偏身感觉障碍常有（）
A.一侧大脑半球病变
B.脊髓病变
C.一侧内囊病变
D.周围神经病变
E.小脑病变
参考答案：A, C
对于给定的靶原子，各线系的最低激发电压最大的是（）.
A.K层
B.L层
C.M层
D.N层
E.O层
It was now clear that no such weapons were manufactured and none been found. ()
A. was found
B. were founded
C. has been found
D. have been founded
