颈椎病的类型包括（）
A.颈型
B.神经根型
C.脊髓型
D.椎动脉型
E.交感神经型
参考答案：A, B, C, D, E
There is a real possibility that these animals could be frightened, ______ a sudden loud noise. [ ]
A. should there be
B. being there
C. there was
D. there having been
预算
