. If you can’t release your unpleasant past, you may create a vicious cycle(恶性循环)      negative influence and feelings are reinforced(加强 ).

A．which

B．that

C．when

D．where

引起前庭障碍性呕吐的疾病是（）

A.癔症

B.脑震荡

C.美尼尔病

D.颅内血肿

E.胃神经官能症