有关装作时间的表述方法,以下哪个是正确表述()
A.shipment on Dec.31rd,2020
B.shipment before the end of Dec.,2020
C.shipment on or before Jan.15th,2020
D.shipment during Nov./Dec.,2020
ABCD
解析:SHIPMENTBEFORETHENDOFDEC2020SHIPMENTONORBEFOREJAN15TH2020SHIPMENTDURINGNOV/DEC2020