I’mtenyearsoldandmysisteristwoyearsolderthanme，sosheist_____yearsold。
在中国政区图上，量得北京至台北的直线距离为5.15厘米，两地实际距离为1802.5公里，这幅地图的比例尺是()
因为人类活动引起的环境问题是()
黄河干流上将在防洪、减淤方面发挥重要作用的水利枢纽工程是()
()1.Couldyouhelpme，please?A.OK.
()2.Thanksalot.B.You'rewelcome.
()3.Let'sputthebooksinthebox.C.It'sMonday.
()4.Canyoucarryit?D.No，it'sfull.
()5.Who'sondutytoday?E.lam.
()6.Isitempty?F.No，it'slight.
()7.Whatdayisittoday?G.Certainly.
()8.Isthatbagheavy?H.No.LiLeiisn'there..
()9.Areweallheretoday?I.No，thanks.
()10.Letmehelpyou.J.Yes，Ican.
