- Why are you feeling sleepy all the time?
- Because I late watching the film Kung Fu PandaⅢlast night.
A:stayed up
B:cheered up
C:gave up
D:took up
将点燃的蜡烛放在凸透镜前25cm处,在距凸透镜50cm处的光屏上成了一个清晰的像,则在光屏上所得的像是()
“一只手,提个篮;两只手,端个盘;十只手,推动船;百只手,把河拦;千只手,推到山。“这首外国谚语说明( )
太阳直射南回归线的这一天,是北半球的( )