A farmer carelessly lost an expensive gold watch in the barn on the farm, where he searched for everywhere but in vain.
    So he put a     1    on the gate of the farm: whoever finds the gold watch will be     2    100 dollars.
    Facing the     3    of the handsome reward, people tried their best to look for everywhere.     4      , the grain was piled like a hill along with bales of     5    , so if they wanted to find the gold watch, it would be like fishing for a needle in the     6    . When the sun set, the gold watch was not found yet, They took pains but found     7    , so they began     8    the watch was too small, the barn was too large and the straw was too thick. It was getting     9    , that they were still unable to find it.
    So they     10    the temptation of 100 dollars one by one. But only a small boy in     11    clothes was still not discouraged, but kept     12    it in the grain. He had nothing to eat throughout the day. In order to solve the family problem, he was     13    to find the gold watch and let his parents, brothers and sisters have a full meal.
    The night was already getting late and the boy was also tired. He was     14    in the straw to have a rest     15    he heard a strange "tick-tock". He immediately held his breath and listen     16   
    It was quieter in the barn while "tick-tock"     17    clearly. The boy     18    the sound, found the gold watch buried in the depths of the grain and finally got the 100 dollars. Like the gold watch in the barn,     19    has existed around us and spread in every corner of life. Only we are calm and     20    look for it, can we find it. 
 
【正确答案】 A
【答案解析】 A项意为“通知、布告”,B项意为“信号”,C项意为“消息”,D项意为“照片”。根据句意可知,农民丢了金表,张贴了一个布告,谁找到金表就奖励谁100美元,故本题选A。