Natural sites and historic buildings,when left alone,can slowly be in bad condition.{#blank#}1{#/blank#}For these reasons we must protect them.

    “World Heritage" is the title given to places chosen from natural sites and buildings around the world. These places are considered special,valuable and require protection. They may be places of nature or cultural heritages that are the pride of the people in the country{#blank#}2{#/blank#} Each is a treasure of our planet that must be protected for us and our future generations.

    Even extremely beautiful natural environments can be in bad condition if they are left alone{#blank#}3{#/blank#}For instance,the Galapagos Islands are now protected by rules that stop people from bringing or removing plants and animals to or from the islands, moving rocks and touching the animals. In the US,people are not allowed to visit Grand Canyon National Park by vehicle. It aims to protect the park's environment from the gas produced by cars{#blank#}4{#/blank#} Australia is making stricter laws to prevent agricultural chemicals from flowing into the ocean near the Great Barrier Reef. Efforts are also being made to protect Natural Heritage sites in Japan. In Shiretoko,only a small number of people are allowed to walk on its nature path at the same time{#blank#}5{#/blank#}

A. They may also be home to endangered species（物种）．

B. Today there are 183 Natural Heritage sites around the world.

C. People can change these places too,just as the wind and rain can.

D. Natural Heritage is valued for geographical characteristics and beautiful scenery.

E. That's why measures are being taken around the world to protect them.

F. It can reduce the risk of people accidentally stepping on valuable plants.

G. There are even security guards there who can arrest people that break the rules.

    You're growing up. That means you're probably experiencing changes, all at once. Your body is changing. It might even seem as if your entire self is changing. It can be confusing and even scary. {#blank#}1{#/blank#} And it's good!

    Growing up means that you can do more, learn more, and start to make your mark on the world. In order for that to happen, your body produces chemicals called hormones that help both body and mind grow. Hormone levels change constantly, rising and falling.

    {#blank#}2{#/blank#} But it's partly to blame for intense emotions, surprising reactions, and mood changes.

    Because of the way your brain develops, it is somewhat ruled by emotions now and through your teen years. As a result, growing up can seem like an emotional roller coaster (过山车)!{#blank#}3{#/blank#}

    Take care of yourself. If you eat right, sleep enough, and get good exercise, your brain will be much more able to deal with the stress.

    {#blank#}4{#/blank#} When you feel your moods changing or you're upset, or confused, some quiet time will allow you to gather your thoughts and get calmer.

    Practise relaxing your body and deep breathing when you go to bed.{#blank#}5{#/blank#} Plus, when stuff happens during the day, you'll be able to calm yourself quickly with a deep breath or two before you react. Your body is changing.

A. Take a timeout.

B. Work out regularly to keep physically fit.

C. But the truth is, it happens to every teen.

D. This changing is needed for your body's development.

E. It will help you fall asleep and start the morning right.

F. Here are a few things you can do to make the ride smoother.

G. Usually, these feelings settle down when you realize what is going on.

    Not all people like to work but everyone likes to play. All over the world men and women and boys and girls enjoy sports.

    {#blank#}1{#/blank#} They help to keep people healthy and feeling good. When they are playing games, people move a lot. This is good for their health. Having fun with their friends makes them happy.

    {#blank#}2{#/blank#} In small towns, crowds meet to watch the bicycle races or the soccer games. In the big cities, thousands of people buy tickets to see an ice-skating show or a baseball game.

    {#blank#}3{#/blank#}What are your favorite sports now? You probably play the games that people in your town or city play. {#blank#}4{#/blank#} Then swimming is probably one of your sports. Boys and girls in Australia love to swim. There are wonderful beaches there and the weather is good for swimming. {#blank#}5{#/blank#} Then you would like to ski. There are many skiers in Austria where there are big mountains and cold winters. Does it rain often where you live? Then kite flying would not be one of your sports. It is one of the favorite sports of Thailand.

A. How many sports do you like?

B. What's the weather like?

C. Is the climate hot where you live?

D. Or do you live in a cold climate?

E. Many people enjoy sports by watching others play.

F. What games have you played?

G. Sports help people to live happily.

How Laughing at Yourself Makes You Attractive

    Have you ever embarrassed yourself in public and got laughed at for it？{#blank#}1{#/blank#} And it's okay — we should even have a laugh about them.

    Laughing at yourself means accepting who you really are. You may feel bad about yourself because of past misfortune. However, it's normal to be imperfect. What's important is that you should be honest with yourself about who you are. {#blank#}2{#/blank#} You won't be able to laugh at yourself without self-acceptance.

    Laughing at yourself helps increase your confidence. When you're able to stay optimistic and laugh at yourself, you are likely to be more successful in life. {#blank#}3{#/blank#} More importantly, it helps you realize your own weaknesses, so you know which areas to do better in.

    {#blank#}4{#/blank#} Laughing at someone else may hurt their feelings even if you didn't intend to, while laughing at yourself does not. You might even bring a smile to their faces. Don't worry about losing respect from others, because people actually appreciate it when you laugh at yourself. Laughing at yourself shows that you have the courage to do so and you're being real about your imperfections, making people think you are likeable.

    Just remember that humans all make mistakes. So instead of blaming yourself, try to think of your mistakes, in a positive way and accept yourself just as you are. {#blank#}5{#/blank#}

A. Laughing at yourself makes you popular.

B. Accept yourself despite your imperfections.

C. You should try to understand yourself better.

D. Chances are that we all have these kinds of experiences.

E. Laughing at yourself changes an ideal image of yourself.

F. Learn to laugh at yourself and you will be more attractive.

G. This is because laughing at yourself helps lift your mood in face of difficulties.

    To someone stuck in a traffic jam, the ability to fly right over other cars seems like a dream. {#blank#}1{#/blank#} That may be changing. Nearly a dozen companies around the globe are competing to be the first to develop a flying car. One of the ideas being developed is a car with wings that unfold for flight. But, most aren't cars at all. They are more like helicopters and are operated by a battery-powered motor.

    {#blank#}2{#/blank#} Companies have to convince the government that the flying cars are safe. They will also need longer-lasting batteries. And, cities will have to figure out how to handle thousands of flying cars in the sky.

    Still, some companies are moving forward. {#blank#}3{#/blank#} Especially as cities grow more crowded and people spend more time stuck in traffic. These taxis would deliver passengers to the rooftops of office buildings during rush hours.

    "In as little as 10 years, products could be on the market that revolutionize urban travel for millions of people," said Zach Lovering. He is the leader of a project to develop a self-flying taxi for Airbus, a European company that makes airplanes. {#blank#}4{#/blank#} Although Uber doesn't have any plans to develop a flying car itself, the company is advising several companies that are developing them.

    {#blank#}5{#/blank#} Designers think that if enough people want to buy them, prices can be kept affordable.

A. Some flying cars are designed for human pilots.

B. It's still unclear how much flying cars will cost.

C. They see a need for "air taxis" and personally owned flying cars.

D. Companies will also have to get permission from the government.

E. The Uber ride-share company sees air taxis as the future of on-call transportation.

F. Inventors and business people tried to make flying cars, but have never been able to.

G. There are many challenges that could keep flying cars from becoming part of everyday life.