43. 19 44. 8 45. (或()n) 【查看更多】

 

题目列表(包括答案和解析)

有四名同学从编号1~50的总体中抽取8个个体组成了一个样本,他们选择的样本中个体编号分别为:
①5,10,15,20,25,30,35,40.  
②43,44,45,46,47,48,49,50.
③1,3,5,7,9,11,13,15,17. 
④43,25,2,17,35,9,24,19
你认为样本(  )较具有随机性.

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20、在第十四届亚运会上,前八名国家或地区的获奖情况如下表:
国家(或地区) 金牌 银牌 铜牌 奖牌总数
中国 150 84 74 308
韩国 96 80 84 260
日本 44 73 72 189
哈萨克斯坦 20 26 30 76
乌兹别克斯坦 15 12 24 51
泰国 14 19 10 43
印度 11 12 13 36
中国台北 10 17 25 52
如果想将以上获奖情况用统计表来表示,你认为不宜使用的是(  )

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Dear Benter,
  You have been away exactly two weeks today but it seems more like two years to me!
  I’m glad to hear you’ll be back soon. Are you coming directly home, dear? Or do you plan to make some stops   36  the way? I hope you’ll be home in  37 for Patsy’s birthday next Sunday. She is  38 you to show films to her  39 friends.
Patsy keeps asking every day  40 you’ll be back. She says you never  41  that story you were telling her about  42 train that lost its “ toot”(喇叭嘟嘟声). You’d better   43  and think up a good ending  44 it. You know how Patsy is? She  45 be happy until she knows exactly what ­__46  to the “toot” and  47 the little train got it back  48 !
  Everything at home is fine except that we  49 you so much! I’ve been  50 with the spring cleaning. Yesterday I had Cora  51 in to wash the kitchen walls and she did a very good __52 of it. The kitchen looks as though it’s been repainted. I made some new yellow curtains, and they  53 very beautiful.
  I went to see your mother yesterday. Her  54 is all gone and she looks very  55 . Your sister Jean looks wonderful! She has taken off about fifteen pounds since she began dieting. But now she’s complaining that none of her clothes fit!
Hope to see you before next Sunday.
  Love and kisses to you!
                      Yours
                            Lynn
【小题1】A in           B. on          C. at          D. along
【小题2】
A.timeB.factC.allD.the end
【小题3】
A.expecting B.thinkingC.agreeingD.hoping
【小题4】
A.smallB.shortC.littleD.low
【小题5】
A.thatB.whenC.whyD.unless
【小题6】
A.finishedB.stoppedC.suppliedD.included
【小题7】
A.someB.aC.theD.this
【小题8】
A.careB.arriveC.pretendD.hurry
【小题9】
A.onB.forC.atD.in
【小题10】
A.mustn’tB.couldn’tC.won’tD.shouldn’t
【小题11】
A.affectedB.aboutC.happenedD.was
【小题12】
A.howB.howeverC.becauseD.why
【小题13】
A.yetB.tooC.againD.next
【小题14】
A.loveB.thinkC.missD.care
【小题15】
A.workingB.readyC.togetherD.busy
【小题16】
A.stayB.comeC.visitD.drop
【小题17】
A.workB.jobC.thingD.clean
【小题18】
A.showB.feelC.becomeD.look
【小题19】
A.coldB.heatC.healthD.medicine
【小题20】
A.goodB.wellC.niceD.best

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有四名同学从编号1~50的总体中抽取8个个体组成了一个样本,他们选择的样本中个体编号分别为:
①5,10,15,20,25,30,35,40.  
②43,44,45,46,47,48,49,50.
③1,3,5,7,9,11,13,15,17. 
④43,25,2,17,35,9,24,19
你认为样本(  )较具有随机性.
A.④B.③C.②D.①

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大于1的正整数m的三次幂可“分裂”成若干个连续奇数的和,如23=3+5,33=7+9+11,43=13+15+17+19,…若m3分裂后,其中有一个奇数是2013,则m的值是(  )

 

A.

43

B.

44

C.

45

D.

46

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