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Unit1HowlongistheGreatWall?大声读出出现的数字tentwentythirtyfortyfiftysixtyseventyeightyninetyonehundredtwohundredthreehundredfou

rthousandtwothousandthreethousandonethousandfivethousandsixthousandseventhousandeightthousandninethousa

ndWhatcanyousee?Icansee….1,0002,0003,00023,00010,0009,0008,00014,00055,000100,000onethousandtwothousandthreethousandtwenty-threethousandtenthousan

dninethousandeightthousandfourteenthousandfifty-fivethousandonehundredthousandWhatcanyouhear?1220501006080189912,00020,0005,

0001,00060,00080,00018,00099,000Readthetext,andanswer:HowlongistheGreatWall?It’sfivethousandkilometres.XiangtanChangshaHowlongisit?40kilometre

sIt’sfortykilometreslong.BeijingChangshaHowlongisit?It’s1,700kilometreslong.1,700kilometresBeijingShanghaiHowlongisit?It’s1,463kilomet

reslong.1,463kilometresShenzhenChangshaHowlongisit?It’s869kilometreslong.869kilometres量一量，比一比，说一说Howlongisyourdesk?I

t’s57centimetreslong.Howlongisyourruler?It’s…Howlongisyourpen?It’s…Howlongisyourpencil?It’s…HowoldistheGreatWall

?It’smorethantwothousandyearsold.Readandanswer.1.WheredoesSimonwanttogo?2.WhatisneartoDaming’shome?3.CantheywalkalloftheGreatW

all?4.Howoldisthemoon?Readandanswer.1.WheredoesSimonwanttogo?2.IsitneartoDaming’shome?SimonwantstogototheGreatWall.Yes,itis.3.Can

theywalkalloftheGreatWall?Why?4.Howoldisthemoon?No,theycan’t.Becauseit’stoolong.Itismillionsof(几百万)yearsold.