问题
单项选择题
A．关系实现
B．属性实现
C．关系或一个属性实现
D．关系和一个属性实现
答案
参考答案：A
解析：实体间是多对多的联系时，则可以增加一个关系。答案为A。
搜题请搜索小程序“爱下问搜题”
A．关系实现
B．属性实现
C．关系或一个属性实现
D．关系和一个属性实现
参考答案：A
解析：实体间是多对多的联系时，则可以增加一个关系。答案为A。
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| My friend Bill is fourteen years old. He really likes 1 very much. In his bedroom there are many movie 2 on the wall. His 3 actor is Jackie Chan. He likes Chinese action movies. He thinks they are 4 . He also likes 5 . He thinks they are scary, but they are 6 . 7 interesting thing: He is American, but he likes 8 . He often goes to see Beijing Opera 9 his father on weekends. 10 father likes it, too! | ||||
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