可以由皮肤合成的维生素是()A.维生素E B.维生素A C.维生素D D.维生素C 发布时间:2018-06-04 14:26 │ 来源:www.tikuol.com 题型:单项选择题 问题: 可以由皮肤合成的维生素是()A.维生素EB.维生素AC.维生素DD.维生素CE.维生素B1
题型:单项选择题 A. Thank you B. It’s my pleasure C. By the way D. No, ofcoursenot E. NevermindA:Would you sign the register please,sir B:Sure. ______,does my room have a private bath A:Certainly. Every room in this hotel has a private bath. 查看答案