问题 单项选择题

规范化理论是关系数据库进行逻辑设计的理论依据。根据这个理论,关系数据库的关系必须满足:其中每一属性都是()。

A.互不相关的

B.互不分解的

C.长度可变的

D.互相关联的

答案

参考答案:B

解析:数据库的并行处理是提高数据库系统对事务快速响应能力的有效手段。并行数据库系统的体系结构主要有3种:共享内存结构、共享磁盘结构和无共享资源结构。

阅读理解

Have you ever heard of the group Westlife? Maybe you have, but I’m sure many of you don’t know very much about it.

Westlife is an Irish boy band group, which was made up of 6 boys in the beginning and called IOU. The group quickly became popular with young people thanks to their song Swear It Again, which was at the top of the UK charts (排行榜) in April 1999.

Chinese fans got their first chance to see Westlife on March 6th, 2006 in Beijing. Although the four-member group has been singing pop for seven years, the young boys have all since grown up and their songs are still very popular. When they performed in Beijing, Westlife released (发行) their new album Face to Face in China. Face to Face has been at the top of the British charts for a long time. The album’s most popular song You Raise Me Up mixes traditional Irish music with pop music.

Although hip-hop is quite popular among the young, Westlife has no plans to change. They said, “Hip-hop is for the young, but pop can be enjoyed by moms who are busy cooking meals and raising the kids.

小题1:Westlife is from _________.

A.America

B.China

C.Ireland

D.Germany小题2:The number of people in the group __________ between 1999 and 2006.

A.went from 6 to 4

B.went from 4 to 6

C.went from 5 to 4

D.didn’t change小题3:What happened on March 6th, 2006?

A.Chinese fans fell in love with Westlife.

B.Chinese fans were first introduced to Westlife.

C.Chinese fans first heard Westlife’s songs.

D.Chinese fans could see Westlife in Beijing.小题4: Which of the following is Not true about Westlife’s new album Face to Face?

A.Swear It Again is one of the songs in the album.

B.You Raise Me Up mixes traditional Irish music with pop music.

C.The new album came out in 2006.

D.Face to Face was popular in Britain.小题5:What style of music does Westlife make?

A.Hip-hop music

B.Pop music

C.Rock music

D.Classical music

多项选择题