具有J链的Ig是() A.IgG1 B.IgG4 C.sIgA D.IgE E.Ig 发布时间:2017-06-04 07:06 │ 来源:www.tikuol.com 题型:单项选择题 A1/A2型题 问题: 具有J链的Ig是()A.IgG1B.IgG4C.sIgAD.IgEE.IgD
题型:单项选择题 A1/A2型题 She was surprised to find the fridge empty; the child everything . [ ]A. had been eating B. had eaten C. have eaten D. have been eating 查看答案