锥体束病变可出现()
A.肌张力减弱
B.腱反射亢进
C.病理反射阳性
D.阵挛
E.脑膜刺激征
参考答案:B, C, D
There was no news;____, she did not give up hope.
A.moreover
B.therefore
C.but
D.nevertheless
简述作战理论发展经历了哪几个历史时期?