问题 单项选择题

SQL语言是一种 (96) 语言,其主要功能有 (97) ,它的典型句型为;
SELECT A1,A2,...An
FROM R1,R2,...Rm
WHERE F
其中Ai(i=1,2,…,n)、Rj(j=1,2,…,m)和F分别是 (98)
关系模式学生成绩表(S#,C#,Score)中S#是学生的学号,C#是课程号,Score是学号为S#学生的C#号课程的成绩。若要查询每门课程的平均成绩,且要求查询结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,可用SQL,语言写为 (99) 。若查询的结果仅限于平均分数超过85分的,则应 (100)

A.目标表列名、基本表名、逻辑表达式
B.基本表名、目标表列名、数值表达式
C.基本表名、目标表列名、逻辑表达式
D.目标表列名、基本表名、数值表达式

答案

参考答案:A

阅读理解

When you are feeling unhappy or forget how great you are, these are six ways to make you feel good about yourself.

☆ Look in the mirror and say to yourself, “I am a special person and there’s no one in the world like me. I can do anything!” It may not sound so good, but it really works!

☆ Do something nice for someone. Helping others always makes you feel good.

☆ Smile! Be friendly to people you meet. Look for the good things in your friends and family.

☆ Learn something new! Have you always wanted to decorate your own room or learn how to swim? Go for it! New challenges (挑战) are fun and give you a sense of accomplishment when you have finished.

☆ Read and start a diary. Turn off the TV and let your imagination fly! Write down your thoughts, dreams or anything you want! Writing always helps to express (表达) your feelings.

☆ Stay with your family. We all need our family time. Talk with your parents or maybe even your cousin.

小题1:This passage may be taken from ________.

A.a science book

B.a magazine

C.a story book

D.school rules小题2:According to the passage, when you are helping others, you will ________.

A.be special

B.be sure

C.feel good

D.be remembered小题3:What do the underlined words “a sense of accomplishment” mean?

A.成就感

B.忧伤感

C.挫折感

D.信任感小题4:Which of the following should you say “NO” to when you are unhappy?

A.Look for the good things of others.

B.Learn something new and go for it.

C.Keep a diary to express your feelings.

D.Stay alone at home as much as possible.小题5:The best title for the passage is ________.

A.Do Your Best

B.Always Smile to Your Life

C.It’s Never too Late to Learn

D.Ways to Feel Good about Yourself

单项选择题