根据我国法律规定，以下（）所使用的商标实行强制注册。
A.兽药
B.食品
C.人用药品
D.有包装的烟丝
参考答案：C, D
—Does Bill do his new job well?
—____ his old job. I’m afraid there’s no hope for him.
A．No better than
B．Not better than
C．Not so well as
D．Not as well as
亚急性重型肝炎（）
A．肝细胞桥接坏死
B．肝细胞结节状再生
C．两者皆有
D．两者皆无
