维生紊D缺乏性手足搐搦的临床表现，下列答案中错误的是
A．喉痉挛
B．手足搐搦
C．膝反射
D．面神经征
E．惊厥
参考答案：C
— I’ll return the book to Mary, but I can’t find her anywhere.
—She ______ the teacher’s office. You can find her there.
A．has left
B．was away
C．has gone to
D．has been to
怎样知道你的膜系统该用何种清洗方法进行清洗？
