1 .

Do you play with your phone before bedtime? According to a US study, looking at screens at night can cause us to sleep not well.

In the evening, our brains make melatonin. Melatonin helps us feel sleepy and relaxed. It’s an important part of our sleep cycle. Our electronic screens stop that cycle from working normally.

Why? Phones, computers and TVs make blue light. Blue light stops our bodies from making melatonin. Even just a little bit of blue light can have an effect. Eight minutes of blue light can keep your brain “awake” for another hour, according to the study. Even when you are sleeping, you may have lots of dreams. Your brain won’t have a good rest.

It’s even worse if you play an exciting game before bed. Games make our hearts beat faster, so we have a harder time falling asleep. Then, when we are sleeping, we don’t get enough “deep sleep”.

2 . When you travel in the forest, you should stay with your friends. If you walk around only by yourself, you might get lost.

When you lose the way, the most important thing to do is to stay in one place. ___________ Let them find you. You can shout or whistle three times. Then shout or whistle three times. Then shout or whistle three times again. Any signal for three times shows someone may be lost and need your help.

When people hear you, they will give you two shouts or two whistles. When a signal is given twice, it shows someone gets your calling and he is coming to help you.

When you need some water, you have to leave the place to look for it. Don’t just walk away. You can get small branches and drop them as you walk. It will help you go back again easily.

3 . People all over the world celebrate birthdays. Some ways to celebrate birthdays are the same from country to country: candles, cakes and birthday wishes. But there are also different ways to celebrate birthdays. Here are a few:

4 . Many families have plastic chairs. Many small restaurants also have these chairs. Plastic chairs are light and easy to use. Most plastic chairs have small holes on their faces. But why do chairs have these holes?

Protect the chairs. The holes are very important. It can help them release pressure, with the hole, the chair do not break when you sit on it.

Easy stacking. When you don’t use your chairs, you can stack them together. One chair goes on top of another. The hole makes it easy to do that.

Easy taking. Look at the hole. It is just big to put your finger inside. You can easily take a chair by putting your finger in the hole.

       Do you often carry maps when you travel to other countries? Maps can show you the right ways. But if you don’t bring maps with you, what should you do? I’m afraid that you need to ask the way. Here are some tips(建议) for you, because there are different ways to give ways in the world.

In Japan, most streets don’t have their street names. The Japanese use landmarks(路标) to give ways. So when you ask, “Excuse me, could you tell me how to get to the nearest post office?” They often say, “Go along the road, turn left on the second street and go past a supermarket. The post office is opposite the hospital.”

In the countryside of the American midwest. The land is very flat(平坦的). So if you have the same question, people will say to you, “Go east 3 kilometers, turn north and then walk another kilometer.” But in Los Angeles and California, people measure distance(测量距离) by time, not meters. So when you ask, “How far is the nearest post office?”, they will tell you, “It’s about 10 minutes’ walk from here”.

People in Greece often use body language to help you. They will use their hands to show the right or left ways, or they will simply say, “follow me.” Because they can’t speak English and the tourists couldn’t understand the language there.

9 .

With the help of the Internet, shopping is becoming an easy job. You don’t need to go to the street, looking for things from shop to shop. You just click the mouse to choose the things you like at any time or any places you like. And in a few minutes, the shopping is over. And the next three to seven days, the thing you buy online will come to your house.   

It sounds fun, easy and quick. But sometimes you may meet something bad from online shopping. If you are not careful enough, you may buy some fakes. They are cheap copy things. And you want to give them back. But the owner of the shop online may not keep in touch with you. If you give them Chaping, They may do something bad to you. We often read this kind of news on the newspaper. It is terrible. And if you want to be different, it is a good idea not to buy clothes online. Once you put on the coat and go out. You will find many people wear the same clothes in the street. You may feel uncomfortable. But the next example will make you mad. According to the survey of March 15^th Party this year, many kinds of Japanese food, such as Japanese Calbee and Xinxie Rice, is dangerous. After eating them, you may have a bad body.

10 . Today is our Open Day. Our parents come and see our school on this day. Our school is very big and beautiful.There are five buildings in our school. Look! The office building is on your right. Our teachers work in it. Behind the building, there are two classroom buildings and a school library. In the library there are all kinds of books. Our big playground is on the left of these buildings with lots of trees around it. Every day, many students play football, basketball and tennis. We have a good time on the playground after school. We also have a school hall behind the playground next to the library. We meet our parents and have parties (举行晚会)in the school hall. Today, after school, we have a welcome party for our parents. I think our parents will like our school, too.

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