I hear someone at the door. Please go and see who is. A.knock,it B.knocking , it C.knocking, he D.knock, he 查看更多

 

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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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There are nineteen boys and twenty-eight girls in our class.  1  the boys is English. His 2 is Sam. He is thirteen. Two of the  3  are American. They are twins. 4 names are Lucy and Jane. They are twelve. They are my  5 . All of the other boys and girls are  6  . We all like the English boy and the American girls,  7  they like us, too. We play games together(一起). We help  8  and they help us.
  Look, there   9  the twins! They are coming this way.  Let's 10  hello to them.
【小题1】
A.One ofB.Two ofC.Three ofD.Four of
【小题2】 
A.schoolB.sisterC.brotherD.name
【小题3】
A.brothersB.sistersC.girlsD.boys
【小题4】 
A.YourB.TheirC.Our  D.Her
【小题5】 
A.teachersB.friendsC.brothersD.students
【小题6】
A.ChineseB.EnglishC.AmericanD.friends
【小题7】 
A.butB.orC.andD.so
【小题8】 
A.herB.themC.himD.you
【小题9】
A.isB.comeC.goD.work
【小题10】 
A.speakB.tellC.sayD.talk

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数学的美学无处不在,数学家们研究发现,弹拨琴弦发出声音的音调高低取决于弦的长度,绷得一样紧的几根弦,如果长度的比能够表示成整数的比,发出的声音就比较和谐.例如,三根弦长度之比是15:12:10,把它们绷得一样紧,用同样的力弹拨,它们将分别发出调和的乐声do、mi、so.研究15、12、10这三个数的倒数发现:.我们称15、12、10这三个数为一组调和数.现有一组调和数:x、6、4(x>6),则x的值是  

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在半径为27m的圆形广场中心点O的上空安装了一个照明光源S,S射向地面的光束呈圆锥形,其轴截面SAB的顶角为120°(如图),则光源离地面的垂直高度SO为

[  ]

A.54m
B.
C.
D.m

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在半径为27 m的广场中央,点O的上空安装了一个照明光源S,S射向地面的光束呈圆锥形,其轴截面SAB的顶角为120°(如图24-4-2-5),求光源离地面的垂直高度SO.(精确到0.1 m;=1.414,=1.732,=2.236,以上数据供参考)

   图24-4-2-5

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