多媒体数据库管理系统是重要的对多媒体数据进行管理的软件。人们通常把多媒体数据库管理系 发布时间：2017-07-23 08:10 │ 来源：www.tikuol.com 题型：填空题 问题： 多媒体数据库管理系统是重要的对多媒体数据进行管理的软件。人们通常把多媒体数据库管理系统的体系结构归纳为三种：单一DBMS(集中式)结构、 【1】 和协同DBMS(联邦式)结构。
题型：填空题 完形填空。 It's four o'clock in the afternoon. It's time l______. But we 2______ our classroom. There 3______ seven students in our team (组). Now, there are only five. I say to Bill, come and clean (弄干净) 4______ classroom. Look! Jane and Tom 5______ the chairs and desks. One of us 6______ carrying water. Lily, Lucy and I are cleaning the floor. What is Jim 7______? We 8______ him in the classroom. 9______ is he? Do you 10______?( ) 1. A. to go home( ) 2. A. clean ( ) 3. A. is ( ) 4. A. our ( ) 5. A. is putting ( ) 6. A. am ( ) 7. A. saying ( ) 8. A. can see ( ) 9. A. What ( ) 10. A. know B. go home B. cleans B. have B. you B. are puting B. is B. having B. find B. Who B. go C. go to home C. must clean C. has C. your C. putting C. are C. doing C. can't find C. When C. like D. goes to home D. cleaning D. are D. us D. are putting D. be D. do D. aren't see D. Where D. look 查看答案