问题 单项选择题

信息系统逻辑模型中包含很多内容。 Ⅰ.系统总体结构 Ⅱ.数据流程图 Ⅲ.数据字典 Ⅳ.E-R图 Ⅴ.过程说明 Ⅵ.模块结构图 上述哪个(些)是信息系统逻辑模型应该包含的内容

A.除了Ⅳ

B.除了Ⅴ

C.除了Ⅵ

D.全部都是

答案

参考答案:C

解析: 逻辑模型的建立是结构化分析阶段的主要任务。在上述内容中:系统总体结构:按照层次结构刻画了信息系统各子系统是如何划分的,以及各子系统的功能模块。数据流程图:描述了企业或机构中整体的或部门的数据、数据流向、数据加丁、数据存储及数据的来源去向。数据字典:是对数据的定义,是对数据逻辑结构的一种描述。E-R图:是利用“方框”、“椭圆框”、“菱形框”、“线段”表示实体及其联系的方式,表达了数据的概念结构。过程说明:是利用结构化语言、判定树、判定表等工具对数据流图中的加工处理的详细处理逻辑的描述。模块结构图:表达了软件结构中模块之间的相与:调用关系。模块结构图是软件设计的一个主要工具。

阅读理解

C

Study-abroad programs are a great way to learn about different cultures. Sometimes students don’t have the money to join in these programs. That is why scholarships for study-abroad programs are starting to become poplar.

Study-abroad programs can often be quite expensive. Finding scholarships is not that difficult. Usually, you can just visit the study-abroad office at your educational institution or even the financial services office. They will have a large directory of available scholarships. If your school does not have these offices, you can just quickly have a look on the Internet and find a wide variety of scholarships you might qualify for.

The credentials(资历) you need to be considered for a scholarship vary greatly. But, to be a candidate for any scholarship, you generally need to have good grades, be an outstanding person, and be able to take full advantage of the opportunities presented to you . You will be able to show why you are a good candidate through the application process.

The application process for each scholarship varies, which usually includes submitting an academic record, an essay, and sometimes an interview.

Usually , you will have to submit your academic records. The administrators of the scholarship will know that you take your academic studies seriously. Next you usually need to write an essay. This could be on a wide variety of subjects , but they usually focus on something related to “why you should get this scholarship” to determine how much you want the scholarship and how good of a candidate you would be. After this, the final few applicants may be asked in for an interview to learn about you and why you would be a good recipient of the scholarship.

If you satisfy all these requirements, there is a good chance you will get a scholarship. If you don’t have enough money, don’t give up but use plenty of scholarship opportunities for you!

51. What do we learn about study-abroad programs from the passage?

A. They are often quite cheap to apply for.    B. They are very difficult to apply for.

C. They are good tools for learning other cultures.

D. They are only found in the study-abroad offices in colleges.

52. To apply for a scholarship, the writer doesn’t mention the credential that_______.

A. You need to speak a foreign language well.

B. you need to have good marks at school.

C. you need to be an excellent student .

D. you need to know when to use the opportunities before you.

53.The main purpose of the passage is _______.

A. to introduce the advantages of study-abroad programs.

B. to show us why scholarships for study-abroad programs are popular

C. to suggest where one can find suitable study-abroad programs

D. to provide tips on applying for scholarships for study-abroad programs

54. To prove whether you take your academic studies seriously, you should ____.

A. write an essay on why you should get this scholarship

B. submit your academic records

C. be interviewed by the administrators of the scholarship

D. prove you are a good recipient of the scholarship

55. In which part of a newspaper would you most probably read this passage?

A. Education      B. Fashion    C. Business    D . Entertainment

单项选择题