阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

     Karen spent more than 75 years working as a cleaner. Certainly nobody would think that she was rich, 1 she was paid only a few dollars each time. So they were all 2 when Jenny decided to give $150,000 to the University of Southern Mississippi.

    The money, 3, was her life savings. She could save such a large amount of money because she lived a very 4 life. She never learned to drive. When she wanted to go somewhere, she just walked. She never flew to anywhere 5 her donation（捐献）, and in the 50 years she had been out of the South only once. The 6 in which she lived was also a rather old one, and her last uncle left her. Only after she became known in 7 did she begin to travel all over the country. Since then, she had been the 8 of many interviews and articles. She was even invited to the White House.

    Her donation was for the students who clearly needed 9 help. She herself left school in the sixth grade and had never married or had children. She said to the reporters that the idea of helping somebody's child go to college gave her much 10.

    One day, several young people went for a picnic. They walked in the open air with 1.

    As soon as they came to a river, they 2 by the clear and calm water. They played with cool water excitedly. Suddenly, a lovely 3 passed by Tom. He tried to catch it, 4 the fish was just swimming a few feet ahead of him. He ran 5 it, hoping to catch it.

    Gradually, Tom came to the water with waist deep. He felt 6, so he wanted to jump out of the water. 7 up and down in the water, he went farther and farther away from the bank. Just at that time, Barry saw this, he offered 8 help to Tom at once. Tom saw someone 9 to him, he caught the person 10 was close to him. Unfortunately, Barry was dragged into the water. The two struggled in the water 11.  Amy, on the bank, noticed that, and she 12 others near the bank.

    Hearing their cries, two farmers near the river took a long rope there. They threw one end of the rope to 13 of them in the water. Together, all the people on the bank pulled 14 end.

    Finally, the two boys were saved!

    The experience has told us 15 we should do something to help others correctly.

    Devon Miller put the bag onto his back.

    "Did you take the water?" asked his dad.

    "Yes," said Devon.

    "How about the bread? And the map?"

    "Don't worry. I put 1 m my bag, Dad," Devon said. "Come on. Let's go!"

    Devon couldn't wait to start the hike (徒步旅行). It was 2 and Devon expected (期待) a good, long hike. Mr. Miller3a little, because it was his first hiking trip. Usually Devon's mom took him, 4 today she had to work. So Devon's dad decided to have a try.

    "Where do we start?" his dad asked.

    " 5 that tree with the yellow mark (记号)? That's the start of a small road. We just 6 the marks on the trees along the road. The small road goes in a big circle (圆圈). We'll 7 here in a few hours."

    Mr. Miller tried to smile. "Sounds like 8 !"

    Devon and his dad started their hike. It was a beautiful spring day. The weather was cool, but not very cold. They walked and walked. Then they stopped and ate their bread 9 lunch.

    Mr. Miller seemed a lot more relaxed. "This is fun. I'll go hiking with you 10 anytime," he said.

    On 28 of March Richard Byrd stood outside the small house. He shook hands with the men who were leaving. They were heading back to the main camp on the coast of Antarctica (南极洲).

    He would 1 to work at the base camp.

    "I don't like leaving you here alone," Pete Demas said." I'll be 2,"Byrd replied.

    He was looking forward to the challenge of spending the winter at the base camp. He would be recording the weather. There was plenty of food and fuel (燃料) in the tiny house. He felt sure 3would go wrong.

    But something did go wrong. Byrd was burning the fuel for 4. But the fumes (有毒气体) were not leaving the house. Slowly he was being poisoned (中毒). On May 31 he broke down.

    When he came to, he made himself into his sleeping bag. Three days later he 5it was a

    Sunday. The men would be 6 his radio message. Byrd moved hard out of bed and 7 the call. He didn't want the men to know how 8he was. It was too dangerous for them to come to save him.

By will-power alone, Byrd managed to stay alive. He was so 9that he could hardly walk. But he forced himself to do the basics. He 10food and made myself eat. He took 11 of weather and sent radio messages. But by late June, the men 12that something was wrong. Most of the time, Byrd's messages made no sense.

    On August 11 Demas and two others reached the base camp. They 13 recognized (认出) Byrd. He was very thin and looked terrible. Byrd 14 them and then fell to the ground. The men had arrived in time. After two months of care, Byrd's good 15 returned. He and his men worked together again.

    I moved to a new neighborhood two months ago. A taxi driver lived in a house with a large1across the road. He's a single parent with two school-age children. At the end of the day, he would2his taxi on the road. "Why not in the garage？"I asked myself.

    Then one day I learned that he had another3. In the afternoon he would come home from work, leave his taxi and go out4his personal business in his other car, not in his taxi. I felt it was5.

    I really want to see his personal car but did not make it. Two weeks later, I6 to be outside one evening, when the garage door was7and he drove out in his "own" car: a Rolls-Royce(劳斯莱斯)! It8 me completely when I realized what that meant. You see, he was a taxi driver. 9deep inside, he saw himself as something else：a Rolls-Royce owner and a(n)10. He drove others in his taxi but himself and his children in his Rolls-Royce. The world looked at his taxi and called him a taxi driver. But for him, a taxi was11something he drove for a living. Rolls-Royce was something he drove for a(n)12.

    We go to bed every night and13every morning as parents or children, not as bankers, CEOs or professors. We go for a party as close friends or go for a vacation as a family. We love life as it is. Yet often, we base our happiness and14on how high we climb the social ladder(阶梯)—how much bigger and better a taxi we have. And we fail to notice Rolls-Royce, keeping it dusty in our garage. We should pay more attention to 15we are than what we do！Isn't it the true meaning of life？