A:a是细胞分裂过程
B:b是细胞分化过程
C:甲属于器官
D:乙属于系统
We can't in the park on rainy days.
一 Who helped you clean the classroom yesterday?
— ________. I did it all by myself.
将函数y=sin(2x+π4)的图象向左平移π4个单位,再向上平移2个单位,则所得图象的函数解析式是( )