问题 更新时间2023/4/3 12:59:00 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
问题 更新时间2023/4/3 12:59:00
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