70岁震颤麻痹患者最有效的治疗药物是
A．溴隐亭
B．金刚烷胺
C．复方左旋多巴
D．.丙炔苯丙胺
E．卡马西平
参考答案：C
The speaker walked out of the hall, __ happily with the teacher, and ___ by a group of students.
A．talking, followed
B．to talk, followed
C．talking, to be followed
D．to be talking, to followed
金融期权标的物的数量比金融期货标的物的数量（）。
A.相等
B.少
C.多
D.不定
