A:从城市迁往农村
B:规模小、频率低
C:从内地迁往边疆
D:流动人口大增
In a position like this, one can ________ stand up _______ lie down . So it is very uncomfortable.
如图所示,受精卵的基因组成是( )
Amy thinks moon cakes are too sweet. She __________ eats them.