如图,点A、C、B在⊙O上,已知∠AOB =∠ACB =α.则α的值为( )
A:135°
B:120°
C:110°
D:100°
Yes. It's hard. ____
我国夏季气温最低的地区分布在( )
用方框中所给词或短语的适当形式填空
president,friendly,east,bore,comfortable,
go back,with,lots of,look forward to ,strict