Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.

Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person's hands and eyes work together, controls the left hand. The left side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.

No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.

Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.

Can you imagine a day without technology? In the last decade(十年), computer technology has become {#blank#}1{#/blank#}(广泛地) available and has rapidly made life more convenient. Nearly everyone keeps {#blank#}2{#/blank#}(他们的) smartphones close at all {#blank#}3{#/blank#}(时候). This {#blank#}4{#/blank#}(通常) comes with many benefits compared to traditional ways. For example, you can keep in {#blank#}5{#/blank#}(接触) with friends easily and access(获取) maps, news, {#blank#}6{#/blank#}(天气), {#blank#}7{#/blank#}(温度) and facts {#blank#}8{#/blank#}(任何时候) you want. However, there are also some negative aspects(方面). Digital devices and social media platforms are so addictive(上瘾的) that many {#blank#}9{#/blank#}(年轻的) people struggle to control how much time they spend {#blank#}10{#/blank#}(使用) them and they become {#blank#}11{#/blank#}(劳累的) because of that. If you're one of the addicts, don't {#blank#}12{#/blank#}(担心), it's time for you to go for a digital detox (数字排毒).

A digital detox is a {#blank#}13{#/blank#}(极好的) practice in the information age to help people stay away from {#blank#}14{#/blank#}(科技) for a period of time. It can be different for every person. Some people like {#blank#}15{#/blank#}(走) into nature and leave home {#blank#}16{#/blank#}(没有) their phones. {#blank#}17{#/blank#}(然而) others prefer to set strict limits on how and when they use technology. The purpose is just to {#blank#}18{#/blank#}(警告) people to be mindful(留心的) of how much time we spend looking at screens.

Doing a digital detox can be very helpful. Most people {#blank#}19{#/blank#}(认为) that they get better sleep and {#blank#}20{#/blank#}(醒来) up happily when they aren't exposed(暴露) to the bright light of the phone screen. Many also find that they have some {#blank#}21{#/blank#}(微小的) changes when they aren't comparing {#blank#}22{#/blank#}(他们自己) to others on social media. And of course, if you can {#blank#}23{#/blank#}(扔) away your phone for a while, you will have a lot more time for other valuable {#blank#}24{#/blank#}(事情), such as {#blank#}25{#/blank#}(旅行) {#blank#}26{#/blank#}(一起) with your families, {#blank#}27{#/blank#}(拜访) your old school on {#blank#}28{#/blank#}(周末). Enjoy the days without smartphones.

When I was a child, I was shy, quiet and fat. And that made me never get on with any friends around me. Almost no one used to talk to me or invite me to parties. I always lived in my own world.

What was worse was that someone always bullied(欺负) me, even my closest"friend".One day after school, an older boy kept calling me"Fat Boy"all the way home on the bus. I was shy and afraid, and wanted to cry. At that time, I hoped my best friend sitting behind me might stand up to help me. However, he jumped up and also laughed at me. You must know how I was feeling then!

And later I became older and got to know what I should do. I started exercising more and eating less. And I kept working hard to get better grades at school. Just half a year later, I was much thinner and healthier. And I was a top student in our class too. Quickly, I became one of the most popular students at school.

Being fat isn't a crime (罪过). However, you can't stop other people from laughing at you. So you must do something to help yourself. Remember that only you can bring yourself hope and success.

The Incredibles is a cartoon movie about superheroes with huge power. However, it still feels like a film about ordinary people. The movie is about a superhero called Mr Incredible. He is very strong, and he can save people from danger.

However, 15 years later, Mr Incredible and other superheroes have to give up their"Hero work" and live a common life. Then Mr Incredible becomes " Bob Parr" and starts working for a company.

Just before he becomes "Bob Parr", Mr Incredible marries another superhero "Elastigirl", and later she becomes " Helen Parr". Together they create a family and have three children—Violet(daughter), Dash(son)and Jack(baby). They also have super power. The parents ask their children not to use their super power.

Bob finds it very difficult to live the life of common person. He misses being a superhero and helping other people. One day a secret government department asks him to do some hero work. Bob is happy to do so. Unluckily, Bob soon finds himself in deep trouble. However, with the help of his superhero wife and children, he is able to fight back and again, the good beats the bad.

Do you yawn? There are about 20 reasons that scientists think are possible for yawning after research. They do not know exactly why yawning happens, but they do know many facts about yawning.

We know that everyone yawns in the same way. First you open your mouth slowly. Your mouth stays open for about five seconds. You take in a lot of air and then push it out. Then you quickly close your mouth. We also know that yawning is contagious. When you see someone yawn, you yawn, too.

Many people say they yawn because they are bored or tired. That might be true. People do often yawn before they sleep and after they wake up. However, we know that people also yawn when they are excited or nervous. Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn could help a warm brain cool down.

Some scientists believe that yawning makes you notice things more quickly. When you yawn, you breathe deeply. You also stretch（伸展）the muscles in your face, mouth, and neck. Your eardrums stretch, too. Maybe this helps you to be quicker to notice things.

In some countries, people think yawning is not nice. People put their hands over their mouths to cover a yawn. In other countries, people think yawning is healthy. They think that opening the mouth very big can let good things in. When they breathe out, they think that bad things go out of the body with the air.

All in all, scientists do not spend much time studying yawning. That is probably because yawning does not hurt. It is just something we do.

提示词语：activity, celebrate, traditional food, true spirit of 

提示问题：• What's your favorite Chinese festival?

• What activities do you usually have during the festival?

• Why do you like it best?

写作要求：1. 内容积极向上，包含题目所有要点信息，可适当发挥以使行文流畅。

2. 结构完整，语句流畅，条理清晰，语法正确，表达规范，书写工整。

3. 不得出现题目以外的人名、地名、校名及其它透露个人信息的名字。

4. 词数80左右(短文首句已给出，不计入总词数)。

Dear Clara,

I'm very glad to know that you take great interest in traditional Chinese culture. Now let me tell you something about my favorite Chinese festival.

Yours,

Li Hua