The children start early in the morning ________ get to school on time because their school is far from their homes.
A:in order
B:in order to
C:in order that
D:so that
xiá
bǐ
yí
guì
海____
____岸
____植
____花
xí jī
kōng kuàng
huái bào
bāo
____
同____
在△ABC中,若a2-b2=3bc且cb=23,则角A=( )