Vanuatu is an island nation in the South Pacific. It is one of the smallest countries in the world. But tor those who are interested in adventure and sport, there is a lot to do. Vanuatu's islands offer visitors two of the most exciting and dangerous activities in the world: volcano (火山) surfing and land diving.

    Volcano Surfing

    On Tanna Island, Mount Yasur rises 300 meters into the sky. Yasur is an active volcano, and it erupts (爆发) almost every day, sometimes several times a day. For centuries, people have climbed this mountain to visit the top. Recently, people have also started climbing Yasur to surf the volcano. In some ways, volcano surfing is like surfing in the sea, but in other ways it's very different. Volcano surfers try to escape the erupting volcano-without getting hit by flying rocks! It's last, fun and dangerous-the perfect extreme sport (极限运动).

    Land Diving

    Most people are familiar with bungee jumping, but do you know bungee jumping started on Pentecost Island in Vanuatu and is almost fifteen centuries old? The activity, first called land diving, is part of a religious ceremony (宗教仪式). A man ties tree vines(树藤) to his legs. He then jumps head-first from a high tower to touch the earth with the top of his head-without breaking the vine. Every spring, island natives (men only) still take Dart in this amazing activity.

    Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.

    Sometimes, the word "green" means young, fresh and growing. For example, a greenhorn is someone who has no experience. In the 15th century, a greenhorn was a young cow or an ox whose horns(角) had not yet developed. A century later, a greenhorn was a soldier who had no experience in war. By the 18th century, a greenhorn had the meaning it has today—a person who is new in a job.

    Someone who is good at growing plants is said to have a green thumb(大拇指). The expression comes from the early 20th century. A person with a green thumb can make plants grow quickly and well. The Green Revolution (绿色革命) is the name given some years ago to the development of new kinds of rice and other grains. It was the result of hard work by agricultural scientists who had green thumbs.

    Green is also the color used to describe the powerful feeling—jealousy(嫉妒). The green eyed monster is not a dangerous animal from outer space. It is an expression used about 400 years ago by the British writer William Shakespeare in his play Othello. It describes the unpleasant feeling when someone has something he wants.

    In most places in the world, a green light is a signal(信号) to move ahead. In everyday speech, a green light means approval(赞成) to continue with a project.

With the development of science and technology(技术), our daily life is becoming easier and more colorful.

You love reading, but you've read all your books four times, and don't want to read the same ones. You are planning to go to the library, but don't know what kind of books to get. With the following ways, it's easy to choose a good book!

Answer these questions first. What are your interests? {#blank#}1{#/blank#} Type your hobbies into your library catalog search (目录搜索). By doing this, you will find books that you might like.

Search your house next.{#blank#}2{#/blank#} Maybe you forget about one or other family members have some good books. Also by searching your house, you can find some books that you can read. They won't even cost you any money.

Then join a book club, please. Being a book club member is often a way to have new books to read with other members. {#blank#}3{#/blank#} And you can also read and talk about the books with others.

Finally, read the first part of each book. Of course, if you have many books to read, this can be time-consuming (耗时的). {#blank#}4{#/blank#} And you won't have a hard time looking for books again in this way.

Give your advice on how to choose a good book. (Within 20 words){#blank#}5{#/blank#}

 The Earth is a beautiful place. It provides us with food, water, air and the place to live. But we humans(人类) are slowly destroying(破坏) it.

 Humans have destroyed one tenth of the Earth's forests in the last 25 years according to a new study. Humans have been cutting down trees for different reasons (原因), such as building houses or farming. These forests clean the air and provide rain for the world. "If we don't stop cutting down them, all the forests on the Earth will be destroyed badly in less than 100 years.

 Also, we are putting our rubbish into rivers and lakes. Some of the rubbish is bad for plants and animals in the water. Factories pour their dirty water into the rivers before it is cleaned. As a result, there is less and less clean water for people to drink.

 What's worse, a lot of animals are killed by humans. Some people kill them for food or clothes. Others hunt them for money. Many animals lose their homes because of human activities. Since humans came to the Earth,1,000 species(物种) have gone.

Nearly 20,000 plants and animals are in danger of dying out.

 Today our Earth is in great danger. So it is time that we humans should realize our mistakes(错误) and do some things to protect the Earth.