（）共同构成了税款征收的基本环节。
A.申报纳税
B.优化服务
C.集中征收
D.强化管理
参考答案：A, B
In no city of China _____ little about the economic development．
A．the government cares
B．does the government care
C．doesn’t the government care
D．the government doesn’t care
震颤麻痹患者走路姿势呈
A.跨阈步态
B.慌张步态
C.共济失调步态
D.醉汉步态
E.间歇性跛行
