在网状型数据库中,系主和成员之间的联系是【】的联系。
时间:2021-03-25
人气:0
【】的独立性和数据冗余直接影响数据的存取效率,影响网站的运行速度
()Let’s see animals in the zoo this weekend
时间:2021-03-23
How much did you pay ()your new dress?
The apples are very cheap. I ’ll ()some.
Don ’t swim in the river. It ’s too()
()this pair of shoes?
They are gonging to ()a new school for the poor students
The have() food at home
Your idea a ()good one.