数据资源管理技术是指对数据的分类、组织、编码、存储、（）的技术。 A.加工与处理 B

阅读理解。

     Sixteen years ago a boy gave me an important gift. It was a smile.

     It was the early autumn of my first year at a middle school, and my old school was far away. As a

result, no one knew who I was. I was very lonely, and afraid to speak to anyone.

     Every time I heard the other students talking and laughing, I felt my heart break. I couldn't talk with

anyone about my problems.

     Then one day, when my classmates were talking happily with their friends, I was sitting at my desk

unhappily as usual. At that moment, a boy entered the classroom. I didn't know who he was. He passed

by me and then turned back. He looked at me, with a smile.

     Suddenly, I felt the touch of something bright and friendly. It made me feel happy and warm. That

smile changed my life. I started to talk with other students and made friends. Day by day, I became closer

to everyone in my class. The boy with the lucky smile has become my best friend now.

     One day I asked him why he had smiled, but he couldn't remember doing so!

     It doesn't matter because all the dark days have gone. I believe that the world is what you think it is.

If you think it is lonely, you might always be alone. So smile at the world and it will smile back.

1. When did the writer get the gift?

A. At the age of 16.

B. After making friends with the boy. 

C. In the first year at a middle school.

D. After becoming closer to everyone in the class.

2. Why was the smile an important gift?

A. Because the writer's old school was far away.

B. Because the writer didn't know who the boy was.

C. Because the smile didn't mean anything to the boy.

D. Because the writer felt lonely and had no friends and it made her feel happy and warm.

3. Why didn't the writer talk to anyone in her new school about her problems?

A. Because she was always unhappy.

B. Because she didn't know anyone at the time.

C. Because she was in the first year at the junior high school.

D. Because she didn't want her parents to worry about her.

4. How did the smile change her life?

A. She started to make friends.

B. She became the best friend of the boy.

C. Her parents didn't worry about her any more.

D. She realized that she was lonely.

5. Where does she now think her feeling of unhappiness came from?

A. From her old school.

B. From her parents.

C. From herself.

D. From her classmates at the new school.

分类和对比是学习化学的重要方法。

（1）镁、铝、铁都属于活泼金属，在氧气中均能燃烧生成相应的氧化物。铁在氧气中燃烧的化学方程式为________；铝在氧气中燃烧的产物是________（写化学式）。

（2）碱是一类主要由金属元素和氢氧根组成的化合物，下列物质中，属于碱的是________（填字母序号）。

A．NaOH

B．H₂O₂

C．FeSO₄

D．CaCO₃（3）通过下面甲和乙两个对比实验，分别得出的结论是：甲________；乙________。

甲                          乙

（4）碳酸钾和碳酸钙同属于碳酸盐，碳酸盐与盐酸反应的原理均相似，则碳酸钾与盐酸反应的化学方程式为________。

根据我国《票据法》，关于自然人的票据能力，说法正确的是

A．自然人不享有票据能力

B．每个自然人有平等的票据能力

C．完全民事行为能力人才有票据能力

D．商自然人才具有票据能力

双边条约一般不存在保留问题。

根据《建设工程安全生产管理规定》，施工企业对作业人员进行安全生产教育培训，应在（）之前。

A.作业人员进入新的岗位

B.作业人员进入新的施工现场

C.企业采用新技术

D.企业采用新工艺

E.企业申请办理资质延续手续