A:是以政府强制力为后盾的
B:直接关系着市场主体的利益
C:能够弥补市场经济的缺陷
D:能够熨平经济发展中的波动
若﹣x2yn与3yx2是同类项,则n的值是( )
They had a difficult time _______ in the village at first, but soon they got over it.