— Is _______ possible that everyone likes the same clothes?
— No, I don't think so.
A:this
B:that
C:it
D:what
如图,已知正方体ABCD﹣A1B1C1D1的棱长为2,点E为棱AB的中点.
求:(1)点C到面BC1D的距离;
(2)D1E与平面BC1D所成角的正弦值.
读我国四大地理区域图及甲、乙两幅景观图,完成下列问题.