不同的染色方法可作为细菌鉴别的重要依据，鉴别下列细菌首选的染色方法为脑膜炎奈瑟菌 A

阅读理解。

     The computer is a very good machine. It can do a lot of everyday work so people can use it in many

ways. 

     Writers can use it to write interesting stories. Painters can use it to draw beautiful pictures. If you like

talking, you can talk to people from anywhere on the computer. You can watch movies and listen to music.

     Many children like playing games. Computers can help you. In the shop, someone buys something from

you. You can put the information about the sale (销售). Then the computer can work on the information and

tell you a report (报告) about shopping. In research (研究), if you want to know about the moon, you can

ask the computer and the computer can answer on the screen. In some large factories, you can't see many

people. Why not? Robots can do most of work instead of (代替) people. How does the robot work? The

computer tells it what to do.

     This is our computer. Perhaps one day the computer can think and feel. Then it will make our life better

and better.

1. We can _______ on the computer.

A. not play games

B. get real fruits

C. talk to anyone far away

D. find no information

2. You can't see many people in some large factories because _______.

A. computers can do anything

B. some robots help them

C. people all stay in the room

D. people work on the computer

3. Which of the following is NOT true?

A. People need computers' help

B. People have to use computers

C. Computers can do most of the work

D. Computers can think like people

4. From the passage we can know the word 'robot' means _______ in Chinese.

A. 机器人

B. 储存器

C. 打印机

D. 外星人

5. Which is the best title (标题)?

A. People's Lives

B. Computers

C. How Computers Work

D. The Importance of Computers

上市债券属于（）。

A.可流通债券

B.不可流通债券

C.有担保债券

D.无担保债券

下列不是证券发行市场上的投资者的是( )。

A．人民银行

B．商业银行

C．保险公司

D．社会团体

性染色体数目异常：()

A．脊柱裂儿 

B．13三体综合征（即Patau综合征）儿 

C．无丙种球蛋白症 

D．黑蒙性白痴病 

E．先天性卵巢发育不全症

车刀的材料的性能要求是什么？