T淋巴细胞分化成熟的部位在() A.外周免疫器官 B.淋巴结 C.骨髓 D.胸腺 E 发布时间:2017-06-13 09:18 │ 来源:www.tikuol.com 题型:单项选择题 B型题 问题: T淋巴细胞分化成熟的部位在()A.外周免疫器官B.淋巴结C.骨髓D.胸腺E.法氏囊
题型:单项选择题 B型题 Choose and correct the mistakes. 把错误的选项填在括号内并在横线上改正。( )1. Danny eat ice cream yesterday. A B C ( )2. I often talks to Miss Li. A B C ( )3. I cann't see a dog over there. A B C ( )4. This is for your. A B C ( )5. Danny jump on the train. A B C 查看答案
题型:单项选择题 B型题 Owing to ______ competition among the airlines, travel expenses have been reduced considerably.[ ]A. fierce B. strained C. eager D. critical 查看答案
题型:单项选择题 B型题 降雪对北京的蔬菜市场供应造成了一定程度的影响。据报道:菠菜、油菜、油麦菜等绿叶蔬菜的价格受降雪影响有较大幅度的上涨。蔬菜价格变化的主要原因是().A.价值决定价格B.供求关系的变化C.商品价值量的变化D.个别劳动时间的变化 查看答案