Sandwiches are delicious, but do you know how the first sandwich came? An English earl(伯爵)called John Montagu made it three hundred years ago. Montagu was interested in card games. He would play these games with his friends for a long time. He found it too boring to stop his games for meals.

    One day, in the middle of a game, Montagu was served a meal of sliced meat with bread. At that time, Montagu was playing the game that needed its players to cover one card over another. As Montagu looked at both the game and his food, an idea came to his mind.

    He took a piece of bread, put a piece of meat on it and covered that with another piece of bread. Then Montagu could play cards with one hand and eat his meal with another.

    Montagu's friends called the new meal sandwich because Montagu's full title was “the Earl of Sandwich”.

根据短文内容，选择最佳答案。

    Mr. Brown is a teacher. He is from New York, America. He would like to work in China because he likes our country. He thinks Chinese people are very friendly and he likes to live in China. He is happy to work in our school. He likes the school life here. He teaches English. There are 50 students in his class. Mr. Brown is kind. He and his students are good friends, too.

    Now some of Mr. Brown's students are playing sports on the playground(操场). Bill and Mike aye playing tennis. Tom and John are playing ping-pong. The other students are playing basketball. Mr. Brown is happy to play basketball with them. They really have a good time.

    Linda was a sixteen-year-old girl in Canada. She was feeling bad for several days. Her mother took her to a hospital and the doctors found out that she had cancer(癌症). Linda's life changed. She began to go to the hospital often for treatment(治疗), and she also became depressed.

    The hospitals and the doctors were good, but Linda did not have hope herself. Linda's mother called a flower shop close to the hospital. "I want some beautiful flowers for my daughter. She is a teen girl with cancer. "She told the shop owner.

    Later, the flowers arrived. Then Linda saw something unusual. It was a card. It read, "Linda, I own(拥有)this flower shop. I had cancer when I was fifteen years old. I am 24 years old now. Good luck. My heart goes out to you.

Yours,

Alice

    Linda smiled. She finally felt some real hope. She found the will(意志)to live. Little things make a big difference. All of us can give little things like kindness encouragement and hope to others.

    "I am a selfish child.

    I hope the sunshine lies only upon me, so I can feel its warmth.

I am a selfish child.

    I hope there is a corner of the world that can comfortable for me when I am sad,

    I am a selfish child.

    I hope my mom belongs only to me, so I can enjoy the sweetness of love. "

    This poem was written by a middle school student in a lonely mountains town in Yunnan Province during her first poetry class. The girl missed her mother, who died when she was 5.

    Kang Yu, the teacher who taught the girl how to write the poem, graduated from Renmin University of China in Beijing in 2015. Soon after her gradation, Kang moved to a town in Yunnan, and worked as a teacher at a middle school there.

    Kang said, "Compared with students in the city, perhaps students in the countryside need a way to express their feelings and be heard more." Supported by the headmaster and other teachers, the school held eight poetry classes for students every year.

    As the classes grew in popularity, Kang became the school's favourite teacher. After she finished her teaching at the school in June 2017, she returned m Beijing and planned to study abroad.

    However, on Teachers' Day in 2017, Kang received a big box full of poems and Letters written by students at her old school. She felt she was needed and decided to abandon her plan of studying abroad. Instead, she set up Enlighten our Future, a charity that reaches students in the countryside how to write poems.

    "Now, I go to several places every week I sleep less than six hours a night and the job  provides no vacations and little money, but the happiness and satisfaction I feel is rewarding enough." Kang said.

    A farmer was put in prison(监狱). One day, he got a letter from his wife. "I am worried about our farm," she wrote. "It's time to plant potatoes, but I can't do all the digging(挖) by myself." The farmer thought over and then had an idea. He wrote to his wife, "Don't dig the fields. This is where my gold(金子) is. Don't plant potatoes until I come home." A few days later, the farmer got another letter from his wife. It said, "Two days ago, about ten prison guards(监狱看守) came to our fields. It looked as if they were looking for something. They have dug our field." The farmer wrote to his wife at once. "Now you can plant our potatoes," he wrote.

Hong Kong has forty public beaches(海滩). Some of the beaches are among the best in the world. People can go there for a swim. You can go to most of them by bus. To go to some beaches you must take a boat. There are toilets, changing rooms and places to buy food and drink on most of the beaches.

You will swim there without danger if you remember these instructions(提示):

1.Never swim alone. 

2. Never swim after a meal or when you feel hungry or tired. 

3. Do not stay in the water too long. 

4. Never go out in a boat if you cannot swim.

Remember: A red flag (旗)means that it is dangerous for anybody to go into the water. A blue flag means that it is dangerous for children.