王老师:19139051760(拨打)复制微信 题目 更新时间:2023/4/3 45[单选题,1.3分] The concentration of populations in cities has given ______ to many problems of housing, education, and medical services.A. riseB.reasonC. resultD.response 答案 登录 注册 参考答案:A 出自:联大 >> 河南大学-本科英语 河南大学继续教育学院