根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    After their 15-year-old pet dog died, Rain and his wife, Ann, looked for months to find the right new pet. "I love dogs." said Rain, a worker at a health club in New York. "I can't 1 not having one.

    "Finally, the couple found a lovely young 2 and decided to 3 him home. They named him Little Sheep. Little Sheep quickly made himself at home, sleeping on his new 4 bed at night.

    With heart disease for 25 years, Rain 5 look his medicine four times a day and always had no problems. 6 on March 17, he took the wrong amount(数量) of medicine before he went to sleep. When he got out of bed to 7 the bathroom at night, suddenly, he felt his heart beating fast and later fell to the floor heavily.

    "Little Sheep was usually very 8 and well-behaved," said Ann. "But when my husband hit the floor, the dog gave a loud cry like a wild animal. I was woken but didn't know what was happening. Then l saw my husband 9 on tile bathroom floor. I ran for the 10 and called a hospital at once. "Rain spent several hours in the hospital. By 6:30 a. m., he had been 11 enough to go home. "It surprises me that Little Sheep has such great 12," said his thankful owner. "He's becoming a calm little gentleman. We can walk him on our street, unleashed(未拴住的), without any problem. He's got a lot of 13 now, and everyone wants to 14 him kindly. "

    "We feel the name Little Sheep is not good enough," said Rain. "So now we call him Big Hero, more 15 for an animal of his ability. "

    An old man was in a bank. He was arguing    1 how much money he had in the bank.   2 he was arguing, a young man came into the bank and said to the old man, "I've just come from your son. He gave me a letter and this piece of silver for you."

    He then gave the silver to the old man. Because the old man had weak eyes-he asked the banker to read him his son's letter.

    The banker read," I have  3  you a piece of silver that weighs 4 kilos."

    The old man was very 4 and asked the banker to give him some dollars for his silver. But when the banker weighed the silver, he  5 that it weighed 5 kilos.

    "The old man will never know," he thought. So he only gave him dollars for 4 kilos of silver.

  Later the banker examined the silver  6  and discovered that it was not silver. It was tin(锡).   7 he ran after the old man and shouted, "You have  8  me. You gave me tin,   9  silver."

  The old man then asked the banker to weigh the piece of tin. It weighed 5 kilos.

  "I am not robbing you, "said the old man. "You are trying to rob me! The piece of silver I gave you 10 weighed 4 kilos!"

    When one door of happiness closes, another opens. However, we often look at the 1 door so long that we can't see the one that has been opened for us. It's true that we don't know 2 we've got until we lose it, and it's also true that we don't know what we've been 3 until it goes away.

    Giving someone all your 4 doesn't mean that they'll love you back. Don't expect love in return. Just 5 for it to grow in their hearts.

    There are many moments in life when you miss someone so much that you want to bring them into your 6 and hug them for real! Dream what you want to dream, go where you want to go, and 7 what you want to be, 8 you have only one life and one chance to do all the things you want to do.

    Happiness lies in those who have cried, those who have been hurt, those who have searched, and those who have tried, for only they can understand the 9 of their lives. The 10 future will always be based on a forgotten past. You can't go on well in your life until you let your past failure and heartaches go.

    Vienna is a beautiful old city on the River Danube in the center of Europe. It's the capital city of Austria and the center of European classical music. In the 18th century a lot of musicians came to study and work in Vienna.

    In the Strauss family, there were two composers called Johann Strauss: the father and the son. The father, Johann Strauss the elder, wrote and played music for traditional dances, called the waltz. His dance music made him famous all over Europe. The son, Johann Strauss the younger, was also very successful and popular. He wrote over 150 waltzes. In 1866 he wrote The Blue Danube waltz.

    Mozart was another very important composer. He was born in Austria in 1756. Before he was six, he played not only the piano but also the violin. His family took him around Europe and he gave concerts in many cities. He wrote hundreds of wonderful pieces of music. But he became very poor and died in 1791 when he was only 35. Like Johann Strauss, father and son, he was a great European musician, and many people still think his music is perfect.

    Every day in all kinds of weather, many thousands of men and women like jogging. Why has jogging slowly for long distance become so1? Because jogging makes the heart stronger and helps people2 weight. It can also help them feel3 about themselves.

    Donald Robbins is a forty-two office worker, weighing about over 150 kg. He began jogging a few years ago because he felt he was too4. At first he could only5 about 100 yards. Two years later, he ran in a marathon race over twenty-six miles. Many joggers, like Donald Robbins, feel that if they can succeed in jogging, they can also succeed in6 things.

    Should you jog too? If you do, be sure to ask your doctor for7 Jogging may be too much exercise for you. Does jogging cost much? No, it actually costs almost8 But it is very important to have a good pair of shoes that were made especially for jogging.

    How fast should you go? Jog with a friend and talk to each other as you run. If you have difficulty in9 you are going too fast.

    How far should you go? Remember not to go too far or too soon. In fact, you should walk and do not run for the first few times. Then do some short jogs, but no more than "hat you can do10. After that, increase your distance a quarter or half mile every two weeks or so.

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