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>> 成人高等教育 / 经济数学基础
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佳题速递：
不存在传递函数依赖的范式至少要求是
A.4NF
B.5NF
C.6NF
D.BCNF
E.数据处理概论 判断以下句子时态的用法是否正确：Miss Wu teachs us English. 大学英语1 1972年，清政府派遣的首批留美幼童出发赴美学习，其中有后来成为中国著名的铁路工程师的（ ）。 中外教育史 把坚持党的领导、人民当家作主、依法治国有机统一起来是我国社会主义法治建设的一条基本经验。（ ）习近平法治思想概论 1[阅读题]
Linda Evans was my best friend—like the sister I never had. We did everything together: piano lessons, movies, swimming, horseback riding. When I was 13, my family moved away. Linda and I kept in touch through letters, and we saw each other on special time—like my wedding (婚礼) and Linda’s. Soon we were busy with children and moving to new homes, and we wrote less often. One day a card that I sent came back, stamped “Address (地址) Unknown. ” I had no idea how to find Linda. Over the years, I missed Linda very much. I wanted to share (分享) happiness of my children and then grandchildren. And I needed to share my sadness when my brother and then mother died. There was an empty place in my heart that only a friend like Linda could fill. One day I was reading a newspaper when I noticed a photo of a young woman who looked very much like Linda and whose last name was Wagman — Linda’s married name. “There must be thousands of Wagmans,” I thought, but J still wrote to her. She called as soon as she got my letter. “Mrs Tobin!” she said excitedly, “Linda Evans Wagman is my mother. ” Minutes later I heard a voice that I knew very much, even after 40 years, laughed and cried and caught up on each other’s lives. Now the empty place in my heart is filled. And there’s one thing that Linda and I know for sure: We won’t lose each other again!31. The writer went to piano lessons with Linda Evans ______. A. at the age of 13 B. before she got marriedC. after they moved to new homes D. before the writer’s family moved away32. They didn’t often write to each other because they _____. A. got married B. had little time to do soC. didn’t like writing letters D. could see each other on special time 33. There was an empty place in the writer’s heart be cause she_______. A. was in troubleB. didn’t know Linda’s addressC. received the card that she sentD. didn’t have a friend like Linda to share her happi ness or sadness34. The writer was happy when she ______. A. read the newspaper B. heard Linda’s voice on the phoneC. met a young woman who looked a lot like LindaD. wrote to the woman whose last name was Wagman35. They haven’t kept in touch ______. A. for about 40 years B. for about 27 yearsC. since they got married D. since the writer’s family moved away 英语 C(二) 5、
免疫细胞产生﹑发育﹑分化成熟的场所是( )。
A.骨髓
B.脾脏
C.胸腺
D.骨髓和胸腺医学免疫学
