试题与答案

在数据库中,下面列出的数据模型的3个要素中,用于描述系统的动态特性的要素是Ⅰ.数据结

题型:单项选择题

题目:

在数据库中,下面列出的数据模型的3个要素中,用于描述系统的动态特性的要素是Ⅰ.数据结构 Ⅱ.数据操作   Ⅲ.完整性约束

A.Ⅰ

B.Ⅱ

C.Ⅰ和Ⅱ

D.Ⅱ和Ⅲ

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析: 基金份额净值=(基金资产总额-基金负债)/基金总份额=(200×20+300×20+500×10+10000-5000-5000)/10000=1.50(元)。

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小题1:I have given you some          (具体的,明确的)examples.

小题2:They            (采用) different approaches to the problem.

小题3:This novel is             (典型的)of his early work.

小题4:He told me with            (悲伤)that his mother was ill.

小题5:His casual clothes were not               (适当的)for such a formal occasion.

小题6:Your room looks old. Why not           (改造,转换) it by painting it.

小题7:The lady has an expensive ring with a d          in the center.

小题8:My father has q         smoking.

小题9:There are many            (幸存者)from the fire for the timely rescue.

小题10:All the            (女性的)workers are from China.

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题型:阅读理解

Last month, students from one hundred and three universities in eighty-eight countries took part in an international computer programming contest, which took place in Harbin, China. Three-person teams from each school had five hours to solve eleven real world problems.

The students first listed the problems in order of difficulty. Then they figured out the requirements of each. They designed ways to test their solutions. And they wrote the needed software systems. Even the winning team from Shanghai Jiaotong University in China was not able to solve all the problems within the given limit. Stanford’s team solved five problems and finished in fourteenth place. Stanford was one of twenty-one American universities that took part in the contest this year.

The official name of the Battle of the Brains is the ACM International Collegiate Contest. The first final competition was held in 1977 at the Association for Computer Machinery Computer Science Conference. Today, a network of universities holds area competitions that send the winners to the world finals, now organized by IBM.

Contest spokesman Dong Heintzman says the world champions receive prizes and scholarships. They are also guaranteed an offer of employment or internship(实习) with IBM. He said, “We have had past world champions that IBM has gone and employed in our Zurich research laboratory and are now working on some of the leading edge materials in science and physics. We have a world finalist from China who’s been working on the Watson Supercomputer that in the near future will be playing Jeopardy(一种超级计算机名称)against the best Jeopardy players in the world. So this competition is an opportunity to be recognized and to be recruited(招聘) by some of the top technology and research firms around the world.”

小题1: From the first paragraph we can figure out there were _______ programmers taking part in the contest.

A.3

B.88

C.246

D.a lot of小题2: From the last paragraph we know that _______.

A.the winners will be offered a job in IBM

B.this contest provides a chance for the universities

C.this competition is held every four years

D.many big companies are short of programmers小题3: What is the best title of this passage?

A.The Best Top Contest

B.The Battle of the Brains

C.The Difficult Competition

D.Courage and Wisdom Needed

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