Winston Churchill was: born: into-a famous family. His father was a politician (政治家). However, when Churchill was a boy, people thought him a slow learner in school.

Churchill was born with a stutter(口吃)problem. He even had difficulty in pronouncing "Dad" and "Mum" well. People around him, (包括) his classmates and friends, laughed at him. He didn't like his school life, and he (意识到)it was hard for him to pay attention to what the teacher said. Once, one of his teachers said angrily, "If you don't study hard, you can only depend on your father. He will (照顾)you all his life."

But little Churchill said (严肃地), "No, I'm going to be a speech-maker, and I... "Before he finished his words, his classmates burst into laughter. They thought that it was (不可能的)for Churchill to make his dream come true.

Little Churchill didn't (放弃), however. From that day on, he often looked at (他自己) in the mirror (镜子) and practised word by word, and then sentence by sentence. At school, he became active in class. He even asked to read the texts and often (设法完成) to express (表达)his ideas. (那时候), some students still laughed at him, but he didn't care.

(最终), his hard work paid off. Little Churchill made great progress in speaking. Several years later, the stuttering boy became an important person in the history of the UK. His speeches during the Second World War encouraged thousands of people.

Chris is not a traditional explorer—he usually works in an office for a large organisation. However, Chris's job can be just as exciting and dangerous as being an explorer.

Chris works for MSF, an organisation, also known as Doctors Without Borders. Since 1971, MSF has sent trained doctors all over the world to help people who suffered from disasters, such as wars and illnesses. Chris is a doctor from France who has travelled to many places to organise programmes that help people.

At the moment, over 27, 000 trained doctors have taken part in MSF projects. The organisation received the Nobel Peace Prize in 1999. All kinds of doctors can volunteer for MSF. They need to be ready to goal most anywhere in the world. Of course, they should face difficulties. Most of MSF's work is in Africa. When MSF chooses a doctor for a task, he or she has to go for at least six months. When doctors have completed a few tasks, they might be sent on an emergency task following a disaster, such as an earthquake.

But why would doctors leave a comfortable life and a good pay to join MSF? According to Chris, the experience they have is a great help in their life. What's more, just like the explorers of the past, they need to keep an open mind and learn to get on well with the people they meet. One thing that they can say at the end of any task is that they have made a real difference to people's lives.

Wang Mengqiu, the inventor of Hover Camera(无人相机), was born in Hangzhou in 1982. He once studied at Stanford University in the US. He became famous overnight because of the invention.

Forget selfie sticks(自拍杆)! Compared to other cameras, Hover Camera has many advantages.

●It can fly and stay in midair, track your face and even follow you to make sure it gets the perfect picture.

●It can be controlled by using a smartphone.

●It records movements with a 13MP camera and takes 4K video.

●It is the best choice for weddings, sports games and holidays.

Mr Wang also said, "The main design consideration is easy and safe to take for the users. It's very light and small. It can be folded(折叠)in two, so it can be easily put into a bag. When the power is low, it can land on the ground safely on its own. "

It's reported that the company put its first kind of Hover Camera, Hover Camera Passport, into the market in October, 2016. The price is $ 599, basically in line with (符合)the expectation.

At that time, he often me my English.

Teenagers should learn how to   themselves.

The old man  illness at the age of 86.