原发刺激反应性接触性皮炎的特点是()A.少数人接触后发病 B.有明显的潜伏期 C.皮 发布时间:2017-07-17 21:21 │ 来源:www.tikuol.com 题型:单项选择题 问题: 原发刺激反应性接触性皮炎的特点是()A.少数人接触后发病B.有明显的潜伏期C.皮损局限于接触部位D.皮肤斑贴试验阳性
题型:单项选择题 The formula i+1 put forward by Krashen means input that contains structures ______ the learner's present level.A. greatly above B. greatly belowC. somewhat above D. somewhat below 查看答案