Westarttogrowfromthemomentwewereborn.Wekeepgrowingandgrowinguntilwebecomeadults.Webecomebiggertallerandheavier.
Aswegrowimportantpartsofourbodieschange.Ourbones(骨头)growbiggerandlongertomakeustallerandstronger.Ourmuscles(肌肉)arebiggerinordertosupportourbiggerbodies.Ourskin(皮肤)alsogrowsasourbodiesgetbigger.
Whilethepartsofourbodiesgrowtheydoitatdifferentspeed.Forexampleone’snosemighthavefinishedgrowingbuttheotherpartsofthefacearestillchanging.
Similarlyeachchildgrowsathisorherownspeedsoweseechildreninallkindsofshapesandsizes.Notoneofthemisthesameasanotherexceptforsometwins.Somegrowfasterthanotherssotheylookbiggerandtaller.Somegrowataslowerspeedandmaybesmallerandshorter.
Ourgenesalsodeterminehowmuchwegrow.Itisunlikely(不太可能的)tohaveshortparentsfortallchildren.Parentswhoaretallarejustunlikelytohaveveryshortchildren.
Nomatterhowquicklyandhowmuchwegroweachpersonisdifferent.Thatisthebeautyofhumangrowth.
( )1.Ourbodiesneverstopgrowing.
A.untilwebeginprimaryschool
B.fromthedaywewerebornuntilwebecomeadults
C.untilwefinishhighschool
D.untilwearethesamesizeasourparents
( )2.Whydoesourskingrow?
A.Becauseitcanmakeustaller.
B.Becauseitcanmakeusstronger.
C.Becauseourgenesaredifferent.
D.Becauseourbodiesgrow.
( )3.Thefourthparagraphmainlytellsus.
A.howsomechildrengrowfaster
B.noteverychildgrowsatthesamespeed
C.sometwinsgrowattheirownspeed
D.whysomechildrengrowshorterthanothers
( )4.What’sthemeaningoftheunderlinedword“determine”inChinese?
A.决定 B.猜测 C.了解 D.测量
( )5.WhichofthefollowingsentencesisNOTtrue?
A.Everychildgrowsdifferentlybutsomemaybethesame.
B.Ourmusclesgrowtogetherwithotherbodyparts.
C.Thebodysizeofparentsdoesnotinfluencethebodysizeoftheirchildren.
D.Thepartsofourbodiesgrowatdifferentspeed.
