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问题 单项选择题

数据管理技术随着计算机技术的发展而发展。数据库阶段具有许多特点，但下面列出的特点中( )不是数据库阶段的的特点。

A．采用复杂的数据结构

B．无数据冗余

C．数据共享

D．数据具有较高的独立性

答案

参考答案：B

句型转换

1. We often see Daniel practice speaking English in the English corner. (改成被动语态)

　 Daniel is often                     practice speaking English in the English corner.

2. My grandpa offered me good advice. (改为感叹句)

                    advice my grandpa offered me!

3. I didn’t get to the cinema in time because I lost my way. (保持句意基本不变)

I didn’t get to the cinema in time                    the loss of my way.

4. That girl with a smile is clever and polite.(对划线部分提问)

         is the girl with a smile            ?

5. He’s already been late for school so many times. (改为一般疑问句)

        he been late for school so many times         ?
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单项选择题

各级安全卫生责任制发布后，应通过有效的沟通方式确保各岗位人员知晓，因工作需要岗位调整，其安全卫生责任制培训一般应在（）进行。

A.岗前

B.在岗期间

C.调岗后

D.离岗前
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