Mary _____ up yet because she _____ to bed very late last night.

A．didn’t get; went

B．doesn’t get; has gone

C．hasn’t got; has gone

D．hasn’t got; went

下列不是发育性髋关节发育不良的体征是（）。

A.蛙式试验阳性

B.艾里征阳性

C.欧特拉尼征阳性

D.套叠试验阳性

E.艾里征阴性