泪膜的黏蛋白层( ) A.促进上皮增长 B.阻止泪液蒸发 C.为泪液的主要成分 D 发布时间:2017-07-17 01:31 │ 来源:www.tikuol.com 题型:单项选择题 问题: 泪膜的黏蛋白层( )A.促进上皮增长B.阻止泪液蒸发C.为泪液的主要成分D.降低表面张力E.以上都不是
题型:单项选择题 I sight of an empty seat at the back of the bus and went directly there. A. lost B caught C. looked D. took 查看答案