With more and more cars on the road, the traffic jam will happen. How do we see it and how can we solve the problem?

    We know that the traffic jam(堵塞)happens in many places, especially in big cities. What are reasons for the problem? On one hand, some people think that they should have a car when they have enough money, and then it's easy to go out and they can feel comfortable. On the other hand, a growing number of people hope to use their cars to show off (炫耀). What's more, years of research has shown that one of other reasons for the traffic jam is the driving habit. For example, many young people enjoy driving very fast, so they can feel excited. At last, most of them hardly care about the speed rules.

    Many governments are working at how to make the traffic better. In my opinion, firstly, the governments should educate those people who have cars or plan to buy cars. The governments must make them know that the traffic jam is very serious, and set up a much more perfect traffic system (体系)to solve the traffic pressure.

Nowadays Dianzan is one of the most popular words on the Internet.When you think someone's ideas are right, when you think someone's articles are1, or when you are moved by what someone writes, you can click(点击) the praise sign. Anyhow,clicking the praise sign2 thatyou agree with someone or praise someone.

Dianzan is a kind of Chinese Internet language. People3useit when they surf the Internet. There is a function of Dianzan in the QQ space.The QQ space has had the function4 2010.It didn't become very popular until Sina blog(新浪博客)5the function of Dianzan.In recent years, it has become more and more popular. When the 2015 New Year came,Chinese president used the word Dianzan to praise and express his6 to the great Chinese people.

Websites can know how many people support some ideas by7 how many people click the praise sign. Experts(专家) can know8 teenagers are caring about through what they clickthe sign for. That can help them solve teenagers'9.

Clicking the praise sign is really a(n)10 thing. Have you ever clicked the sign for anybodyon the Internet?

    Laughter is natural for people. We start to laugh at about four months of age. We start to laugh even1 we start to speak.

    Laughter connects us with others. We laugh more when we are with other people. It's difficult to pretend to laugh. Laughter is2. When people pretend to laugh, most people know it's not real.

   When do people laugh?

    Only 10 to 20 percent of laughter is about something3. Most laughter is about being friendly with other people. Most laughter says, "I don't want to4 with you. I want to be friendly with you." This kind of laughter brings people together.

    We often laugh when we feel nervous. In movies, there is often a joke at an exciting moment when everyone feels nervous. It is usually a(n)5 joke, but we laugh a lot. Our laughter helps us6.

   Why doesn't everyone laugh at the same joke?

    Not everyone has the same sense of7. Some people think a joke is funny, but other people don't think so. People have different ideas about what is funny.

    Our idea of what is funny changes with8. For young children, the world is new. They are interested in many things, so they laugh9. Teenagers often laugh to protect themselves. Adults laugh at themselves and other people with similar problems. They laugh at things that give them stress. Our10 for laughter change gradually.

We live in the “computer age”. Today, it is more and more i{#blank#}1{#/blank#}for us to use computers. We use them at w{#blank#}2{#/blank#}, and we also use them at home. Adults use computers and c{#blank#}3{#/blank#}use computers, too. We often use the mouse to run all the work.

Slowly, you may f{#blank#}4{#/blank#}painful and numb(麻木的)in your hand, your wrist, your shoulder, and your neck. What's w{#blank#}5{#/blank#}with you? The mouse is eating your body f{#blank#}6{#/blank#}your hand to all. Some researchers explain that we feel painful b{#blank#}7{#/blank#}we often repeat the same action—click(点击). So we feel u{#blank#}8{#/blank#}little by little.

Nowadays, there are no best ways to s{#blank#}9{#/blank#}this problem. The only way is to change the way we use the mouse and the keyboard(键盘). When at work, we should have a break and e{#blank#}10{#/blank#}to keep our body healthy.