1书上有 2In the 1960s,the living conditions in the city were poor 3China has developed rapidly since the reform and opening-up 4It is important to remember the past,live in the present and dream about the future 不知你们那边有卖仁爱版的教材讲解么?这本书蛮不错的,而且每个话题的作业上面都有答案
