- Does Kitty play chess on Thursday evening? -
A:No, she isn't.
B:Yes, she does.
C:Yes, I am.
设函数fx=log2x,x>2-x2+a,x≤2的值域为R,则常数a的取值范围是( )
扩句
①我家有园子。
②祖父在院子里。
45×12= ____
45×3= ____
45×0= ____
45×1= ____
0×45= ____
0×3= ____