Mabel is a beautiful girl. She likes all kinds of clothes, but she didn't1 her heart into her lessons when she was at school. With her friends' help, she finally finished middle school, 2 she learned little there. Of course, she can't do any important work and now she is a salesgirl in a 3 She has to work there and hopes to find a better one .

    One afternoon the girl argued with her mother angrily. So the following morning, . When she served an old man, she was very4 The old man chose a pair of shoes and bought them. Before he left, he asked, "How 5  will the shoes last?"

"It depends. If you don't use them .the shoes will  6  be broken. "

The old man  7 nothing and went away. That afternoon, while Mabel was  8  for supper, she cut her finger. She had to go to a hospital. That old man happened to be on duty. After Mabel got the medicine from him, she asked, "When will I get 9 ?"

    "It depends, "said the old man. "If you don't use 10 , you'll lose your finger. "

    Mr. Black was over fifty years old. He sometimes made some mistakes in his work, and he lost his work. So he had1time every day to do something. Then he often met his old friends under a big tree. They had drinks there and2anything they liked.

    One day, some old men were sitting together again and talking about young people in this world. They all agreed that the old people were3than young people. Then one of the old4said that young men were stronger than old men.

5of them agreed that this was true,6Mr. Black didn't. He said, "No. I am as strong now as when I was a young man." His friends were surprised7what he said.

"Well," said Mr. Black, "Near my house there is a big stone. When I was a young man, I used8to move it, but I couldn't because I was not9. I am an old man now, and when I try to move it, I still10. So, I am as strong as when I was young."

Wei Dongyi is a teacher at Peking University. He always holds a big bottle of water, and he has caught much 1 these days. Wei lives a simple life and he is a little

shy . When he was asked to say something to encourage high school students, he just said, 2 up. Welcome to Peking University. I don't know what to say. "

After this interview went viral(爆 红 ), the public learned Wei Dongyi is so talented that he is3 "God"Wei. Wei won gold medals at the International Mathematical Olympiad twice at high school. He4 Peking university without taking entrance examination. 

At PKU, Wei is famous not only as a math genius (天 才 ) 5  for his simple lifestyle. Wei doesn't use social media, doesn't like answering the6 and doesn't go to parties. He likes7 the radio and what he likes best is to solve math problems. He will be8 if you talk with him about math. 

    His mother said Wei is9 and he also has a lot of weak points. For example, his scores in Chinese and English are low. 

    He is simple. He10 loves math, and he is willing to put all his heart into it. 

Here are three students.They are talking about sports.