A:his dream was realized
B:his dream came true
C:he came true his dream
D:he realized his dream
图上都有谁?他们在干什么?会说些什么……发挥想象写一写。
读我国四大地理区域图,回答下列问题。
如图1是边长为1的六个小正方形组成的图形,它可以围成图2的正方体,则图1中小正方形顶点A,B围成的正方体上的距离是____
已知函数fx=12x-cosx,则方程fx=π4所有根的和为( )