吉兰-巴雷综合征经典的病理改变是()
A.华勒变性
B.轴突变性
C.节段性脱髓鞘
D.血管炎
E.嵌压性神经病
参考答案:C
145. The nation was reunited and the slaves were ______ when the North won the Civil War in American history.
A.escaped
B.set free
C.set freedom
D.set out
中医学最古老、最完整的典籍是公元前3世纪左右成书的()。