【简答题】实体-联系模型()是由P.P.Chen于()年首先提出的。
【单选题】下列关于E-R图的表述中,错误的是( )。
【单选题】.Either Joe or Rose was the last to leave the lab yesterday.But I’m not sure_________.
【简答题】实体-联系模型()是由P.P.Chen于()年首先提出的。
【单选题】听力原文:W: I can buy some magazines still, right, dear? M: The train is about to leave. What does the man mean?
A.
The woman can read the magazine on the train.
B.
The woman should not board the train.
C.
There is no time to buy a magazine.
D.
They have to pay for the magazine.