卷烟、雪茄烟的生产主要分为制丝和( )两个环节。
A．打码
B．卷接包
C．发货
D．运输
参考答案：B
My brother______ a computer. [ ]
A. have
B. has
C. doesn't has
D. don't have
请画出减二线（减二中）原则流程。
