问题 单项选择题

下列实体的联系中,属于多对多联系的是______。

A.学生与课程

B.学校与校长

C.住院的病人与病床

D.职工与工资

答案

参考答案:A

解析:知识点;实体之间的联系评析;实体之间的联系有三种:一对多、多对多、一对一。在Access中,多对多的联系表现为一个表中的多条记录在相关表中同样可以有多条记录与之对应。A选项中,一个学生可以学多门课程,同样,每门课程也可以被多名学生选修。

阅读理解

阅读理解。

     Jimmy lives in the country(乡村), and he loves playing in the river near his house, but his father gets a job in a big city(城市), and he moves there with his family.

     Their new house has a garden, but the garden is very small. Jimmy isn’t happy. “Is there a river near

here?” He’s asking his mother in the first morning. His mother is answering, “No, there isn’t, but there’s a

nice park near here, and there’s a pool(池塘)in it. We’re going there this afternoon.” Jimmy is happy

now.

     After lunch, Jimmy and his mother go to the park. Jimmy wants to walk near the pool, but there is a

sign(牌子)beside it. His mother reads it to him, “Warning(注意):This pool is dangerous.367 people have fallen into it(已掉进池塘).”Jimmy looks into the pool carefully. And he says, “But I can’t see

them.”

1. There is____ near Jimmy’s old house.

A. a sign

B. a garden

C. a river

D. a park

2. Jimmy moves to a big city because ______.

A. he likes the big city

B. their new house in the big city has a nice garden

C. there is a pool in the garden

D. his father gets a job in the big city

3. Jimmy becomes happy because______.

A. he’s going to the park with a pool in it

B. he’s going to play in the river

C. he’s going to see their nice garden

D. he’s going to play with some new friends

4. The sign tells people_______.

A. the water in the pool is dirty(脏)

B. not to look at the pool

C. to jump into the pool

D. not to walk near the pool

5. Which is wrong?

A. Jimmy’s father has a new job

B. Jimmy likes the river

C. 367 people has fallen into the pool

D. Jimmy can’t see the people in the pool, because something is wrong with his eyes

单项选择题