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阅读理解。Duringthedayweworkandplay,andatnightwesleep.Ourbodyrestswhenwesleep.Inthemorningwearereadytoworkandplayagain.Ourbodygrowsmostwhenweareasleep.Childrenwhoaretiredusuallyneedsleep.We
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阅读理解。
     Duringthedayweworkandplay,andatnightwesleep.Ourbodyrestswhenwesleep.Inthemorningwearereadytoworkandplayagain.Ourbodygrowsmostwhenweareasleep.Childrenwhoaretired
usuallyneedsleep.Wecangetbetteratourlessonsafterhavingplentyofrest.Boysandgirlswhoare
eightornineyearsoldneedtenhoursofsleepeverynight.Ourbodyneedsplentyofairwhenweare
asleep.Ifwedonotgetenoughfreshair,wewillfeeltiredwhenwewakeup.Whileinbedwemustnot
cover(覆盖)ourhead,ourlungsneedtogetenoughfreshair.Ifweopenourwindowsatnight,wecan
haveplentyoffreshair.Coolairisbetterthanwarmair.
1.Ourbodygrowsmostwhileweare______.
A.eating
B.playing
C.sleeping
2.Toolittlesleepmakesus______.
A.tired
B.hungry
C.happy
3.—Whatmaycauseustofeeltiredinthemorning?
   —______duringthesleep.
A.Toomuchair
B.Notenoughfreshair
C.Toomuchcoldair
4.Howmanyhoursofsleepshould9-year-oldchildrenhaveeverynight?
A.8hours.
B.9hours.
C.10hours.
5.Whatdothelungsneedmost?
A.Freshair.
B.Exercise.
C.Warmair.

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