灭火救援总指挥部根据紧急需要，可以要求（）救护、环卫、交通运输以及驻军、武警部队、交

表面活性剂由于能在油水界面定向排列而起

A．乳化作用
B．助溶作用
C．增溶作用
D．潜溶作用
E．絮凝作用

阅读理解。

Ben: Leo, you work too hard. Let's go and sit in the park.

Leo: I can't do that. I have to study for my English test next week.

Ben: But, Leo… You already know that you're going to Tsinghua University!

       Well, what are you going to major in?

Leo: English and management. How about you? Which school are you going to next year, Ben?

Ben: Oh, I'm going to work for my dad for a year. Then I'll go to college after that.

Leo: What do you want to study?

Ben: I'm not sure yet. I'd like to study Chinese. So, do you want to be an English teacher or work

       for a big company after 4 years in Tsinghua University?

Leo: In fact, I hope to go on to study computer science in Beijing University.

Ben: Wow. We are quite different! You know, I just want to find an easy job.

        I guess you will be a computer programmer.

Leo: Uh-huh. I'd like to.

Ben: Well, I hope to work as a teacher and have a nice family in the future.

Leo: Really? I want to make a lot of money.

1. What does the sentence "I can't do that?" mean?

A. I can't do anything.

B. I can't work.

C. I can't go to the park.

D. I can't study.

2. What does the sentence "I'll go to college after that." mean?

A. after I left middle school

B. after one year

C. after I work for my father

D. Both B and C

3. Who may become a computer programmer after 4 years?

A. I don't know.

B. Leo.

C. Ben.

D. Both of them.

4. What is Leo going to study after he leaves Tsinghua University?

A. Management

B. Chinese

C. Computer Science

D. English

5. What plan does Ben have for his future?

A. To be a teacher

B. To make a lot of money

C. To be a compute programmer

D. Both B and C

解释古文划线字词（5分）

小题1:是吾剑之所从坠（     ）   

小题2:反归取之（    ）      

小题3:遽契其舟（    ）

小题4:及反（    ）              

小题5:明察秋毫（     ）

教育行政活动，与其他行政活动如一般公共行政、企业行政等相比，有哪些特点？

简述数控机床工作原理？