对资料平均水平描述的指标有（）。 A.率 B.变异系数 C.中位数 D.构成比 E. 发布时间：2017-06-09 01:30 │ 来源：www.tikuol.com 题型：单项选择题 问题： 对资料平均水平描述的指标有（）。A.率B.变异系数C.中位数D.构成比E.动态数列
题型：单项选择题 从上下连贯的要求看，下面句子的横线上应填入的一项是 [ ] 周末，我最喜欢逛热闹的“花鸟市场”，这里简直是动植物的世界：有色彩斑斓的金鱼，_________________。 A．有欢快歌唱的小鸟，有鲜花散发着的阵阵清香。 B．有鲜花在散发着阵阵清香，有小鸟在欢快地歌唱。 C．有散发着阵阵清香的鲜花，有小鸟在欢快地歌唱。 D．有欢快歌唱的小鸟，有散发着阵阵清香的鲜花。 查看答案
题型：单项选择题 完形填空 When your kids were six or seven, you sent them to school.Did you ever wonder what goes through a teacher's_1_as he or she tries to teach your kids?Did you ever wonder what the teacher 3 from you, the parents? Parents can be_3_or suspicious.They can be of great help to the teacher_4_ be in need of help themselves.Some teachers think parents are too 5 on their children.Here is 6 one teacher puts it. "I usually have the 7 of parents coming in and 8 me how much they care about the kids'education and how they really 9 their kids.They tell me they stand and 10 them closely when they do their homework.Sometimes they 11 offer help with the kids'lessons as if they were teachers.They check their school work, and are too sensitive to 12 . They blame the kids on everything having to do 13 school.When a parent asks me how his or her kid is getting on in my class, my answer usually is"Well, you know, he is__14_ a good kid.He is fine in my class.Maybe you don't have to be so 15 with your kid." Teachers want parents to know that they are professionals at 16 with children.They have 17 many children and even parents.Because of this, teachers can be 18 at educating children.Teachers are 19 that parents want their children to do well, but they know more about what children should be able to do at different ages and 20 .( ) 1. A. heart ( ) 2. A. reflects ( ) 3. A. effective ( ) 4. A. but ( ) 5. A. hard ( ) 6. A. where ( ) 7. A. problems ( ) 8. A. advising ( ) 9. A. help with ( ) 10. A. connect ( ) 11. A. even ( ) 12. A. marks ( ) 13. A. at ( ) 14. A. nearly ( ) 15. A. satisfied ( ) 16. A. working ( ) 17. A. fed ( ) 18. A. pleased ( ) 19. A. content ( ) 20. A. stages B. mind B. results B. attentive B. or B. keen B. how B. contracts B. examining B. deal with B. guide B. already B. efforts B. beyond B. really B. careful B. playing B. observed B. worried B. doubtful B. classes C. soul C. benefits C. supportive C. thus C. dependent C. when C. accidents C. telling C. make up C. watch C. still C. pains C. in C. seldom C. strict C. staying C. attended C. disappointed C. aware C. schools D. spirit D. expects D. positive D. as D. crazy D. why D. agreements D. instructing D. give up D. inspire D. merely D. words D. with D. hardly D. cautious D. joking D. greeted D. experienced D. suspicious D. projects 查看答案