B

    Alice was now in a long dark room with doors all round the walls, and she could not see the white rabbit anywhere.

    She tried to open the doors, but they were all locked (上了锁的). "How will I get out again?" she thought sadly. Then she saw a little glass table with three legs, and on the top of it was a very small gold key. Alice quickly took the key and tried it in all the doors, but she couldn't open any.

    Then she saw another door.The door was only forty centimetres high. The little gold key unlocked this door easily, but Alice couldn't get through it—she was much too big. So she lay on the floor and looked through the open door into a beautiful garden with green trees and bright flowers.

    "I'd like to be out there—not in this dark room. Why can't I get smaller?" It was already a very strange day, and Alice was beginning to think that anything was possible.

    After a while she locked the door again, got up and went back to the glass table. She put the key down and then she saw a little bottle on the table. Round the neck of the bottle was a piece of paper with the words "DRINK ME" in large letters.

    "It can be dangerous to drink the liquid(液体) in the bottle," she said. "What will it do to me?" She drank a little bit very slowly. The taste was very nice and very soon Alice finished the bottle.

    "I think I'm getting smaller and smaller every second, " she said. "And now, " she said happily, "I can get through the little door into that beautiful garden."

    She ran at once to the door. Then she remembered that the little gold key was back on the glass table. She ran back to the table for it, but she was now much too small! The key was high above her, on the top of the table. She tried very hard to climb up the table leg, but she couldn't do it.

    At last, tired and unhappy, she got angry with herself. Soon she saw a little glass box near her on the floor. She opened it, and found a very small cake with the words "EAT ME" on it.

    Nothing could surprise Alice now.

When Robert was about two years old, he tried to remove a bottle of milk from the fridge but it fell, spilling (洒出) milk all over the kitchen floor.

When his mother came into the kitchen, instead of shouting at him or punishing him, she said, "Robert, what a great and wonderful mess you have made! I have seldom seen so much milk. Well, the damage has already been done. Would you like to get down and play in the milk for a few minutes before we clean it up?"

In fact, he did. After a few minutes, his mother said, "You know, Robert, whenever you make a mess like this, finally you have to clean it up and bring everything back to its proper order."

After they cleaned up the spilled milk, his mother then said, "You know, what we have here is a failed experiment in how to effectively carry a big milk bottle with two hands. Let's go out in the back yard and fill the bottle with water and see if you can discover a way to carry it without dropping it."

The little boy learned that if he grasped the bottle at the top near the lip with both hands, he could carry it without dropping it. At that moment he knew he didn't need to be afraid to make mistakes. Instead, he learned that mistakes were just good chances for learning something new, which is, after all, what scientific experiments are all about. Even if the experiment "doesn't work", we usually learn something valuable from it.

How can you remember a song for a long time? Why does your teacher use songs to teach you English? There is a scientific reason for this. 

Researchers (研究者) are studying the relationship between music and remembering a foreign language. "Singing could be a new way of learning, especially for a foreign language. The brain likes to remember things in a catchy (悦耳易记的) and relaxing way. For example, children can remember difficult words quickly when they are in a song," said Dr. Karen Ludke. If children find it difficult to learn foreign languages, this new way may help. On his blog (博客), Dr. Ludke wrote "A listen—and—repeat singing way can help to learn foreign languages and open the door for future research in this area."

Many language teachers know the importance of music and they often use it in teaching and learning. Hua Zhuying, a teacher at a Chinese language school in Washington DC, likes using songs in teaching Chinese. She said, "I use music all the time to teach children Chinese. For little kids usually we use English songs but teach them the Chinese lyrics. Not only does it work, but it is fun for children. Sometimes I think if I learned English that way when I was young, maybe I could speak English much better."

Our brain likes music in learning languages, especially for remembering. If you are still having problems in learning a language, why not try singing it out?

One day Ram was lost on his way home and went into a forest. He walked in the forest and saw a den (洞穴) . He went inside and saw a lion there. He was so scared that he ran out{#blank#}1{#/blank#}. At that time, an elephant came and said, "Don't worry. I will be your friend." Great! Could you tell me the way out of the forest? " asked Ram. But the elephant did not know the way either. They walked and walked{#blank#}2{#/blank#}the elephant was trapped in a cage. To save the elephant, Ram asked all the animals in the forest for help, but they could do {#blank#}3{#/blank#}. So Ram had to wait. At last, when the man slept, Ram took the key from his bag and opened the cage. The elephant thanked Ram very much. He called {#blank#}4{#/blank#}elephants and trumpeted (吼叫) with them.{#blank#}5{#/blank#} the sound, some people came to the forest and took Ram home.

The Simpsons' family tree

Hello, I'm Lisa Simpson. I'm from America. I have a big family. This is my family tree. Abraham Simpson is my grandfather. Do you know who else they are?

Malaria(疟疾) has been a deadly problem for humans since ancient times. Countless people have died from the illness. Thankfully, Chinese scientist Tu Youyou found a useful medicine called qinghaosu.

In 1969, Tu became the director of a national project to develop a medicine against malaria. Her team took a special way.▲After reading more than 2,000 old treatments, Tu and her team collected over 600 plants and listed almost 380 possible treatments for malaria. One treatment, which is 1,600 years old, uses sweet wormwood. Tu found it useful and tried to extract(提取) the qinghaosu from it in order to makea medicine. The extraction failed at first, so Tu returned to the classical books again and finally found a way. She used a low- temperature way to extract the qinghaosu and finally succeeded in 1972.

Next, Tu and her team did lots of tests with qinghaosu in fighting against malaria. After her team showed that qinghaosu could treat malaria in mice and monkeys, Tu and two of her team members offered to test the medicine on themselves before testing on human patients. It turned out that qinghaosu was safe and all patients in the test became well. Gradually, the World Health Organization (WHO) advised people to use qinghaosu as the first- line treatment for malaria. It saved millions of lives around the world.

In 2015, when Tu won the Nobel Prize in Physiology or Medicine, she didn't accept all of the honor. Instead, she praised her team members and Chinese traditional medicine. She once said," Every scientist dreams of doing something that can help the world."