问题 更新时间2023/4/3 12:59:00 10[单选题,1.3分] Some studies confirmed that this kind of eye disease was __________ in tropical countries.A.perpetualB. prospectiveC.prevalentD.provocative 答案 登录 注册 参考答案:C 出自:联大 >> 河南大学-本科英语