Different countries have different ideas about how to be polite. In Britain, table manners are important. But how do you show good table manners in Britain? Here is some advice:

    How to sit: You should sit up straight in your chair. When you eat, don't pick up the bowl. This is called very bad manners.

    Noises at the table: It is never a good idea to make a noise at the table. 

Using your fingers: Usually we don't pick food up with our fingers when we are eating main dishes. But there are some foods such as pizza, sandwiches, chips and fruit we can eat with fingers.

Passing things: If someone asks you to pass something like the salt, only get it if you are the closest person to it. Never lean (倾斜, 倾倒) across someone else's food. It's more polite not to use it yourself first — pass it directly to the person who asked, and then use it later. It's best to taste your food before you put salt in it.

    Your mouth: It is not polite to talk with your mouth full of food, nor to eat with your mouth open.

    How much to eat: It is polite to eat up the food that you have been offered, so a clear plate is a good plate. It shows that you enjoy the food. If you can't finish everything and you can leave a little, that is okay. You could say something like “That was very nice, thank you.”

Scientists say they recently invented the world's tiniest remote—controlled robots. The robots are small enough to sit on the side of a coin. They don't have any power of their own，and they can be controlled from a distance by using lasers（激光器）. The scientists say one day robots like these may be able to work in areas too small for tools. The robots don't move very quickly. But because of their tiny size，they're also not too slow. It takes the robots about 20 seconds to cover 1 centimeter. 

Right now the robots aren't all that useful. All they can do is to move，and they need to be in a place where lasers can shine on them to do that. But the scientists say these robots are an important step toward inventing more helpful tiny robots. 

The researchers say that one day tiny robots like these might be able to work in very small spaces. It's possible that they could build very tiny machines，or perhaps even travel inside the human body to help do with medical problems. 

Using similar building methods，the scientists made a number of different robots，including ones that looked like small insects. John Rodgers，says that their methods allow them to "build walking robots with almost any sizes or 3 D shapes. "

How do you feel when you have to make a report in front of your classmate? What about when you go to a birthday party? Do you get 1 shy? Shyness means feeling nervous or 2 when you are round other people. Everyone experiences this shyness 3 they grow up. Most people have red faces and talk in broken sentences when they are in the center of attention. It's OK if it takes you a while to feel yourself again when you go to a new place or meet strangers. 4 , everybody gets a little shy sometimes. But many teenagers think that they hate themselves and that they won't fit in the future at coming point. 

Stop the negative thoughts about yourself. If shyness doesn't keep you 5 something you want to do, being shy isn't a very big problem. Some experts say shy people are not only cleverer, but also better at working with others, because they think more and talk 6 . Some great people in history were shy, too. You see, being shy isn't all 7 . But remember not to let good chances 8 just because of it! Your shyness will 9 . When you grow up year after year, you will become brave enough to speak to anyone. But now, you need practice! If you have to sing a song at a party, just do it! There's nothing to be afraid of. 

Remember: though you are shy, you do not lack in 10 . Come on, our shy friends. 

内容包括: 

1. 早睡早起，不熬夜；

2. 养成良好的饮食习惯，多吃健康食物，少吃垃圾食品；

3. 开始锻炼，做运动。

写作要求: 

1. 词数在 80 左右，包含所有要点，可以适当扩展。

2. 文中不得出现真实的学校名称与姓名。

How to keep healthy on winter vacation

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