【英语开放探究题1.Maryis12yearsold.two-查字典问答网
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  【英语开放探究题1.Maryis12yearsold.twoyearsago,shewastwiceasoldasherbrotherJack.HowoldisJacknow?HowoldwillMarybewhenJackistwicehispresentage?2.Peteris15yearsold.Threeyearsago,hisyoungersisterMichaellewasha】

  英语开放探究题

  1.Maryis12yearsold.twoyearsago,shewastwiceasoldasherbrotherJack.HowoldisJacknow?HowoldwillMarybewhenJackistwicehispresentage?

  2.Peteris15yearsold.Threeyearsago,hisyoungersisterMichaellewashalfPeter'sage.HowoldisMichaellenow?

  3.whyisroomfullofmarriedpeopleempty?

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2020-08-04 20:23
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  1.Maryis12yearsold.twoyearsago,shewastwiceasoldasherbrotherJack.HowoldisJacknow?(12-2)/2+2=7

  HowoldwillMarybewhenJackistwicehispresentage?7*2+5=19

  2.Peteris15yearsold.Threeyearsago,hisyoungersisterMichaellewashalfPeter'sage.HowoldisMichaellenow?

  (15-3)/2+3=9

  3.whyisroomfullofmarriedpeopleempty?

2020-08-04 20:27:31

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