回忆1：
小作文，A类，比较2个community centers 的floorprint
大作文，nowadays it is more convenient and easier for people to travel to other countries, is it development a positive or negative effect ?
回忆2：
小作文：地图，2个community centers变迁比较。
大作文：Nowadays， it is more convenient and easier for people to travel to other countries.Is this a positive or negative development ?