HP4100手送纸打印正常，用下纸盒打印时不上纸，故障原因出在（）
A.下搓纸轮
B.下分页器
C.定影组件
D.上搓纸轮
参考答案：A
My classmate Lily is in English because she once stayed in the U.S. for several years.
A．loose
B．active
C．fluent
D．good
古登堡面
