A:in which
B:on which
C:which
D:whe
Hi, my name is Sue. I am .
“瑞金→遵义→泸定桥→懋功→吴起镇→会宁”反映的是下列哪一事件的行动路线图( )
48-24=____
99-66=____
46-24=____
64-23=____