What is bitcoin?

    Bitcoin is a kind of digital currency, which means it doesn't exist as banknotes. At first, bitcoins were only made for collectors. {#blank#}1{#/blank#} You can store it in an online “wallet”. And with that wallet, you can spend bitcoin online and in the physical world for goods and services. More and more businesses, restaurants and universities included, accept payments in bitcoins. And, of course, bitcoin has a valuation, which you may have heard about because bitcoin's price has fluctuated up and down.

    What's different about bitcoin?

    {#blank#}2{#/blank#} That card is connected to information about you, such as your name and billing address. You can use bitcoin the same way, but unlike with a credit card, the trades you make with the currency are completely anonymous（匿名的）. They can't be used to identify you personally. {#blank#}3{#/blank#} Is that why the WannaCry attackers picked it as a form of payment?

    {#blank#}4{#/blank#}

    The bitcoin currency is unique—no authority can change the value. It's quick and easy to set up a bitcoin account. It's fast—it only takes a few minutes to transfer your payments. {#blank#}5{#/blank#}

    Possibly, Bitcoin has certainly gained fame in the news media as a technology that can result in crime. But even though the identities of people in a bitcoin trade may be hidden, the public ledger has increasingly helped law trace the movement of bitcoins from place to place.

A. What makes the bitcoin currency unique?

B. Another way of exchanging g bitcoins is at ATMs.

C. So you can use bitcoin to protect your privacy.

D. It's cheap—trade fees are usually zero, or less than 1 US cent.

E. Usually, if you pay for something on the Internet, you use a credit or debit card.

F. However, you can buy it with dollars or euros,, just like you can trade any other currency.

G. The bitcoin was introduced on the internet in 2008 by a software developer called Satoshi Nakamoto.

                                                                                    How Can I Fight Laziness?

    Lazy people will never gain anything in life. However, laziness can be defeated once a few changes have been made in your mind.

    {#blank#}1{#/blank#}Many people lack sleep constantly, since they stay up too late and get up too early to prepare for work. These people have little motivation once they arrive home. Laziness works hand in hand with a lack of motivation and a tendency to put off things. By adjusting your sleep schedule to provide a few more hours of meaningful rest, you can fight laziness throughout the day.

    Another way to fight laziness is to change your mind from passive to active. Some people treat their lives as if they were pushed from task to task. Others take a more positive approach, viewing each task as a challenge they must overcome alone.{#blank#}2{#/blank#}

    Some people fight laziness by removing the temptations(诱惑) that surround them. A television in the living room may provide entertainment, but watching too much TV often contributes to laziness.{#blank#}3{#/blank#}Complete a few tasks and reward yourself with a good dinner.

    Laziness can also be a lasting problem at home. Couples and children may all have different energy levels, but laziness can be spread if not dealt with immediately.{#blank#}4{#/blank#} Be the first to collect and wash dishes after a meal. Others in the home may eventually follow your example and perform their own task. It is difficult to practice laziness when you are surrounded by motivated people.

    {#blank#}5{#/blank#} Enough exercise and a balanced diet can help you to develop a healthy lifestyle, thus enabling you to have more energy and help lift your spirits.

A. To fight family laziness, set an example.

B. Knowing how to fight laziness is important.

C. One way to fight laziness is to get enough sleep.

D. Finally, taking exercise regularly can help you fight laziness.

E. With strong determination, you will be able to achieve your goal.

F. Laziness appears when you no longer feel in charge of your own mind.

G. Create a reward system for yourself, just as parents do for a child.

    Children who have developed leadership skills are sure to have a bright future.{#blank#}1{#/blank#}Not only will they gain more self-esteem and interact more easily with their peers, they can also make an impact on their community. These qualities will continue to develop as children grow up. Here are simple techniques to develop children's leadership qualities.

    Discuss peer pressure. Children are often exposed to peer pressure and worry about how others view them.{#blank#}2{#/blank#}Leadership requires being socially involved, but still honoring personal morals and standards. Discuss hypothetical (假设的) peer pressure situations and ask kids to consider how they'd behave in different situations.

    {#blank#}3{#/blank#}When they're able to clearly show their thoughts, they feel more self-confident and are able to deal with complex problems. You can help by encouraging children to speak out and by listening seriously to their thoughts. Although many children go through rebellious stages, don't enforce silence. Instead, suggest self-expression.

    Teach by example.{#blank#}4{#/blank#}Even if they don t express it aloud, children may see you as a role model. Model leadership behavior by helping others, volunteering in leadership positions and taking action in everyday life.

    Develop children's individual talents and encourage participation. Every child has potential for leadership skills, but not every child develops skills in the same way.{#blank#}5{#/blank#}A child might be a talented athlete or skilled at painting and drawing. Find ways for kids to develop these skills in a group setting, which promotes teamwork and social skills.

A. Encourage children to express themselves.

B. Pay attention to specific interests and abilities.

C. Find volunteer and community service opportunities.

D. Children start benefiting from leadership skills at any age.

E. Children with self-awareness have a greater ability to lead.

F. Children observe the adults in their lives, and value what they see.

G. Talk with your children about the importance of avoiding peer pressure.

    Last summer over 12,000 fans were at Wembley Arena in London, shouting and cheering. Thousands more were watching online. {#blank#}1{#/blank#} It was esports, or competitive computer gaming.

    Millions of people in the UK play computer games for fun. Some of them have become professional gamers, playing games as their full-time job. {#blank#}2{#/blank#} They practice for ten or more hours a day, five or six days a week. They do exercises like typing something and trying to type it faster and faster. They also study videos of other players and plan ways to beat them.

    {#blank#}3{#/blank#}Are players athletes? Some say no. Esports players don't need to run, jump, throw or do big physical actions. At the moment, the UK government classifies esports as kinds of games, not as sports.

    But others say yes: esports are sports. Players do need some physical skills, especially hand-eye coordination, reflexes, accuracy and timing. If darts, snooker and shooting are classified as sports, then perhaps esports should be too.

    {#blank#}4{#/blank#}And they will be an official medal sport in the Asian Games starting from 2022. Next step: the Olympics?

    For many esports fans and players, though, the most important thing is that esports are growing in popularity and importance.{#blank#}5{#/blank#}

A. But this wasn't a football, basketball or tennis match.

B. All like playing computer games.

C. It's not easy being a professional gamer, though.

D. But are esports really sports?

E. It is certain that esports will come into the 2024 Olympics.

F. In fact, China and South Korea do classify esports as sports.

G. If esports are not as important as sports now, they definitely will be in the near future.

    {#blank#}1{#/blank#} You probably think you will never be a top student. This is not necessarily so, however. Anyone can become a better student if he or she wants to. Here's how:

    Plan your time carefully. When planning your work, you should make a list of things that you have to do. After making this list, you should make a schedule of your time. First set your time for eating, sleeping, dressing, etc. Then decide a good, regular time for studying {#blank#}2{#/blank#}. A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.

    Find a good place to study. Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room, free of everything but study materials. No games, radios, or television. When you sit down to study, concentrate on the subject.

    Make good use of your time in class. {#blank#}3{#/blank#} Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

    Study regularly. When you get home from school, go over your notes, review the important points that your teacher is going to discuss the next day and read that material. {#blank#}4{#/blank#} If you do these things regularly, the material will become more meaningful, and you'll remember it longer.

    Develop a good attitude towards tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won't end if you don't pass a test, so don't be over worried.

    {#blank#}5{#/blank#}. You will probably discover many others after you have tried these.

Be a Green Child

What does it mean to be green? "Green" is more than just a color. It also means taking special steps to protect the environment. Why green? Plants are green, and without them the Earth wouldn't be such a lovely home for us human beings. What can we do? {#blank#}1{#/blank#}

Reduce It!

{#blank#}2{#/blank#} For instance, a shorter shower means you use less water and less fuel since your house uses fuel to run the heater that warms up the water.

Reuse It!

Sometimes people call ours a "throwaway society". It means that we're always throwing away old stuff (东西) and buying new stuff. {#blank#}3{#/blank#} For instance, if your baby brother becomes older and loses interest in his plastic basketball hoop (篮圈), why not give it to another family who has a little kid?

Recycle It!

Recycling has never been easier. Many communities will pick it up right in front of your house and some towns even require it. Recycled goods go to a recycling center, where they can be turned into new cans, bottles, and paper.

Enjoy It!

It's true that rubbish and pollution are problems, but the Earth remains a huge and beautiful place that's ready for you to explore. {#blank#}4{#/blank#} Go for a hike, visit local nature centers and gardens, and climb up mountains.

But before you travel the globe, take a look at your own backyard. Is there a spot where you could plant a tree or put in a little fruit or vegetable garden? {#blank#}5{#/blank#}

A. Here's a four­step guide to being green.

B. Many times, even if you no longer need something, someone else just might.

C. You can start locally by visiting the naturally beautiful spots in your city.

D. Turn off the tap when you're brushing your teeth.

E. Get out there and get your hands dirty.

F. You can watch with pride as your tree takes root and your garden plants grow.

G. When you use less of something, you do a good thing for the Earth.