The world is in danger. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 860 remain(剩余). The others have been destroyed(破坏) by man. We are changing the earth, the air, the water and everything that grows and lives. We can't live without these things. If we continue doing like this, we will destroy ourselves.

    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation(对自然环境的保护) is necessary. Many are helping to save our world. They plant trees and protect animals in forest. In a small town in the United States, a large group of volunteers cleaned the banks of their rivers. Young people may hear about conservation through a record called No One's Going to Change Our World. It was made by the Beatles, Cliff Richard and other singers. The money from it will help to protect wild animals.

   Americais a mobile society. Friendship between Americans can be close and real, yet disappearssoon if situations change. Neither side feels hurt by this. Both may exchange Christmasgreetings for a year or two, perhaps a few letters for a while, then no more,If the same two people meet again by chance, even years later, they pick up thefriendship.

   Thiscan be quite difficult for us Chinese to understand, because friendship betweenus flows more slowly but then may become lifelong feelings, extending(延伸) sometimesdeeply into both families.

   Americansare ready to receive us foreigners at their homes, share their holidays and theirhome life. They will enjoy welcoming us and be pleased if we accept theirhospitality (好客) easily.

   Anotherdifficult point for us Chinese to understand Americans is that although they includeus warmly in their personal everyday lives, they don't show their politeness tous if it requires a great deal of time.This is usually the opposite of thepractice in our country where we may be generous with our time. Sometimes,we, as hosts, will appear at airports even in the middle of the night to meet afriend. We may take days off to act as guides to our foreign friends.Americans, however, express their welcome at home. But they truly cannot managethe time to do a great deal with a visitor outside their daily routine. They willprobably expect us to get ourselves from the airport to our own hotel by bus. Andthey expect that we will phone them from there. Once we arrive at their homes,the welcome will be full, warm and real. We will find ourselves to be treatedhospitably.

   ForAmericans, it is often considered more friendly to invite a friend to theirhomes than to go to restaurants, except for purely business matters. So accepttheir hospitality at home!

Every year，Time magazine puts out its list of the year's best inventions.Some of them help us solve problems，while others make life easier or more fun.Here are three of the inventions on this year's list.Which one do you think is the best？

Life﹣like animals

At the Hologram Zoo（全息动物园） in Australia，you don't just see a giraffe.You see a group of giraffes running towards you and then over you."We show people things they have never seen before，"says the zoo's CEO.Visitors to the zoo can see life-like wonders.Thanks to hologram technology，the public can see wildlife while no animals have to be kept in cages.

Stopping fires

Alert California is a safety program in California.It uses AI to predict wildfires.The AI detector（探测器） uses more than a thousand cameras in forests across the state.It can spot smoke and other early signs of fire.In two months，the program correctly predicted 77 fires before any 911 calls came in.

Air on Mars

If astronauts land on Mars in the future，they'll need air to breathe and a way to get home.NASA's Moxie can help solve both problems.This small equipment can separate oxygen（氧气） from the atmosphere（大气） on Mars and help astronauts breathe.In addition，the oxygen can be used to provide energy for spaceships.This is important for sending astronauts home from Mars.

Hello, my name is Li Hui. Hui is my first name, so you can 1 me Xiaohui. I am 2 . I come from China. I am 3 Shanghai now. Tom is my good friend. He is not Chinese. He is 4 English boy. But now he is in Shanghai, 5 his parents work here. He is thirteen, so he is younger than me. His English name is Tom, and his Chinese name is Dalin. We are both in 6 Grade Seven in No.6 Middle School. And both of us like 7 basketball. We often play it with our classmates after class. We can play basketball 8 . Yao Ming 9 our favorite basketball star. Mr. Li is my favorite teacher. He teaches 10 math. I like math and P. E.

Do you have a dictionary? {#blank#}1{#/blank#} But how often do you use a dictionary? I don't believe that everyone can make good use of it. {#blank#}2{#/blank#} You will ask someone for the meanings. But if you have a dictionary, please don't let it sleep. You should make better use of it. The better you use it, the more words you will know. It can tell you the meaning of the words. {#blank#}3{#/blank#}

It is true that dictionaries are very useful and important to us. {#blank#}4{#/blank#} When you have a question you can turn to them. They will give you the right answer. They are also like a friend and stay with you forever. You can learn a lot from them.

Don't be lazy. {#blank#}5{#/blank#} You will find it is a new world if you walk to it.

For many people, their first plane trip is ' not very good. The following will help you have a good trip.

The first and most important thing is to be EARLY! Call the airport 4 hours earlier and make sure that the flight(航班) is still on time. Get to the airport 2 hours early. This will give you much time to get your boarding pass(登机证) and pass the security check(安检).

Be sure to take something to chew(咀嚼) when you are in the air. Taking a book with you can help you kill your flight time. You also need to take some special things like glasses or medicine, because you may need them on your trip. Take the ID card and enough money with you. Because you need them when having a trip.

When you get on the plane, make sure that you are in the right seat. Don't be afraid when the plane is taking off(起飞). Take— off may be a difficult part of your trip. When it is over. you can release(解开) your seat belt(安全带), and you can go to the lavatory(卫生间) if you want.

Wish you a happy flight!