A:No, you’d better not
B:Not at all, anything you want
C:Thank you all the same
D:Yes, but not good
已知函数f(x)对任意x∈R都有fx+4-fx=2f2,若y=fx-1的图象关于直线x=1对称,且f(1)=2,则f(2011)=( )
Alex did the project on community service ______ better than his classmates.
人体成熟的血细胞中不具有细胞核的一组是( )