Here is a story: A man sees a butterfly (蝴蝶) . The butterfly tries to get out of its chrysalis (蛹) . F{#blank#}1{#/blank#}sorry for it, the man decides to help. He cuts the chrysalis and the butterfly comes out e{#blank#}2{#/blank#}. Surprisingly enough, the butterfly is unable to fly. If the butterfly doesn't struggle (挣扎；奋斗) to leave the chrysalis, it can't fly！The struggle develops the e{#blank#}3{#/blank#} in the butterfly which makes it fly. Similarly, the challenges of life bring out the best in young people and make the fly.

When people are young, meeting and overcoming challenges will make them s{#blank#}4{#/blank#} and ready to face life.

When we look at successful people, we see that the most successful of them are people who have had to struggle.

One famous businessman, who now o{#blank#}5{#/blank#}many big supermarkets, used to carry clothes on his back and sell them from door to door when he was young. Another successful man is Dennis. His father died when he was only twenty. He had to b{#blank#}6{#/blank#}up a big family. He took up the challenges and overcame them. Today his brothers and sisters are leading s{#blank#}7{#/blank#} lives.

Sometimes challenges do not appear to us because we keep away from them. So, some parents and teachers actively encourage young people to face challenges. They might organize some a{#blank#}8{#/blank#}for young people which provide them with challenges, like rock—climbing, camping, volunteer work and so on. However, just passing exams will not prepare a person for life. We must meet and overcome challenges. The young people of today will become the leaders of t{#blank#}9{#/blank#}. For countries to continue to become successful, it is i{#blank#}10{#/blank#}that the young people learn to meet challenges and overcome them.

You will probably know the feeling—it is time for school, but your eyes are only half-open. Your arms and legs are heavy and your brain is still asleep. So what can you do to stay awake when you are tired? {#blank#}1{#/blank#} 

Eat breakfast

Breakfast is the most important meal of the day, but it is also the easiest to skip（省略）. Start your day off with a healthy breakfast. {#blank#}2{#/blank#} They can keep you from feeling hungry and tired in the morning. 

Use water

When you are tired, water is your friend. {#blank#}3{#/blank#} It is even better than drinking lots of coffee. Coffee is fine in the morning, but it is best to drink water after lunch to make sure you can get to sleep. 

Get moving

 {#blank#}4{#/blank#} A few minutes of physical activity can improve oxygen circulation（氧循环）and keep your body active. It doesn't need to be anything difficult. A few push-ups and a short walk may be a great help. 

However, there is still something that you can't do when you are tired. {#blank#}5{#/blank#} Besides, if you find you are often feeling tired and you are not sure why, it is a good idea to speak to a doctor. 

If you're hungry, drawing a picture of a hamburger will not make you feel full. However, thanks to a new product from a Japanese printing company, you can eat the paper that you draw on!

Moeka Hoda and Kanako Murakami work for this printing company. Not long after the two had joined the company, they took part in a project. They were asked to find a problem that people always meet with and then try to solve it.

Hoda and Murakami searched the Internet for ideas. One complaint (抱怨) caught their eye. "We're not allowed to eat anything during class," wrote one student. "Whenever I get hungry, my stomach makes a big noise!"

To help people with the same problem, Hoda and Murakami made a special set of notepads and pens. They used paper made from potato starch (淀粉), oil and water. The pen's ink was made from water, citric acid (柠檬酸) and coloring.

The two young men posted a video of their products on the Internet. To their surprise, many people liked it. Soon, the company started selling these notepads and pens. Within three weeks, more than 500 sets were sold. Hundreds of customers have probably already eaten these!

    Jane has a lot of good habits. She {#blank#}1{#/blank#} exercises in the morning. She often eats vegetables and fruit. She {#blank#}2{#/blank#} ever eats sweet food. Her teeth are good and she never needs to go to see the {#blank#}3{#/blank#}. {#blank#}4{#/blank#}, she has some bad habits, too. She often watches TV for {#blank#}5{#/blank#} than two hours a day. And she spends {#blank#}6{#/blank#} all the weekend time reading {#blank#}7{#/blank#} for fun and doesn't do her homework. {#blank#}8{#/blank#} of her family are happy with her because the results of her tests are often less {#blank#}9{#/blank#} 60 {#blank#}10{#/blank#}. Jane decides to change(改变) from now on.

Good and bad manners（礼仪） make up the social rules of a country.They are not always easy to learn because they are often not written in books.Let's see some social rules in Britain.

In the past，most British women didn't go to pubs（酒吧） because it was not considered good behavior for a woman.Now both women and men can drink freely in pubs.

Visitors to Britain often see British people wait in line in public places.It is considered impolite to get on a bus without waiting your turn in line.And if you don't wait your turn，the other people in line will probably warn you to line up loudly.

In some countries it is considered bad manners to eat in the street.However，in Britain it is common to see people having a snack while walking down the road.

British people used to be surprised to see young children in restaurants in the evening because children were not usually taken out to restaurants at night.These days children are playing a more active role and they are now accepted in many restaurants at night.

In recent years，many British companies have banned smoking in their offices and even in the whole buildings.Smoking is also banned on the London Underground，in cinemas and theaters and on most buses.It can be seen less and less in public places.It is also considered bad manners to smoke in someone's house without asking the owner.

Social rules are an important part of every country.The British have an expression for these"unwritten rules"：When in Rome，do as the Romans do.

What would life be like if you were a rocker, a soccer player, a professor(教授）at Stanford University, and a Nobel Prize winner? Carolyn Bertozzi from the US lives such a cool life!

Bertozzi, 56, wins this year's Nobel Prize in chemistry and becomes this year's only female(女性) winner in science and the eighth female to receive the chemistry prize in history.

Bertozzi won the prize for studying the sugar coats of cells(细胞）. She has found a smart way to connect cells together. This finding helps to develop better tests for serious diseases like cancer.

However, Bertozzi said she only fell in love with chemistry until her second year at Harvard University."Most of my classmates thought the class was very difficult. But I liked it a lot because in my eyes the problems were challenging even though it usually took me long hours to solve them."

Besides doing science studies, Bertozzi has lived a colorful life. She was a keyboarder in a rock band and she also played soccer, winning an athletic scholarship from Harvard.

Moreover, Bertozzi never forgets her job as a female scientist. "In the late 1980s, only 10 percent of the students were females," she told Chemical & Engineering News. "There were maybe only one or two females in a lab, so we tried to support each other by starting a monthly get-together. Now, I'm so glad to see more and more females taking part in science." In 2022, Bertozzi won an award from the American Association for the Advancement of Science for her work to increase diversity(性别多元）in science.