On a summer day in 1948, a Swiss (瑞士的) man named George de Mestral took his dog for a walk in the mountains. After they came home, George discovered that he and his dog were both covered with burrs (带芒刺的小果实).
As an engineer, George naturally began to wonder how exactly the burrs stuck to his dog and his clothes. Then he paid careful attention to looking at them under a microscope (显微镜). He found that the burrs had very tiny hooks (钩子), which allowed them to catch on to things like clothes. George realized that he could use this finding to create a new way to fasten (扣紧) things.
As so often, it is a very long journey from the first idea to the final product. It was easy to find materials that could stick together, but finding materials that would continue to do so after years of use was not easy. George tested a very large number of different materials and production methods. After years of research and work, he invented what is known today as Velcro (魔术贴). In 1955 George started Velcro Industries to turn his idea into a product. In a few years, the product became popular around the world.
Today Velcro is used everywhere. It’s used in backpacks, jackets, wallets, children’s toys, etc. It even turns up in places you wouldn’t expect. For example, Velcro has been used by NASA for astronauts’ suits. The product was also used to hold the heart together during the very first artificial heart transplant (人工心脏移植).
Complete the summary of the passage above with one word for each blank.George de Mestral was an engineer from Switzerland. One day in 1948, after coming back from the mountains, he found some burrs on his clothes and his dog. Then he It was hard to find |
相似题推荐
Creator of e-mail makes use of ‘@’ sign
Does your class use e-mail? Have you ever tried to write a story for our newspaper and send it in by e-mail? E-mail is used for everything, and it makes life easier. But do you know where e-mail came from?
The man who invented it was Ray Tomlinson, a US engineer. He died early last month at the age of 74.
Back in 1971, Tomlinson was working on something that could send messages from one computer to another. Tomlinson tried to find a way to separate users’ name from the names of their computers. He needed some kind of symbol (符号). However, it couldn’t be a popular one, and it couldn’t be one that computers might know in a different context (语境). It also needed to be on keyboard at the same time. The “@” sign was there, and pretty much no one used it. It was perfect.
“The ‘@’ sign made the most sense,” he told Wired in 2012. “It said where the user was…at.” For example, by writing “Alex at 21st Century Teens” you can send a message to somebody named Alex who works at 21st Century Teens. This was the early form of email.
The interesting thing is that Tomlinson didn’t remember what the very first test message he sent was. “Probably the first message was QWERTYUIOP or something like that,” Yahoo reported, guessing the first row of letters on the keyboard.
Tomlinson, the father of e-mail, changed the way the world communicates and more importantly saved the symbol “@”.
Today, the “@” symbol is finding new life outside of our inboxes (收件箱). Most famously, social media like Weibo and Wechat use it at the beginning of user names. So even if we don’t use e-mail some day, Tomlinson’s contribution (贡献) will certainly live on.
1. Who invented the e-mail?
____________________________________________________________
2. When did he invent the e-mail?
____________________________________________________________
3. Why did he choose the symbol “@”?
____________________________________________________________
4. What does “@” sign tell us?
____________________________________________________________
5. What’s the passage mainly about?
____________________________________________________________
There have been many great inventions for things that changed the way we live. The first great invention was the one that is still very important today—the wheel. This made it easier to carry heavy things and to travel to a far place. For hundreds of years after that, there were few inventions that had as much influence as the wheel.
In the second half of the 19th century, many great inventions were made. Among them were the camera, the light and the radio. These all play a big part in our daily life today.
In the first part of the 20th century, there were many valuable inventions, such as the helicopter (直升飞机) in 1909, movies with sound in 1926, the computer in 1928, jet planes (喷气式飞机) in 1930. This was also a time when a new material was first invented. Nylon (尼龙) came out in 1935. It changed the kind of clothes people wore.
The middle part of the 20th century brought new ways to help people get over illnesses. These new ways could allow people to live longer. By the 1960s, most people could expect to live to be at least 60.
New inventions will some day allow us to do things we have never dreamed of.
1. The wheel was the2. The wheel made it easier to carry
3. The camera, the light and the radio were invented in the
4. Nylon came out in
5. Most people could expect to live to be
Bi Sheng was born in the Song Dynasty. He lived in a small village which lies in Huanggang today. He invented the printing around 600 AD (公元). He was the world’s first inventor of the printing. It is about 400 years earlier than the printing in Germany.
The printing is also called the movable type printing. But how did it work in the past?
First of all, the clay was made into movable types. Then words were engraved carefully onto the types. After that the words were chosen and put in right order in a box according to the text. Next, the workers brushed ink onto the movable types. Finally the types could be used for printing. They could be used again and again for different books.
The movable type printing plays an important role in Chinese culture. With the help of it, Chinese culture spread around the world more quickly. At the same time, the movable type printing was widely used in the world at that time. As a result, more and more culture communication among countries took place.
The movable type printing, the compass (指南针), gun-powder and the paper-making are called four great inventions of China. They make China own an important and even top position in the history of human civilization.
阅读短文，根据其内容完成以下任务。任务一：回答问题。
1. When was the printing invented?
2. What are called the four great inventions of China?
任务二：写出 the movable type printing在过去工作运转时的第一步。 (用英文填写)
3.
任务三：根据短文最后一段补全下面句子。
4. The four great inventions of China make China
任务四：填写以下信息卡中所缺的内容。
5.
 | Name: The printing. Another name: The movable type printing. Inventor: Influence: It plays an important role in Chinese culture. |
【推荐1】Everyone feels lonely sometimes. Maybe we have to go somewhere different or come home to an empty house. Maybe your best friend is sick or on holiday, or you find yourself in a group who all know each other well and they leave you out.
Feeling lonely for a long time can make you feel very sad. Here is some advice from kids on how to deal with loneliness.
Take something to school and if someone asks to play with you, say yes. He might ask you to play with him next time. —Caleb
Start a collection or a hobby where you are making something. You will not feel so lonely and you will be able to talk about it with other people who do the same things. If you get a magazine about collections, you can find other people who want to swap（交换）and you could be friends or pen friends.—Ivy
Go on the Internet and look for chat rooms on kids’ sites, but remember not to give any personal details, like your name and where you live, because some people who are not safe, many pretend to be kids on the kids on the Internet. Ask mom or dad first. —Sean
Help mom or dad to do jobs. You’ll have someone to talk to and you’ll learn how to do things when you grow up. —Natalia
1. Does Ivy think a hobby helps to deal with loneliness?2. What does Natalia advise us to do to keep away from loneliness?
3. How can we deal with loneliness according to the passage?
4. Do you think loneliness is bad for a person’s growth? Why or why not?
Travel(旅行) is very fun and exciting, but you won’t feel so if you get sick. Of course you don’t want to spend your holiday lying in bed. So what can you do to stay in good health? Here are some tips(提示).
A holiday should be a way to relax(放松), but very often it’s not. You may spend most of your time travelling to so many places. Remember you will get sick easily if you are very tired. When travelling, you should sometimes sit down for a few hours in a nice place.
Enough sleep is also important during your trip. You may not go to sleep at night. If this is true,change rooms or hotels. In many cities, the night life can be very exciting. If you want to stay out late at night, try to sleep for an hour or two during the day.
Finally, if you want to stay healthy, you must eat the right kinds of foods but you need to be careful about how much you eat. Lots of food is not good for you.
So, remember this, if you want to enjoy your holiday, take care of yourself.
| Ideas | A holiday is not a good way to relax if you travel too Enough sleep and right |
| Tips | You should sometimes have a Change your rooms or hotels if you can’t You’d better get some sleep during the day if you want to Be careful about what and how much you eat. It’s |
| Conclusion | Take care of yourself, and you won’t feel tired or |
It’s easy to see the fun in buying a huge ice cream or going shopping with friends, but saving money can be even more exciting. That’s because saving creates opportunities and opens the door to all kinds of adventures.
The key to successful saving is setting a goal. Get a pen and paper, and write down how much it costs, then work out how much you can afford to save each week and how long it will take you to reach your goal. It’s important to be realistic because you’ll soon get bored if you plan to save every single penny. Some weeks you might decide to save a little more than planned so that you can reach your goals even faster.
To avoid accidentally spending your savings, it’s a good idea to keep them separate from the rest of your money. You could do this by using a money box or a savings account (账户).
When you save your money in a savings account, you have the opportunity to earn interest. This is money that a bank pays you for leaving the money there— and the longer you leave money in a savings account, the more interest you will earn. Some savings accounts allow you to take out money whenever you like, but some will keep your money locked away for a certain time. Some parents set up a savings account because they want to put some money away for their kids’ future.
Once you get the hang of saving, you can set some more bigger goals. Perhaps you want to start saving for university, or you’d like to travel the world when you finish school. Remember, you can save for more than one thing at a time, as some of your goals might take months—or even years— to achieve.
If you’re new to saving, start off by thinking of some fun goals, like taking a vacation or going to a concert. Every penny you save brings you one step closer to reaching your goal—and what could be more exciting than that?
1. What is the key to successful saving?2. How could you avoid accidentally spending your savings?
3. Why do some parents set up a savings account for kids?
4. If you get pocket money from your parents every week, will you consider setting up a savings account or spending it on things you like? Why?(Give at least two reasons)
