阅读下面的材料，然后根据材料内容回答问题。

    Annie lived alone in Chicago. One day, she fell down in her bedroom and broke her leg. So she tried to call her friend Lisa. But she dialed (拨打) a wrong number. The call reached Taylor, an 18-year-old girl. She was a college student and she lived hundreds of miles away from Chicago.

    At that time Taylor was reading in bed. She thought it was somebody playing a joke. When she was going to hang up the phone, she heard a woman saying “Help! Help!” From it Taylor thought something bad must have happened to the woman. After she got the woman's name and address, Taylor called 911 at once. Then she tried to make Annie feel comfortable. She spoke to Annie on the phone till the doctors arrived at Annie's house. At last Annie was taken to hospital in time.

    As soon as Annie felt better, she wrote a letter to Taylor to thank her.

    Potato chips are Americans' favorite snacks(零食). Where do potato chips come from? In 1853 a native(本土) American named George Crum made the first potato chips. Crum was a chide(头目) in an expensive restaurant in Saratogasprings， New York. One day， a customer(顾客) did not like the French fries. He said they were too thick(厚的). So Crum made more， this time thinner. The customer still didn't like them. Crum got unhappy. He decided to make the customer angry. So he cut the potatoes， very thin. The customer loved them.

    Other people wanted Crum's  potato chips. Now， there was a new food on the menu— Saratoga chips. Soon Crum opened his own restaurant and made his special chips.

    It took a long time to make potato chips. People peeled the potatoes by hand. Then in 1920，the automatic(自动的) potato peeler changed everything. Now it was faster and easier to make potato chips. Now potato chips were not a specialty. They were a popular snack food， but only in the north.

    A salesman named Herman Lay wanted to sell potato chips in the south. He sold potato chips in bags. His business grew. Today， Americans eat a lot of potato chips every day.

    At East China University of Science and Technology, students who finish their food in the campus canteen get a coupon (优惠券) when they return their trays(托盘). Students can collect coupons and exchange them for small gifts, such as books, magazines and mobile phone covers.

    “It has been such a surprise,” said Liang Zhaoyun, 19, a student in this university. “It has given us one more motivation (动机)to finish our food.”

    “The aim of the activity is not only to encourage students to finish their food. We hope it can also motivate students to choose a more environment-friendly and healthier lifestyle,” said Tao Siliang, a teacher of this university.

    But some canteen food is poorly prepared, meaning that students are not willing to finish it all.

    “Generally speaking, the dishes in our canteen are all right,  ①  .Most students are the only child in their family and aren't used to some of the dishes,” said Wang Guangji, a leader of this university. 

    What if you really can't finish all your food? The canteen provides a take-away service. “If you can't finish all your food,  ②  .Even if you feed the cat, it's not wasted,” said Zhou Zeyong, another student of this university.

    “I'm glad that we've reduced waste since starting the campus ‘eat-up' activity. But if we  ③  students not to waste food, we should also improve the meals in campus canteens,” said Wang.

根据短文内容完成下列任务。

    Jack London was born in San Francisco in 1876. Life was hard when Jack was growing up and he started working when he was 10. He did lots of different jobs. In his free time he went to the library and he spent many hours there, reading. In 1894 he went back to school, and published his first short story Typhoon, off the Coast of Japan. Then in 1896 he went to the University of California at Berkeley, but he had to leave because of money problems.

    In 1897 he left for the Klondike Gold Rush in Alaska. However, he became ill and came home and started working as a full-time writer. He wrote short stories and soon he was well-known. In 1903 he wrote his most famous story: The Call of the Wild.  His next novel was The Sea-Wolf (1904) which is perhaps his best literary novel.  With the earnings he bought a large farm in Califonua, where he died in 1916, aged only 40 years old.

    London was a prolific writer in his short life.  Between 1905 and 1916 he published 18 novels and six collections of stories, as well as a play, various works of non-fiction and a biography.  He is best-known for his descriptions of nature and the animal world.

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