RobertEdwardswasblindedinatrafficaccident.Hewasalsoalittledeaf_51_oldage.Lastweek,hewastakingawalknearhishomewhenathunderstormcame.Hehid_52_thestormunderabigtreeandwasstruckbylightning.Hewasknocked_53_thegroundandwokeupsome20minutes_54_,lyingfacedowninwaterinwaterbelowatree.Hewentintothehouseandlaydowninbed.Ashorttimelater,heawoke;hislegsfelt_55_andhewastrembling,but,whenheopenedhiseyes,hecouldseetheclockacrosstheroomfadinginandoutinfrontofhim.Whenhiswifeentered,he_56_herforthefirsttimeinnineyears.Doctors_57_thathehadregainedhissightandhearingobviouslyfromtheflashoflightning,buttheywereunabletoexplainthat.Theonly_58_explanationofferedbyonedoctorwasthat,_59_Edwardslosthissightasaresultoftraumainaterribleaccident,perhapstheonlywayitcouldberestoredwasby_60_trauma.
__________
A. because
B. because of
C. as
D. since