A:Turning
B: To tur
C:Turned
D: Tur
这个图形有____条对称轴.
宪法是依法治国的根本依据。依宪治国,首先是依法治国。( )
It's good for people to walk more and drive less. So I'd rather _______ half an hour's walk to work.
读某年春季我国北方地区沙尘暴发生次数图,回答题。