One year, a college in the United States announced that it would offer a lot of money for the pure white marigold(金盏花). The high reward attracted so many people, but in the nature, besides golden, the marigold is brown, and it is not easy to get the white one. So after they were excited for a time, many people had forgotten the announcement.

    One normal day after 20 years, the college received a letter and 100 seeds of pure white marigold. It was an old woman of over 70 years old. Some experts in the college doubted it, but in order not to let her down, those seeds finally took root (根）in the earth. The miracle appeared after one year; the field was covered by pure white marigold.

     Therefore, the old woman who was always unknown to the public became a new focus.

The old woman was a flower-lover. When she read the announcement 20 years ago, she got very excited like others. But her eight children were totally against her decision. After all, a woman who never knew the seed genetics(遗传学) couldn't complete what the experts could never do, so her thought was only a day dream.

     Still, the old woman didn't change her mind and went on working. She planted some of the most common seeds and took good care of them. A year later, when the marigold came out, she chose one faintest(最暗淡的) from those golden and brown flowers and got the best seed. The next year, she again grew them and chose ...Day after day, year after year, through many seasons, the old woman's husband died, her children flew far, a lot of things happened in her life, but only the wish to grow the pure white marigold took root in her heart.

     Finally, after 20 years on the day we all know, in the garden she saw a marigold, which was nearly white, but as white as silver or snow.

     A problem even experts couldn't deal with was solved by an old woman who didn't understand genetics. Was it a miracle (奇迹）?

     To take root in the heart, even the most common seed, can grow into a miracle!

    One day, a fisherman caught a golden fish.” People let me go,” the golden fish said.” I will give you whatever you want.”

    “Thank you, but I don't want anything.” the fisherman said. He put the golden fish back into the sea.But the fisherman's wife was angry.” You should ask for a bigger wooden basin!” she shouted. The fisherman went to the seaside and told the golden fish.

    “Don't worry, she has a new basin now.” the golden fish said.

    The fisherman went home. But his wife was even angrier. “I want a large house!” The fisherman went to tell the golden fish again.

    But the old woman was never satisfied. “I want to be the queen of the sea! And I want the golden fish to serve me!”

    The fisherman went to tell the golden fish. Then golden fish swan away without saying anything. Then fisherman walked back. His wife was in her cold clothes. Her old and broken wooden basin was next to her.

    David is a college student. Last year he went on vacation to Yunnan with his cousin, Cindy. First, they went to Kunming by plane. David liked the weather there. It was not cold or hot. It was really fine. Cindy liked all kinds of flowers best there.

    After two weeks, they went to Dali by train. They visited the famous Dali old city and some other places of interest there. They also knew about many local customs(当地的风俗).

    One week later, David and Cindy took the bus to Lijiang—a beautiful town. They visited Jade Dragon Snow Mountain(玉龙雪山). It was really wonderful. They also visited the old town of Lijiang. There were many interesting stores and restaurants there. They ate much fine food there. And Cindy bought many presents(礼物) for her sister Mary and her brother Bill. David had to come back to the university so they only stayed in Lijiang for one week.

    David likes Lijiang so much. He hopes to visit it this summer holiday again.

根据短文内容，选择正确答案：