--- My mother has a cold today, and I have to take care of her.

---            .

A．Thank you

B．Oh, I don’t know

C．I’m sorry to hear that

D．That’s Ok.

仰胸挺肚试验阳性提示（）。

A.先天性髋关节脱位

B.骶髂关节病变

C.腰椎间盘突出症

D.梨状肌综合征

E.交叉韧带病