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1、23DifficultLanguagePointsandKeytoPartoftheExercisesDifficultLanguagePointsandKeytoPartoftheExercises,ReadingCourse,Book3UNITONEPassage1AWhiteHeron1.(Line5)Sylviafeltapartofthegrayshadowsandthemovingleaves.→feltapart:felttobepartof2.(Line21)Butshesaidhername,a
2、nddroppedherheadlikeabrokenflower.→dropped:lowered3.(Line32)“Youmightdobetterifyouwentouttotheroadamileaway…”→dobetter:havemoresuccess4.(Line35)Sylvy,stepround,andsetaplateforthegentleman!→steparound:hurryup5.(Line72)Ifsheclimbeditearlyinthemorning,shecouldse
3、ethewholeworld.→thewholeworld:formiles6.(Line87)Sylvia’sfaceshonelikeastar….→likeastar:happilyKeytoExerciseII1.Thegirlwaslivinginthewoodswithhergrandmother.2.Hewasascientistwhocollectedbirds.Hewaslookingforaheron.3.Itwaslove.4.Becausethegirlcouldshowthemanwhe
4、retheheronwas.5.Yes,sheknewtheforestwell.6.Thebirdwaslivinghappilyintheforestandwasasmuchpartofnatureassheherself.Theyhadtogetherwatchedthesunrisefromthetopofthetree.Shecouldnottellitssecretandgiveitslifeaway.Passage2TheNutrientsinFood1.(Line22)Ifadultseattoo
5、manycarbohydratesandfats,theycanaddanother45kilograms.→another:more,inaddition2.(Line32)Nutritionistscalleightoftheseaminoacidsessentialbecausethebodydoesnotmanufacturethem..→call:considertobemanufacture:produceTranslation:营养学家认为这八种氨基酸是必需的，因为人体不能自己制造它们。3.(Lin
6、e72)Theirheartsbeatfastersotheirbodiescangetmoreoxygen.→so:withthepurpose(that)4.(Line81)VitaminAinthedietcomesfromdeepyellowfruitsandvegetables,darkgreenleafyvegetables,andwholemilk.KeytoExerciseII1.Becausetheyprovidethebodywithheatandenergy.2.Milkandhardche
7、ese.3.Proteinsarenecessaryforlife.Theycanbuildandrepairbodytissues.Theyarean2323DifficultLanguagePointsandKeytoPartoftheExercisesimportantpartofmuscles,organs,skinandhair.1.Somenutrientsprovidefuelforenergy,somebuildbodytissuesandsomehelpcontroldifferentproce
8、ssesofthebody.2.Ifapersondoesnothaveenoughiron,thepersonwillgetadiseasecalledanemia.Passage3CreativityWillDominateOurTime1.(Line8)Then,inthelatterdecadesofthe18thcentury,astheindustrialRe
