物体从离地45m的高处作自由落体运动(g取10m/s2).求
下列有关我国各民族的地区分布状况的描述,正确的是( )
下列不属于农业用地的是( )
- I really want to join the square dance. Can I learn the dance well?
- Yes, Mom! Nothing is impossible ______ you put your heart into it!