一侧脊髓丘脑束的纤维来自于（）。
A.对侧脊神经节
B.同侧的楔束核
C.对侧后角细胞
D.同侧的后角细胞
参考答案：C
We didn't know you were in trouble at that time, otherwise we________ you a hand. [ ]
A. had given
B. gave
C. would give
D. would have given
0，1，4，9，16，( )
A．25
B．81
C．121
D．144
