Sleep is something we all do. But some people need to sleep more than others. Babies sleep most of the time. Children in school sleep about ten to twelve hours a night. Most adults sleep only seven or eight hours. {#blank#}1{#/blank#}

    All parts of our bodies have to rest after they work.. Our arms need a rest after we lift heavy thing, When we run fast, our legs work hard. They get tired. We have to rest them. Our brains work hard, too. {#blank#}2{#/blank#}. We can sit quite still and rest our arms and legs. But our brains aren't resting. They go right on thinking as long as we are awake.

    Our brains slow down a bit when we sleep and dream. {#blank#}3{#/blank#} Instead of thinking wide-awake thoughts, our brains make up dreams. Some dreams are very pleasing. Some are not. Most of the time we forget them when we wake up.

    Scientists have tried to find out what would happen if people were not allowed to sleep. They asked some people not to go to bed. The people stayed up all night and all the next day. They stayed up the next night too, and the day after. They played games, but they made mistakes. They forgot things. {#blank#}4{#/blank#}

    The people grew rude and mean. They became angry with their friends. Finally they were too tired to stand up. When they sat down, they fell asleep.

    Scientists have found that if people are not allowed to sleep and to dream, they act in an unusual way. {#blank#}5{#/blank#} But we do know that we need it to stay well. So tonight have a good sleep. Lie down under the covers. Shut your eyes. Let your thoughts wander. Soon you'll stop thinking. You'll be asleep.

A. It was hard for their tired brains to work.

B. When we are awake, they help us pay attention to the world around us.

C. But babies, children, and adults — all of us need to have our sleep.

D. Good sleep helps to improve one's memory.

E. No one knows why sleep is so good for us.

F. But even as we sleep our brains are doing some work.

G. Of course you will have a good sleep.

    What will you do if you can't eat everything bought in the canteen? {#blank#}1{#/blank#} According to a survey, what students waste every year could feed over 10 million people.

    {#blank#}2{#/blank#} According to Xinhua News Agency, the food wasted by Chinese people is about 50 million tons of grain every year, which could feed 200 million people.

    Food waste, which has become a global issue, serves as a mirror that reflects various cultural and social issues in different countries. In the West, for instance, consumerism, the belief that it's a good thing to use a lot of goods and services, is often to blame for food waste. {#blank#}3{#/blank#} Chinese people are well known for being hospitable and generous. Many even feel that they lose face if their guests have eaten all the food. On campus, a generation of single children is less aware of the food waste issue. Students nowadays are well protected by their families and hardly have any concept of how much toil others go through in order to provide them with the food they eat.

    {#blank#}4{#/blank#} There are over 925 million hungry people in the world, most of whom live in underdeveloped countries and areas. They don't have enough food to eat. Many children die for lack of nutrition each year in some African countries. And farmers work very hard to grow the crops. {#blank#}5{#/blank#} It's also important that everyone should think about how they can do their bit to reduce food waste.

A. Students' waste is extremely serious.

B. China, in turn, features its own eating culture.

C. But canteen waste is extremely the tip of the iceberg.

D. Students can never realize the serious food crisis.

E. Compared with them, some live in a different world.

F. So there's no excuse that we should waste our food.

G. Most of us would simply throw away any leftover food.

How to Have a Successful Teenage Life

    Everyone dreams of success in their life, don't they? Even as a teenager, you can achieve success in your life; it really isn't that hard. {#blank#}1{#/blank#}

    Do well in school.

    No matter how boring it is now  education will help you be a productive member in society. Try your best for excellence in school; listen to the teachers, do your homework, study, and get good grades. Doing so will help you get into a better university, which will enable you to have a bright future. {#blank#}2{#/blank#}

    Do good in your community(社区).

    Volunteering can not only improve your community's status, but it could make you happier. Studies show that people who volunteer are less likely to develop depression (抑郁)than people who don't. {#blank#}3{#/blank#} For example, if you love animals, volunteer at an animal shelter. If you love helping the environment, plant trees or pick up litter. When you help others, it will make you feel better about yourself.

    {#blank#}4{#/blank#}

    Remember, they're there to help you be the best that you can be. Respect them and value their opinions, even if they annoy you sometimes. {#blank#}5{#/blank#} You don't get to choose your teachers or your family, but you still have to put up with them. Learn how to deal with people now, because when you're an adult, you don't get to choose your boss or your co-workers, so learn how to respect them now.

    These points can help you enjoy success in your teenage life.

A. Live life to the fullest.

B. School sets you up on the right track!

C. Be nice to your parents and teachers.

D. Find chances to do volunteer work that interests you.

E. It will help you pass time and develop your personality.

F. Here are some important points that you may find helpful.

G. Keep it in mind that they do the things they do because they care about you.

    Do you enjoy your work? Maybe you do or maybe you don't. Chances are that you fall somewhere in the middle: you have good days and bad days, and you could definitely be happier than you currently are.{#blank#}1{#/blank#}.

    Be Friendly to Your Colleagues

    In some big offices, people might not even say "good morning" to one another. {#blank#}2{#/blank#}. You might think that you have nothing in common with them, but if you strike up a conversation, you may well find that they share some of your interests, hopes or ambitions.

    Focus on How You're Helping Clients

    Some jobs are pretty tiresome — there's no way round that. Whatever you're doing, though, you're helping someone.

    Perhaps you work in McDonalds, helping customers who want a cheap, quick meal. Perhaps you do data entry, helping a big company to get their records organized so that they can take better care of their clients. In most jobs, you've got the potential to make someone else's day that bit better.{#blank#}3{#/blank#}.

    Do Your Hardest Task First

    Have you ever put off a difficult phone call or a high­pressure task for days and days, only to find it appears larger and larger in your mind? I've read a lot of productivity advice over the past few years, and something that almost all experts seem to agree on is that it's a good idea to get tough tasks out of the way as quickly as possible.{#blank#}4{#/blank#}. Plus, you'll constantly have that task hanging over you and dragging your mood down.

    {#blank#}5{#/blank#}

    Try eating at regular intervals — and go for healthy, tasty foods which make you feel energized rather than sluggish. Fresh fruit is a great snack option, or you can have dried fruit, nuts and/or seeds. Don't forget to drink enough water, too.

    These are all little, but significant, ways to be happier at work today. Put them into practice and you will feel inspired!

A.Eat Sensibly and Regularly

B.Eat Outside during Your Lunch Break

C.Here are several ways to be happier at work

D.The longer you wait, the more resistant you will feel

E.Doing that will almost certainly put a smile on your face

F.It costs nothing to be polite and friendly to your colleagues

G.Look for some small items to bring a bit of happiness into your day

Voluntourism

    Volunteering to help people in need combined with travelling to faraway places is a new trend in the travel industry. It is called voluntourism. People travel to other countries, learn languages and gain new experiences. {#blank#}1{#/blank#}

    Recent statistics show that in the past few years voluntourism has been one of the fastest-growing areas of tourism. More than 1.6 million people around the world are volunteers in other countries. They help build schools, assist in hospitals and do farming work in developing countries. {#blank#}2{#/blank#} They keep in touch with their host families after they return home, and many return to visit.

    There are many reasons why people want to engage in voluntourism. When people choose to join a voluntourism program, they are joining a global network of volunteers who are living and working with diverse cultures on projects that have a positive effect. The volunteers come from all over the world, and they will share the passion for giving back and the desire to broaden horizons. Some students also see it as a gap year after school, while others simply want to take time out from a job and do something else. {#blank#}3{#/blank#} However, many voluntourists do not see volunteering as what it is. They think it is a cheap way of travelling and don't really want to get involved in hard work.

    While voluntourism has been around for over a century, modern volunteering started with the Peace Corps, a program that the US government started in the 1960s. From then on, voluntourism has become more and more popular. Many organizations start similar projects. {#blank#}4{#/blank#} And they have hundreds of different types of programs for people to choose from in more than 30 developing countries. The programs run year round and each volunteer chooses when they want to start and the duration they would like to stay for.

    {#blank#}5{#/blank#} They say that if people really want to help those in need, there are many opportunities in their own community to do this. On the other side, volunteers are often not skilled enough for the tasks that they do. Travel experts point out that in some cases voluntourists are often taken advantage of by the organization that sets up the trips.

A. Not everyone sees voluntourism in a positive way.

B. Some of them establish lasting bonds with people there.

C. And there are those who are bored and merely seek adventure.

D. Most voluntourism organizations employ people from similar fields.

E. They find it is the best way to get the best of the world.

F. By participating in voluntourism, they are contributing to local economy.

G. They offer voluntourism trips to suit people's interest, experience level or age.

    This summer, when earthquakes rocked Southern California on back-to-back days, it was a close-to-home reminder that we may one day experience the "Big One," a quake with the power to kill and destroy. A few people, however, saw something else: a photo opportunity. Tourists poured to a large crack in a highway to see evidence of the damage for themselves and, of course, take a quick selfie.

    {#blank#}1{#/blank#} It feeds so many of the weakest parts of ourselves: our born attraction to images of human faces instead of landscapes or objects, our interest in capturing memories, and yes, our need for social approval. Yet, it is easy to feel uncomfortable with selfies and even laugh at them, especially when they are risky or in bad taste. So why do we take selfies?

    Selfies have become so common that my grandma does them when we get together. {#blank#}2{#/blank#} Instead, selfies are a way for us to connect and communicate, and feel a more personal connection with people all around the world.

    In one example, researchers developed a #ScientistsWhoSelfie campaign studying how scientists posting photos of themselves with their work on social media influenced public opinion of the profession. {#blank#}3{#/blank#} "Those scientists in general were described as warmer, but no less competent," said Paige Jarreau, the lead author on the study.

    While some scientists refused at first, fearing that their colleagues would consider them self-centered or think they take their work less seriously, those concerns disappeared once researchers explained that it could help build public trust. "This is not just me taking a duck-faced (嘟嘟嘴) selfie or trying to look cute on camera," said Dr Jarreau. "This is me being able to better tell the story about my science in a way that helps people trust me."

    {#blank#}4{#/blank#} Dr Jarreau recalled a road trip she made to national parks, where she witnessed so many people taking selfies, she began taking photos of the selfie-takers themselves. "Ask yourself: Why are you posting that picture?" she said. "If there was a platform that didn't enable likes, would you post it?" After all, there are other ways to develop a social connection. You could send the photo to a private group. You could put it in a frame at home. You could be mindful in the moment by not taking it at all. {#blank#}5{#/blank#}

A. But if you do, watch your step.

B. There is no denying the draw of the selfie.

C. With each like, we feel better about ourselves.

D. The thought that selfie is the symbol of self-love is outdated.

E. However, most of us post mechanically, even madly, in our daily lives.

F. After all, people have been making self-portraits for long, in remarkably similar ways.

G. They found that photos with human faces helped improve impressions in a field that is often subject to negative stereotypes.