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    Flying is a fast way to travel. But it is a big headache for some people. They can't help worrying about things like, “Is turbulence (颠簸) a bad thing?” or, “Is it dangerous if we don't change our mobile phones to flight mode (飞行模式)?” British newspaper Daily Mail spoke to some experts to answer these questions. They also tell us other interesting things about flying.

    Is turbulence dangerous?

    It's scary and uncomfortable. But it is not something you really need to worry about.

    Turbulence is caused when two groups of air hit one another at different speeds. Wind, thunderstorms (暴风雨) and being close to mountains can be reasons for this.

    You may feel like turbulence is dangerous, but it won't crash (坠毁) your plane. “Even in extremely rough air (扰动气流), the wings (机翼) are not going to break off,” explained Patrick Smith, an airline pilot, who is also an air travel blogger and author of Ask The Pilot. com.

    Why are plane windows round?

    Round windows are for passenger safety.

    As the airplane flies higher and higher, the outside atmospheric pressure (气压) gets lower and lower. During the flight, the pressure inside the plane becomes greater than the pressure outside.

    When this happens, square windows can break. That's because having different pressures inside and outside puts pressure on the corners of square windows. But rounded corners can spread the pressure through the window.

    What happens when a phone isn't on flight mode?

    Some passengers believe mobile phones and tablets need to be turned off because they could bring the plane down. However, this is not true.

    If you don't change your phone to flight mode, pilots and air traffic controllers may hear unpleasant sounds in their headphones. It also influences radio communications. So it's still best to put it on flight mode.

—He lives in Shanghai.

    Many people like keeping birds. Do you want to keep a bird? If you do, please first read it. It is not easy to keep a bird.

    ①Talk with some bird keepers or your vet.

    ②Think about what kind of birds your family needs and how much you can spend on it.

    ③ Read everything you can find about the bird that you want.

    ④Think about if it fits your lifestyle. If you are too busy, you can't keep a bird. It needs your time.

    ⑤Think about if you can give the bird the time and love it needs.

    ⑥Think about if you can give it the cage, food, toys and vet care (兽医护理).

    ⑦Visit some pet shops. Then you may find a good but cheap one.

    ⑧Buy a bird from a good shop.

    ⑨Take it to a vet for a few bird check-ups.

    ⑩Take it home and give it the good care, the clean cage, nice food and lots of love.

—Yes, Mum. I've got everything ready.

    British roads are the safest in the world-in 2010, only 3. 8 people out of 100, 00 died in road accidents. This number is lower than in any other country. If you go there, you should try to drive the same way British people do. This is some advice for visitors who plan to go driving in the UK.

    Drive on the left side of the road. In most countries, people drive on the right side. Many visitors have problems because they forget about this difference.

    If there is a line of cars, don't try to go past other people to get to the front. This is called "jumping the line". If you do this, other people will get angry with you.

    Stop at traffic lights. In the UK, drivers always stop when the light is red, even if there aren't any cars or people around.

    Don't use your horn(喇叭)too much. If you do, people will think you are not polite. If another driver flashes(闪光)their lights at you, then they are probably trying to tell you that they will wait for you to go first.

    If you have an accident, then don't try to bribe(贿赂) the police! If you do, you might finish your visit in prison(监狱).

—I think both of them are OK. You       

    I often hear some students say English is difficult, and it gives them a headache. But English is very easy for me. I'm good at it. I'm very glad to tell you something about how I study English.

    First, I think an interest in English is very important. When I learned English first, it was fresh for me. I was interested in it, so I worked hard at it. Soon we had an English exam and I got a very good mark. How happy I was! After that, I learned English harder and harder. Our English teacher often teaches us English songs, and the songs sound nice. I often think how interesting English is!

    Second, I think English is a foreign language. I should learn it well in the following ways: Listen to the teacher carefully, speak bravely, read aloud and have a good vocabulary. Then practice again and again, never be tired. And I also have a good habit: Asking whenever (不论何时) I have a question. I must make it clear by asking our English teacher. How happy I am when I understand!

    Besides this, I often read English stories, jokes and easy novels. They help me understand a lot of things. So to do more reading is an important way to learn English well. And I also write English diaries. English has become a close friend of mine.

I for the bus at the bus stop when .

I don't drive my car to protect the environment.

要求：80词左右，可适当发挥。电子邮件的格式已给出，不计入总词数。

Dear Linda，

                                                                         Yours

                                                                         Li Min

you say, I'll believe in you.