脑筋急转弯 1．my uncle doesn't sleep for many days, but

1、my uncle dosen't sleep for many days,but he is not tired at all.what is his secret？
----------he sleeps at night 白天不睡晚上睡

2、What has a bed but never sleeps ,a month but never speaks?
---------river 河流

1是什么?
2.是river

river 河流
河流有河床 也有河口

river~
bed.指河床
mouth.指河口