Everyone can be the best at something. Last week, a middle school in Beijing 

an activity called Guinness Campus （校园吉尼斯）to help students find their potential（潜力）. 

"There are all kinds of projects you can take part in and all kinds of records for you to set, " said ninth grader Lin Yan. "I chose 'Domino Tower' I have the most confidence in this. "

Students needed to a tower using dominoes（多 米诺骨牌）. Whoever built the tallest tower in one minute won. Lin set the record with 33 levels. "At first I didn't do it very well, but after trying over and over again, I found some ways to do it much , "she said. "The game requires you to be both calm and patient. If you lose your temper（脾气） when the tower , you may lose the chance to win. "

Seventh grader Wang Shuangqi set a record for the longest juggle（颠球） of a soccer ball with one foot. He did it for 4 and 34 seconds. "I have been practicing juggling for three four years, so I'm confident, "said Wang. "Juggling with only one foot needs balance and stability（稳定性）, and I'm talented it. "

When asked if he was afraid that someone would break his record one day, Wang said he was expecting that to happen. "During the activity, we keep reaching higher goals. If someone breaks record, I'll be even more encouraged to try harder, finding more potential with in me. "

A Cloud of Hope and Danger

    In 2050, a small cloud floats through the air in a hospital operating room(手术室). In the room a patient, suffering from cancer, lies on a table. The cloud surrounds (包围) the patient, her body and filling her lungs (肺). The cloud is not smoke or steam. It is made of millions of microscopic robots called nano-robots(纳米机器人). These tiny robots move from cell(细胞) to cell in the body, destroying the cancer cells.

    Fighting cancer with nano-robots is only an idea today, scientists say that it would be possible in the future. Using nano-robots for good purposes such as fighting disease or repairing the environment may be the to many of today's problems.

    However, nano-robots could be a risk as well. Since nano-robots are so tiny, they will have to work in large teams of many thousands to 'many millions. For this reason, nano robots will have to be programmed to build . Scientists will not have the ability to build millions of nano-robots one by one.

    This to reproduce(复制)is making some scientists worried. What if something goes wrong in the programming? Quite a lot of crazy nan-orobots would be far than any disease. Some people think that if they get out of control, nan-orobots could destroy the Earth.

    What should be done? Should we continuenan-orobots or should we search for other methods? This is one of the many difficult that we have to make in the future.

In August last year, Xiong Linghao did very well and a big prize in the 13th Shanghai International Youth Piano Competition. On August 28, a video clip(剪辑) of her playing the piano during the competition on the Internet, and in a few days, than 7,000,000 people watched it. When a newspaper reporter asked her she wanted to be in the future, she replied, "when I grow up, I wanted to be a . I hope to study music at a university in Beijing after high school."

"I can't see with my eyes, so I'd like to see the world music." added Xiong Linghao.

Xiong Linghao her eyesight when she was still a baby. So she couldn't live like a normal child. , she had a talent for music. At the age of 3, she could play songs on a small electric piano(电子琴). At 6, she started to take piano . From then on, she practices it hard every day.