T细胞分化成熟的场所是() A.骨髓 B.胸腺 C.腔上囊 D.淋巴结 E.脾 发布时间:2017-08-10 03:49 │ 来源:www.tikuol.com 题型:单项选择题 问题: T细胞分化成熟的场所是()A.骨髓B.胸腺C.腔上囊D.淋巴结E.脾
题型:单项选择题 Tom was badly injured in the accident last week. A new manager____ to take his place since then. A.has been arrangingB.has arrangedC.was arranged D.has been arranged 查看答案