税源管理通过信息化实现纳税人动态资料的（）存储管理。
A.一户式
B.多户式
C.重点户式
D.单户式
参考答案：A
—How many English words do you think I should know?
—As many as you ______. Then you will find reading quite easy.
A．will
B．must
C．can
D．might
淀粉在足量的清水中可以形成淀粉糊化。( )
