题目

With two children _____ middle school in the nearby town now, the parents are working hard. A . to attend B . attending C . attended D . having attended 答案：B近代中国经济结构中，产生了—些新的因素，其出现的先后顺序是 A．官营洋务资本外国资本民族资本 B．民族资本官营洋务资本外国资本C．外国资本官营洋务资本民族资本 D．外国资本民族资本官营洋务资本