy work.

D. Operate the computer

2. What is about Mr Leachim?   

A. He is very fat.  

B. He is very tall.

C. He is a teacher.  

D. He is a robot.

3.What is Mr Leachim's advantage as a teacher?   

A. Talk with his children

B. Remember the details.

C. He strict with his children.

D. Teach the lessons well.

4. Which one is the RIGHT order?

a. His computer brain puts the child's voice and number together.

b. Then he starts the lesson.

c. Each child does and tells him his or her name , then dials and an ID number.

d. He identifies the child with no mistakes.

A. c-d-b-a  

B. b-d-c-a  

C. c-a-d-b  

D. b-c-a-d

5. The word "flexible" means ______.

A. 严格的

B. 灵活的  

C. 和蔼的

D. 幽默的

下列各句中加粗的词语使用恰当的一项是[ ]

A．我后悔没有把你抱紧，千古之恨化作永远的沉默，树立在我和世界之间。

B．妈妈和珍珍在低语，悄悄商量给你穿什么衣服，仿佛是要带你去作客。

C．可是，我心里明白，我对你的爱远远多于父亲本能，别人的孩子诚然不同于自己的孩子，自己再生一个又岂能填补你留下的空缺?

D．我最后一次抚摸你的小手，它仍是柔软的，但已经逐步变凉而松弛，不再能用灵巧的抓握应答我的触摸。

人民警察有下列哪项行为之一并不听制止，可能造成恶劣影响的，可以对其采取禁闭的措施( )

A．酗酒滋事，扰乱工作秩序和公共秩序的

B．其他有必要采取禁闭措施的

C．违反纪律构成犯罪的

D．威胁、恐吓、蓄意报复他人的

乙醇中毒患者可出现的红细胞形态改变是（）

A.镰形红细胞

B.口形红细胞

C.球形红细胞

D.椭圆形红细胞

E.靶形红细胞

患者，女，37岁。闭经，伴有潮热，出汗，查体：子宫、附件无异常所见，曾做雌激素试验（+）。

该患者的诊断首先考虑为（）

A.子宫性闭经

B.下丘脑性闭经

C.垂体性闭经

D.多囊卵巢综合征

E.卵巢功能早衰