如要设定学生年龄有效性规则在18至20岁之间，当输入的数值不在此范围内，则给出错误信 发布时间：2017-06-01 08:06 │ 来源：www.tikuol.com 题型：单项选择题 问题： 如要设定学生年龄有效性规则在18至20岁之间，当输入的数值不在此范围内，则给出错误信息，我们必须定义A．实体完整性B．域完整性C．参照完整性D．以上各项都需要定义
题型：单项选择题 完形填空 Meimei is a middle school student. She likes English very much. And she 1 it. She often tells her parents 2 herEnglish study. Now she 3 her mother about her English study again. Meimei says, "Look, Mum, this is our new English book. There 4 a lot of interesting stories in it. ""Mm, not bad.Do you only 5 in class, or does your teacher explain(解释) everything to you in Chinese? " "Oh, no. We speak English for most of the time in class. Our teacher 6 us only in English. Sometimes 7 not easy for us to understand her, but she says that listening and speaking help us very much. " "I think she is right. Does she speak English very slowly? " "Not always. Sometimes we 8 . Then she says is again." "Is it interesting to study English? " "Yes, 9 . And I'm going to work harder at it in the new school year. I'm going to do my best(尽最大努力)." "That's good. I'm 10 you'll study better."( )1. A. good at ( )2. A. with ( )3. A. talks with ( )4. A. is ( )5. A. say English ( )6. A. speaks ( )7. A. we're ( )8. A. not understand her( )9. A. it is ( )10.A. thinkB. is good at B. to B. talks to B. are B. tell English B. speaks to B. they're B. don't understand herB. it do B. knowC. well in C. about C. is talking C. have C. talk English C. tells C. it's C. not understand himC. it isn't C. sureD. is well in D. on D. is talking with D. has D. speak English D. tells to D. this is D. don't understand himD. it doesn't D. want 查看答案
题型：单项选择题 某居民转让自有住房取得收入30万元，转让中交纳各种税费1.6万元，支付中间 人费用0.4万元，税务机关核定房产原值为18万元，该居民应纳个人所得税为( )万元。A．2B．3C．4D．5 查看答案
题型：单项选择题 补写出下列名篇名句中的空缺部分。（任选三小题作答）（6分）（1）故不积跬步， ；不积小流，无以成江海。山回路转不见君， 。（岑参《白雪歌送武判官归京》）（2）蟹六跪而二螯， ，用心躁也。 君子食无求饱，居无求安， ，就有道而正焉。《论语.学而》）（3） ，知来者之可追。 ，惑之不解，或师焉，或不焉，小学而大遗，吾未见其明也。 （4）是故无贵无贱，无长无少，道之所存， 。 聊乘化以归尽， 。 查看答案