下列对于一个“不好”的关系模式中会存在的问题的叙述不正确的是A．数据冗余 B．更新异
题型：单项选择题
问题：
下列对于一个“不好”的关系模式中会存在的问题的叙述不正确的是
A．数据冗余
B．更新异常
C．查询异常
D．插入异常
题型：单项选择题
| 完形填空。 | |||
| Once, in a small village, lived a family with eight children. Two of the children loved 1 very much, but the family was so poor that it was impossible to send 2 of them to study at the art college at the same time. After many discussions, the two boys finally 3 a plan. They would toss(抛) a coin. The loser would go 4 into the mines (煤矿) and, with his earnings(赚得的钱), 5 his brother studying at the college. Then, when the brother who won the toss finished his studies, after four years, he would support the other brother studying at the 6 all his heart and his paintings were much 7 than those of most of his teachers, and by the time he 8 , he was beginning to make a lot of money for his paintings. 9 James returned, the family held a big dinner for his great success. Soon after the meal began, James 10 up from his seat to drink a toast (举杯祝酒) to his dear 11 He said, "Jack, now you can go to the art college and your 12 will come true. I will take care of you. " But Jack said 13 , "Brother, the four years in the mines has done too much to my hands, so it' s too 14 Now I can' t even hold a glass. " To show his great love and respect, James drew his brother' s hands with 15 towards the sky. He called his drawing "The Praying Hands", which became very famous years later.  | |||
| ( )1. A. painting ( )2. A. any ( )3. A. looked out ( )4. A. off ( )5. A. support ( )6. A. home ( )7. A. better ( )8. A. arrived ( )9. A. Before ( )10. A. picked ( )11. A. brother ( )12. A. way ( )13. A. happily ( )14. A. early ( )15. A. legs | B. books B. all B. worked out B. away B. agree B. mine B. worse B. graduated B. When B. turned B. sister B. idea B. surprisedly B. late B. feet | C. school C. both C. took out C. up C. follow C. college C. cheaper C. walked C. Though C. looked C. father C. dream C. angrily C. good C. arms | D. money D. neither D. got out D. down D. let D. school D, older D. waited D. While D. stood D. mother D. practice D. softly D. helpful D. fingers |