某6个月女婴，母奶喂养未添加辅食，面色苍黄、嗜睡，诊断巨幼细胞性贫血，因缺乏A．蛋白 发布时间：2018-06-08 17:23 │ 来源：www.tikuol.com 题型：单项选择题 问题： 某6个月女婴，母奶喂养未添加辅食，面色苍黄、嗜睡，诊断巨幼细胞性贫血，因缺乏A．蛋白质B．铁C．维生素AD．维生素B2E．维生素B12
题型：单项选择题 完形填空。 Hello! I'm Zhang Heping. Zhang is my 1 name. Heping is my 2 name. I'm a 3 boy. I'm 11 4 . My English 5 is Paul. I'm 6 Class One, Grade Seven. Oh. I find 7 eraser in my classroom. It's 8 . Now it is in the lost 9 found case. You can 10 658-6535. ( )1. A. first ( )2. A. last ( )3. A. Chinese( )4. A. year old ( )5. A. name ( )6. A. on ( )7. A. the ( )8. A. white ( )9. A. but ( )10. A. meet B. family B. two B. English B. years old B. color B. at B. an B. fine B. with B. call C. one C. first C. America C. old years C. phone C. for C. a C. your C. and C. spell D. middle D. too D. China D. old year D. book D. in D. / D. my D. of D. look 查看答案
题型：单项选择题 (38)～(40)题，均基于“学生-选课-课程”数据库中的3个关系： S(S#, SNAME, SEX, DEPARTMENT)，主码是S# C(C#, CNAME, TEACHER)，主码是C# SC(S#，C#, GRADE)，主码是(S#，C#)为了提高特定查询的速度，对SC关系创建唯一索引，应该创建在( )属性上。A．(S#，C#)B．(S#, GRADE)C．(C#, GRADE)D．GRADE 查看答案