A:重力、动力、分子力
B:重力、弹力、摩擦力
C:电场力、磁力、浮力
D:压力、拉力、阻力
根据语境和所给首字母完成单词。
Are you busy a____ school? Can you s____ English? Then we n____ you to help w____ sports f____ English-s____ students. It is r____ and easy! Please c____ to the Students' sports c____. C____ Mrs Miller at 6753846.
有比例尺为①1:1000 000②1:100 000③1:1000图幅相同的三幅地图,据此判断下列说法正确的是( )