前置胎盘附着于（）.
A.子宫体前壁
B.子宫体后壁
C.子宫体侧壁
D.子宫体底部
E.子宫颈内口
参考答案：E
The book, ____ are true stories about great scientists of the 20th century, is well worth reading.
A．which
B．what
C．in which
D．of which
造成足下垂的单一周围神经损害是()
A．胫神经
B．股外侧皮神经
C．腓神经
D．股神经
E．隐神经
