—How long have you ___________? —Two years.
A:got married
B:married
C:be married
D:been married
我国陆地面积在世界各国中,仅次于( )。
口算我能行.
10×6=____
2×30=____
4×21=____
3×23=____
把图3中各电路元件接成串联电路.