Most people are very familiar with the traditional cars being driven by burning fuel. And many have heard of electric cars,     1     are kind to the environment, but few people know about Tesla.

Tesla is a world-famous brand of an electric car made by Tesla, Inc.,     2     (devote) to the design and production of high quality luxury electric cars. Now it has become     3     second name for the electric car.

Tesla electric cars are     4    (wide) considered as the safest, the most luxurious and fashionable cars. They are free of pollution; they are quick     5     (speed) up and quiet to travel in. Furthermore, they’re easy to drive and comfortable to sit in. Their     6     (big) advantage is that once charged, they can travel as far as 500 kilometers.

Like many other new energy car makers, Tesla also     7     (come) across many barriers(阻碍) in terms of technology in the beginning, but they didn’t give up. They overcome the     8     (difficulty) one by one and eventually produced the first Roadster(跑车) successfully in 2008.

2010 was no doubt a vital year     9     Tesla, in which the company was successfully registered on the NASDAQ stock exchange(纳斯达克股票交易市场). Today, Tesla electric cars     10     (sell) all over the world. Most of their owners are buyers who are rich and crazy about protecting the environment.

6 . The first time my parents watched me compete in a mountain bike race, they tried to get me to quit. While I was riding down a hill, I hit a huge rock, flew through the air and crashed to the ground. However, this kind of thing happens all the time. I just got up as fast as I could, got back on my bike and kept going. And I won that race, despite taking quite a spill!

My earliest bike memories are of my father taking me out for rides in the child seat on the back of his ten-speed. A couple years later, I got my first bike. But my parents wouldn’t let me ride more than a few blocks from the house until I was ten. The morning of my tenth birthday, I got my older sister to take me on a long ride. We ended up at my aunt’s house. I was totally exhausted and every muscle in my body ached. But I didn’t care. I knew that this was only the beginning, and all I could think about was where my next trip would take me.

When I was in the eighth grade, our gym teacher, Mr. Raines, sent out a flyer about starting a mountain bike club. I ran to his office between classes and signed up. Over the next few months, the ten of us who joined the club worked on our biking skills. Besides taking us out riding, Mr. Raines taught us about bike safety, and showed us how to properly maintain and repair our bikes. He also helped us form a mountain bike team. At first, we competed against each other. Later, we went up against other schools. We continued to train and compete all through high school.

Biking has been the major focus of my life. Those early trips on the back of my father’s bike got me started. The long rides with my sister increased my enthusiasm. Then, the training and competitions in the bike club guaranteed that I would turn into a lifelong bike fan. I think everyone should have a hobby like this－something that is good for them and makes them happy.

8 . I got my first bike when I was nine years old. Jimmy, the bike, was my first love. I rode it everywhere. The suburb, the back lanes, the fields and forests, the river paths and swampland were far more exciting than any adventure novel or television series.

There’s nothing quite like the relationship between a child and his bicycle and the endless happiness two wheels and a pair of strong legs offer. No video or computer game can replace the liberation of being alone on a bicycle.

As parents, to deny children the simple pleasure of riding a bike is a failure of our responsibilities to raise independent and stable young citizens. We should offer our children a healthy alternative to hours in front of an addictive screen. Studies have shown that cycling promotes not only muscle growth but brain growth. Guess which country has children with the best mental health outcomes and is regularly the top of listings of the happiest young people. No surprise it’s the Netherlands, the unquestioned leader among industrial countries in encouraging bicycle use.

Our dependence on cars has degraded the public transport system, polluted our sky, led to the untimely death of thousands every year, and denied children safe access to their suburbs. A recent study found that 69% of children were accompanied to school. The same study found that a similar number of parents drove to work.

In some regions of Japan, when children start their first year of school, parents are expected to walk with them for the first few weeks, introducing them to residents and shopkeepers along the chosen route, letting the community take care of these children. However, driving children to school is proscribed. Children can choose to ride a bike or walk to school after they are familiar with the community, and it’s the community’s role to keep them safe.

Therefore, I strongly advise the government to provide better infrastructure (基础设施). Build separated cycle lanes, decrease speed limits, and design street scapes that favour people over cars. The results will be less pollution, quieter suburbs, a healthier population and, best of all, happy and independent children.