Theyoungengineersatdownonarockandrestedhisheadinhishands.Hewouldnevergethome;itwas 36 .Forweekshehadbeen 37 intheNorthwestCanadianforest.Nowtherewasaterrible 38 behindhiseyesand 39 ofallhehadgoneblind.
Suddenlyaman 40 outofthewoodsanIndianwhohadbeenhuntinginthearea.Seeingtheengineer's 41 hecaughtafishinanearby 42 andfedthesickmanthe 43 ofthefishandsomefleshfromitshead. 44 withinafewhourstheengineer'spainwas 45 .Adaylaterhecould 46 againandthenextdayhehad 47 recovered.
Whenhereturnedhometheengineertoldthe 48 toDrPrice. 49 yearslaterdiditbecomea(n) 50 factthatthiswasjustaneverydaylifeguarddoingitswork.Forwhattheengineerdidbyeatingfisheyeswasto 51 vitamin(维生素).
VitaminA'sbiggestjobistokeeptheeyes 52 .WithoutVitaminApeopleandanimalsgetnightblindnessandothereyeproblems.WithoutVitaminApeoplecanevenbetotallyblind.VitaminAhelpstokeeptheskiningood 53 .Aalsohelps 54 bonesandteethandhassomethingtodowithproper 55 ofbloodcells.
小题1:A.hopelessB.uselessC.carelessD.timeless小题2:A.lostB.losingC.huntingD.working小题3:A.disasterB.illnessC.painD.heat小题4:A.goodB.badC.bestD.worst小题5:A.reachedB.appearedC.hidD.watched小题6:A.starvationB.troubleC.realityD.situation小题7:A.pondB.streamC.placeD.sea