A:wait
B:am waiting
C:am going to wait
D:will be waiting
qīng wā
yīng gāi
bān jiā
cǎo zǐ
pò kāi
quán shuǐ
____
如图,在菱形ABCD中,点P是对角线BD上一点,PE⊥AB于点E,PE=3,则点P到BC的距离等于____