单选题
When I was young, I spent my summer vacations on my grandparents" farm. The summer that I graduated from college, I
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my grandparents once again. When I arrived, I discovered that there was a family
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in progress.
Grandpa"s dog and hunting partner, Rusty, had taken on a very bad
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in his old age. He had begun
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into the chicken coop (鸡笼) and eating eggs. In the eyes of the local farmers,
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dogs started stealing eggs, there was no
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to cure them. They knew there was only one thing to be done
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such a dog—you had to shoot it and the sooner the
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.
Rusty and Grandpa were old friends. Grandpa certainly didn"t
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to shoot Rusty, but he knew it needed to be done. The "egg money" was Grandma"s private income, so you can imagine
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she felt about the problem.
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the inexperienced confidence of youth, I told Grandpa that I thought I could "cure" the egg-stealing dog. I wanted to at least have a
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to save Rusty"s life, and save Grandpa from the sadness of
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Rusty.
The next morning, I broke open six fresh eggs and put them in Rusty"s bowl
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at the door to the chicken coop. Rusty came
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and noticed the eggs. He quickly
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the eggs and happily walked off for his nap (打盹). The following morning I did the
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thing. I put the eggs a few feet away from the chicken coop, toward the back door of the farmhouse
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Grandma usually fed Rusty. The next day I again moved the bowl closer to the house, and added some dog food to the eggs. Every day I moved the bowl closer to the back door, mixing more dog food and
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eggs. By the time the bowl reached the door, it was all dog food and no eggs. Rusty had again become
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to looking for his food at the back door of the house, and never again went into the chicken coop.