He is Daming.He is a Chinese boy.He likes music.He can play the piano and he likes singing.He often goes to concerts and he usually buys CDs by his favourite singers.He watches TV plays on the television,but he never go to the cinema .He reads novels in elevning and he goes to bed at about ten o'clock.
数学：
1.不会o(∩_∩)o...
2.某人下午6点多钟外出时,手表上分针,时针的夹角恰好是120度,下午7点回家时,发现两针夹角仍为120度,请问他外出多长时间?
6点10出发到7点回家50分钟
2又3/8度等于多少分?等于多少秒?
2*60+3*60/8=142.5分=142.5*60=8550秒
求度.结果一定要是小数吗?如果用分数表示可不
可以.