问题 单项选择题

假设某公司营销系统有营销点关系S(营销点,负责人姓名,联系方式)、商品关系P(商品名,条形码,型号,产地,数量,价格),其中,营销点唯一标识S中的每一个元组。每个营销点可以销售多种商品,每一种商品可以由不同的营销点销售。关系S和P的主键分别为__(58)__,S和P之间的联系类型属于__(59)__。为查询产于"上海"且商品名为"冰箱"或"电视"的型号及价格,并要求价格按降序排列。实现的SQL语句如下:

空白(60)处应选择()

A.商品名='冰箱'OR商品名='电视'

B.商品名=冰箱OR商品名=电视

C.商品名='冰箱'AND商品名='电视'

D.商品名=冰箱AND商品名=电视

答案

参考答案:A

阅读理解

Now, there is a new-type school in New York, which has no everyday lessons, no class teachers and even no school buildings. It is called “City-as-School”. The name just means the city itself is the place where students learn their lessons. They are from the age of 15 to 18. The students choose areas of work which interest them. Then they help to do that work. One girl spends her week in a government office helping the public with problems like housing. Then she goes to help in a theatre for a day and she spends a week for first-year courses at college.

Well, students have to pass Maths and science exams before they enter the “school”. These subjects are not easy to provide in“City-as-School”. Teachers watch the progress of the students. The success rate (比率) is high. 80% of the students go to college after the “City-as-School”.

The students like the duty of their work. They have the sense of purpose. They know a lot about different kinds of work in the city. One of the students, Lizette Martinez, writes “ I want to say that I do not know where I would be right now if I had never become part of City-as-School. Leaving my regular high school and going to City-as-School was the best decision I have ever made. The way the school works to get you to go out there and learn different fields instead of sitting in a classroom is wonderful. For all those who are in between school and dropping out, go to CAS and it will change your life forever.”

City-as-School High School is the nation’s leading (引导) external (外部地) learning or experiential (来自经验的) learning model for high school students.

小题1:What can we learn about“City-as-School”?

A.It has no teachers.

B.It has no school buildings.

C.It has only girl students.

D.It is the only school in the city.小题2:What do students do in“City-as-School”most of the time?

A.They do whatever they like.

B.They learn Maths and Science.

C.They help with work in a certain area.

D.They learn all the college courses.小题3:According to the passage,“City-as–School” can help _________.

A.all the students go to college

B.students forget the duty of their work

C.students earn much money while studying

D.students learn a lot about different kinds of work小题4:What is the best title for the passage?

A.A New City

B.A New School

C.A New-type School

D.A Girl in New York

单项选择题