我国老百姓的主食一般呈现出“北麦南稻”的格局,但在魏晋南北朝时,南方老百姓的餐桌上除了稻米之外,还有各类北方面食。出现这种现象的主要原因是( )
A:面食的营养价值高
B:民族融合的影响
C:南方商品经济的发展
D:南方人口增多
--_____________. That’s what friends are for.
On Sunday morning. The sun is shining. We have no classes. We are playing in the park. Some girls are singing and dancing under a big tree. Some boys are climbing the hill. Tom is drawing near the lake. Mike and John are swimming in the lake. Where are Betty and Mary? They are sitting under a small tree. They are reading a book. We are very happy.