题目内容：
根据以下材料，回答题Afarmercarelesslylostanexpensivegoldwatchinthebarnonthefarm,wherehesearchedforeverywherebutinvain.
Soheputa21onthegateofthefarm:whoeverfindsthegoldwatchwillbe22100dollars.
Facingthe23ofthehandsomereward,peopletriedtheirbesttolookforeverywhere.24,thegrainwaspiledlikeahillalongwithbalesof25,soiftheywantedtofindthegoldwatch,itwouldbe
likefishingforaneedleinthe26.Whenthesunset,thegoldwatchwasnotfoundyet,
Theytookpainsbutfound27,sotheybegan28thewatchwastoosmall,thebarnwastoolargeandthestrawwastoothick.Itwasgetting29,thattheywerestillunabletofindit.
Sothey30thetemptationof100dollarsonebyone.Butonlyasmallboyin31clotheswasstillnotdiscouraged,butkept32itinthegrain.Hehadnothingtoeatthroughouttheday.Inorderto
solvethefamilyproblem,hewas33tofindthegoldwatchandlethispar-ents,brothersandsistershaveafullmeal.
Thenightwasalreadygettinglateandtheboywasalsotired.Hewas34inthestrawtohavearest35heheardastrange"tick-tock".Heimmediatelyheldhisbreathandlisten36.
Itwasquieterinthebarnwhile"tick-tock"37clearly.Theboy38thesound,found
thegoldwatchburiedinthedepthsofthegrainandfinallygotthe100dollars.Likethegoldwatchinthebarn,39hasexistedaroundusandspreadineverycorneroflife.Onlywearecalmand
40lookforit,canwefindit.
A．notice
B．signal
C．information
D．photograph
参考答案：
答案解析：