问题 单项选择题

设有如下说明,请凶答(16)~(21)小题:
有"tEmployee"表,表结构及表内容如下所示:
字段名称字段类型字段大小
雇员ID文本10
姓名文本10
性别文本1
出生日期日期/时间
职务文本14
简历备注
联系电话文本8


雇员
ID
姓名性别出生日期职务简历联系电话
1王宁1960-1-1经理1984年大学毕业,曾是销售员35796450
2李清1962-7-1职员1986年大学毕业,现为销售员

35976451

3王创1970-1-1职员1993年专科毕业,现为销售员3579452
4郑炎1977-6-1职员1999年大学毕业,现为销售员35976453
5魏小红1934-11-1职员1956年专科毕业,现为管理员35976454

若要确保输入的联系电话值只能为8位数字,应将该字段的输入掩码设置为( )。

A.00000000

B.99999999

C.########

D.

答案

参考答案:A

解析: 选项A中"00000000"是要求输入最多8位0~9的数字,满足题目要求:选项B中"99999999"是要求输入最多8位数据或空格,不符合题意;选项C中"########"是要求输入最多8位数据或空格,,不符合题意,此处还要注意"#"与"9"的区别:选项D中""是可以选择输入最多8位A~Z的字母,不符合题意。

阅读理解

Molly信箱是一个报刊栏目,主持人Molly回答读者提出的各种问题。第1至5题是五位读者的来信。

请从A、B、C、D、E和F中为每封来信选出最合适的回复。选项中一项是多余选项。

( )1. Dear Molly,

     I have a problem. My parents are always talking to me about studying. They want me to study harder

so I can go to a good school. I know studying is very important, but my parents put too much pressure

on me. How can I explain to my parents that I need some free time?

                                                                                                                         ------ Overworked

( )2. Dear Molly,

     My best friend Tony is a nice young man, but he has a bad habit. He is always late. No matter where

he is going to what he is doing, he is never on time. Once he turned up thirty minutes late for a meeting!

What can I do to break him of this bad habit? 

                                                                                                                         ------ Worried

( )3. Dear Molly,

     I have a new roommate named Louis. He is a good friend of mine, but he is driving me crazy because

he is very untidy. He leaves his dirty clothes everywhere, and he never makes his bed. I am extremely neat.

What can I do?

                                                                                                                        ----Unhappy

( )4. Dear Molly,

     My cousin plays computer games a lot and he keeps on talking to me about various games. I don't have

any interest at all, but I find it difficult to stop him without hurting his feelings. Would you kindly give me

some advice?

                                                                                                                        --- Shy

( )5. Dear Molly,

     I'm feeling upset these days because the result of my last English exam was not as good as I had expected. My teacher comforted me, saying "Don't worry. You can do better next time." But I'm still feeling bad. I need

your help. 

                                                                                                                        ----Disappointed

A.

B.

C.

D.

E.

F.

单项选择题