行为危险因素监测资料用于A.了解行为危险因素流行情况 B.描述行为危险因素流行率的变 发布时间:2018-07-22 18:21 │ 来源:www.tikuol.com 题型:单项选择题 问题: 行为危险因素监测资料用于A.了解行为危险因素流行情况B.描述行为危险因素流行率的变化趋势C.指导制定干预计划D.评价干预效果E.以上都对
题型:单项选择题 By the end of last year they _____ thousands of orange trees on the mountains. [ ]A. had planted B. have planted C. were planting D. would plant 查看答案