异烟肼主要的不良反应是( )
A.周围神经炎,四肢麻木
B.中枢抑制,嗜睡
C.骨髓抑制
D.第八对脑神经损害,耳聋
E.过敏反应
参考答案:A
—Have you ever been to Shanghai Expo Garden?
—No.It is the first time that I________to China.
A.come
B.have come
C.am coming
D.came