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问题 单项选择题

一般来说，占维护工作比例最高的是( )。

A．纠错性维护

B．适应性维护

C．完善性维护

D．预防性维护

答案

参考答案：C

解析：[分析] 在系统维护工作中，占维护工作最多的是对系统功能的补充的完善性维护。

完形填空

当你遇到下面这些问题时，你会怎么解决呢？请对以下问题和解决办法给予合理配对。

Problems:

小题1:Some boys are swimming in the river without permission.

小题2:Sometimes you just get so angry about something.

小题3:You cheat(作弊) at school because you are afraid of failing the exam.

小题4:Someone in our district often wastes water.

小题5:You like to play computer games and spend too much time on them.

Solutions:

A．Work harder at your lessons .If you have problems at school, just turn to your teachers

B．Tell them to leave the river quickly. It is dangerous.

C．Make a time table and reduce the time on computer games little by little.

D．Use your pen to tell your feelings. Write down why you are angry or draw it on a paperE. Put up some posters to ask him or her to save water.
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单项选择题

具有温热、升腾作用的事物归属于 ( )

A．木
B．火
C．土
D．金
E．水
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