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问题 单项选择题

每个日期/时间字段需要( ) 个字节的存储空间。

A．1

B．2

C．4

D．8

答案

参考答案：D

解析： 本题考查日期/时间数据类型的知识。日期/时间数据类型是用来存储日期、时间或日期时间组合的，每个日期/时间字段需要8个字节的存储空间。

问答题 简答题

有丝分裂的遗传意义？
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改错题

短文改错。假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的一篇作文。

文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

注意：1. 每处错误及其修改均仅限一词；

           2. 只允许修改10处，多者（从第11处起）不计分。

     It was 7:15 in the morning of February 8, 2007. I was walking along Park Road towards the east

while an old man came out of the park on the other sides of the street. Then I saw a yellow car drive

up Third Street and made a right turn into Park Road. The next moment the car hit the man while she

was crossing the road. He fall with a cry. The car didn't stop and drive off at full speed going west.

I noticed the driver was young woman wore a pair of glasses and the plate number was AC864. After

two minutes later, I stopped a passing car and took the old man to the nearest hospital.

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