请选择CBA1D-s.v-P:W6U0t9dChinese people invented __________./U6R9q*]3_7y2q+[,q.}/](o
A. printing/U6R9q*]3_7y2q+[,q.}/](o
B. printed/U6R9q*]3_7y2q+[,q.}/](o
C. print/U6R9q*]3_7y2q+[,q.}/](o