人类B细胞分化成熟的场所是() A.胸腺 B.腔上囊 C.骨髓 D.法氏囊 E.腔上 发布时间:2017-05-03 12:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 人类B细胞分化成熟的场所是()A.胸腺B.腔上囊C.骨髓D.法氏囊E.腔上囊与骨髓
题型:单项选择题 Make sure you’ve got the passports and tickets and _________ before you leave.A.somethingB.anythingC.everythingD.nothing 查看答案