来自沈蔚杰的问题
Paper________aboutathousandyearsagobyCaiLun.A.wasinventedB.isinventedC.inventedD.hasinvented
Paper________aboutathousandyearsagobyCaiLun.
A.wasinvented
B.isinvented
C.invented
D.hasinvented
1回答
2020-12-27 04:48