You might think that Olympic athletes are the healthiest people in the world. It's true that many are. However, it's also true that many Olympic athletes had to overcome (克服) illness early in their lives.

    One excellent example is Wilma Rudolph. She competed in track-and-field (田径) events in the 1960s Olympics. She didn't win just one gold medal (奖章).She won three. At the time, people called her ”the fastest woman in the world”.

    Actually, as a young child, Wilma could not take part in sports. She had serious illnesses, and then, at the age of 4, she got polio (小儿麻痹症).She lost the function of her left leg, and the doctor said she could never walk again.

Wilma's family did everything they could to help her walk again. Wilma and her mother used to travel 100 miles to get treatments for her leg. Her brothers and sisters took turns to give her leg a daily massage (按摩).Four times a day, they helped her do special exercises for her leg. Amazingly, by the time Wilma was 9 years old, she was able to walk again. Before long, she started playing basketball and running. In high school, she was a track star and then she went to the Olympics.

    Wilma stopped being a runner when she was 22 years old. She then became a teacher and a track coach. Her story encouraged many people to work hard and to overcome difficulties.

D

    Lisa likes going shopping very much. She often goes to clothes stores with her classmates on weekends. One day she sees a colorful sweater in the Fashion Clothes Store. It's a red-blue-yellow sweater. There is a card on it. It says 80 yuan. Lisa goes home quickly and collects(搜集) all her money. But she feels sad. She's only got 65 yuan.

    After two weeks, the Fashion Clothes Store has sweaters at very good prices——only 80%. Lisa thinks she can buy the sweater with 64 yuan. When she sees the card, it says 100 yuan.

    Some weeks later, the store says their sweaters are on sale. You can only pay(支付) 50% for the sweater. Lisa thinks she can get the sweater this time, because it only costs 40 yuan. But when she sees the card, she is very angry. It is 160 yuan.

Hi! My name is H﹣1. I am a robot（机器人）from Germany（德国）. I am a special robot. I am different from other robots. Look at my body. I have artificial skin（人造皮肤）

Scientists（科学家）put more than 13，000 sensors（传感器），I can feel the environment around me. I can feel hot on a hot day. I can feel cold on a cold day. I have some other feelings. I can even feel pain. 

Robots can help people do lots of things. Some robots can help people with housework. Some robots can do jobs in factories. I'm a robot and I'm a good helper like other robots. I water the flowers every morning. And I cook dinner every day. I'm also a good friend of my owner（主人）. For example，I can give my owner a hug when he or she feels sad. I can also help my owner's son，with his homework. 

Do you want to have a robot like me？

The Big Stone River is one of the most amazing stone rivers in the world. 

The Big Stone River is the most interesting sight（景象）of Taganai Park in Russia. Different from other rivers, it is filled with rocks and stones. Not a drop of water can be seen. Interestingly, as one comes near to the rocky river, the sound of running water can be hear rocks fell down from the mountains slowly and made the river of rocks. 

The Big Stone River is about 6 km long and is made up of many small rocky rivers. It cuts through a thick forest like a real river. It is about 200 meters wide and in some places, it is up to 700 meters wide. Some of the rocks weigh up to 10 tons each and the layer（层）of rocks goes down 6 meters deep. 

Scientists believe it is the consequence of the movement of glaciers（冰川）about 10,000 years ago. At that time, ice covered the top of the mountains. As time went by, the ice turned into water. The Seeing the amazing river is a great experience. The best way to experience this natural wonder is from above. Come and visit it when you come to Russia.