They can't buy anything because _________ of the shops are open now
A:all
B:some
C:any
D:none
亚里士多德说:“不能认为每一位公民属于他自己,而要认为所有公民都属于城邦。”这句话说公民
已知-π2<α<0,则点Psinα,cosα位于( )