What was discovered by accident? The answer is penicillin (青霉素). It kills germs. By killing germs, it saves lives. Suppose you are sick. You go to a doctor. She examines you. She says you have a “staph” infection (葡萄球菌感染). She gives you some medicine. You take it. The medicine knocks out the staph. Soon you are well. Before penicillin, this would not happen. Staph was almost sure death.

    Everyone wanted a medicine. Laboratories worked day and night. They grew the staph in small dishes. Then they tried to kill it. Nothing worked.

    The laboratory dishes had covers on them. They kept things from falling into dishes. Molds (霉菌) were a big worry. They are always in the air. You can't see them. They're too small. There are thousands of different molds. Molds can make an experiment (实验) fail. That's why dishes are covered.

    Dr. Alexander Fleming was working to kill the staph germ. He worked for years. One day he took a cover off a dish. He looked inside. There was a thick growth of staph germ. There was also some mold. Then he saw something strange. Where the mold was, there was no growth of staph. This is what Fleming probably thought. “By accident, I found a mold to kill the dreaded staph.”

    This is how penicillin was found. But here's the real miracle (奇迹). There are thousands of kinds of molds. But only one kind can kill staph. The mold must have fallen into the dish a few days before. The cover was probably off only a few seconds (秒). In those few seconds the right mold fell into the right dish. Another man might have thrown the dish away. But Fleming was very careful and smart. He understood what the mold did. How lucky the humans were!

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    I'm a Russian student. Last year I came to China for a holiday. It took me 8 hours to arrive in Beijing by plane. It was 11pm when I arrived at the airport. I was tired and wanted to find a hotel.

    The airport was big and black. I didn't know where a hotel was. I saw a Chinese girl in front of me. I studied a little Chinese before, but I couldn't speak well. I spoke to her in Chinese. She couldn't understand me. I asked again and again. At last, she understood. She asked me in Russian, "Are you from Russia?" She could speak Russian well. She told me where the nearest hotel was and sent me to the hotel. What a friendly girl she was!

    It was Day 1 of our vacation on Cortes, a beautiful quiet island. "iPhone, iPhone, iPhone," my son kept moaning (呻吟). In front of him was a big window facing the blue ocean. And a cool gentle wind was coming in from the door. Clearly, he saw and felt none of it.

    Back at home, I'd soon give up and hand the phone over to him after five minutes of listening to this kind of moaning.

    But not here. Before we left, I had told my 10-year-old son the rule—no emails, no Facebook, no video games, and no iPhone. We came here to get away from them all. Here we were on our first day and already, he couldn't stand it.

         ▲      I walked down the grass road to the beach and looked out to the sea. My 6-year-old daughter and my husband were drawing on pieces of wood. They were doing just fine.

    On Day 2, we spent the whole morning digging for shells (贝壳). This time, my son joined us. He collected shellfish and other sea treasures. When we got back to our little wood house, I gave my son a book, and put him on the lovely garden chair. It was almost dinner when he looked up.

    The next few days passed in peace.

    On Day 6, my son was lying beside me on the beach, watching the sun going down. He was playing with the sand. And there was something shining in his eyes. I realized how time slowed down for both of us. It was exactly what I wanted. Finally, we were able to sit quietly without thinking about screens, phone calls and e-mail.

    A week away from all the electronics arid Lile is good.

    One day King Henry was hunting in a forest. Towards evening he told his men to ride home by the main(主要的) road while he went home by another.

    As he came out of the forest, he saw a little boy. "Well, my boy," said the king. "Are you looking for your father?" "No, Sir," answered the boy. "I am looking for the king. They say he is hunting in the forest." Oh, if that is your wish, "said King Henry, "I'll take you to the place where you will see him."

    The boy got up and sat behind the king. On the horse, the king and the boy began to talk. "They say that King Henry always has many men with him," said the boy. "How can I know which he is?" "Oh, it's easy. All the other men will take off their hats, but the king will keep his on." "Do you mean that the one with his hat on will be the king?" "Of course." Soon they came into the main road. The king's men greeted the king by taking off their hats. "Well, my boy," said King Henry, "Which do you think is the king now?" "I don't know," answered the boy," it must be either you or I, because we both have our hats on"

    Hello, everyone! I'd like to tell you something about a famous scientist named Qian Xuesen. He was born in Hangzhou, Zhejiang Province on December 11, 1911. After he graduated from Shanghai Jiao Tong University in 1934, he got a chance to study in USA. After he graduated, he became a teacher as well as a researcher who studied rockets and missile theories.

    When he was 44, he returned to his motherland and the country's space research was almost a blank. In 1956, he set up the first research institute of rockets and missiles. He made such important contributions to the missile and space programs that he was honored as "The Father of China's Missiles". The Chinese people are proud of him.

    He passed away on October 31, 2009 at the age of 98, but all the Chinese will remember him forever. His devotion to his country was expressed in his saying, "My career is in China, my success is in China and my destination is in China!" When someone said he could make much more money if he stayed in the United States, he laughed and said," My family name is Qian, but I don't like qian." His spirit encourages us to love our country and devote ourselves to science.