A:31.4
B:109.9
C:62.8
某省(区)轮廓像一只可爱的玉兔(如图),其行政中心是( )
下列装置中,与发电机工作原理相同的是( )
He often_______up at 5:30, but he _______ up at 6:00 yesterday. ( )