判断对错.
0.28:4=140:200.
若 ,且 ,则 是( )
青少年从小养成健康的生活习惯.下列各项中不属于健康生活习性的是( )
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.