被誉为“山西紫禁城”和“华夏第一宅”的王家大院,包含三大建筑群,共有大小院落123座,房屋1118间,面积共45000平方米。类似王家“以商贾兴”的商人群体的出现,是明清时期商业活动的一大特色。下列说法有误的是( )
A:明清时期晋商和徽商是最著名的商帮
B:商帮主要指相同行业商人结成的商人群体
C:商帮的出现与商品经济发展密不可分
D:商帮以会馆、公所为联络、计议之所
用所给词的适当形式填空
1. It's not easy for some students ____(get) to school.
2. Sometimes he gets up late, so he runs____ (quick) to school.
3 . Thanks for ____ (help) me so much.
4 . My uncle is sixty years old. It's his ____ (sixty) birthday today.
5 . Liu Lu ____ (cross) the river on a ropeway every day.
52-30=____