In1977adeadauthorofdetectivestoriessavedthelifeofa19-month-oldbabyinamostunusualway.TheauthorwasAgathaChristieoneofthemostsuccessfulwritersofdetectivestoriesintheworld.InJune1977ababygirlbecameser

　　In1977adeadauthorofdetectivestoriessavedthelifeofa19-month-oldbabyinamostunusualway.TheauthorwasAgathaChristieoneofthemostsuccessfulwritersofdetectivestoriesintheworld.

　　InJune1977ababygirlbecameseriouslyillinQatarnearSaudiArabia.Doctorswereunableto_31_thecauseofherillnesssoshe_32_toLondonandadmittedtoHammersmithHospitalwherespecialisthelpwas_33_.Shewasthenonlyhalf-conscious（半昏迷）andonthe“DangerouslyIll”list.Ateamofdoctorshurriedto_34_thebabyonlytodiscoverthatthey 35_werepuzzledbytheveryunusualsymptoms.Whiletheywerediscussingthebaby’scaseanurseaskedto__36tothem.

　　“Excuseme”saidnurseMarshaMaitland“_37_Ithinkthebabyis__38_fromthalliumpoisoning.”

　　“_39_makesyouthinkthat?”Dr.Brownasked.“Thalliumpoisoningisextremely_40_.”

　　“AfewdaysagoIwasreadinganovelcalledAPaleHorse__41__AgathaChristie”NurseMaitlandexplained.“Inthebooksomebodyusesthalliumpoisonand_42_thesymptomsare_43_.Theyareexactlythesameasthebaby’s.”

　　“You’reveryobservantandyoumayberight”anotherdoctorsaid.“We’ll_44_sometestsandfindout_45_it’sthalliumornot.”

　　The_46_showedthatthebabyhad 47_beenpoisonedbythalliumararemetalusedinmakingoptical（光学的）glass._48_theyknewthecauseofillnessthedoctorswereabletogivethecorrecttreatment.Thebabysoon_49_andwassentbacktoQatar.Inquiries（调查）showedthatthepoison__50_fromaninsecticide（杀虫剂）usedinQatar.

　　【小题1】A．describeB．diagnoseC．discoverD．discuss【小题2】A．flewB．sentC．wentD．wasflown【小题3】A．inexpensiveB．importantC．availableD．impossible【小题4】A．examineB．seeC．lookafterD．cure【小题5】