阅读下面的短文并用英语回答问题，将答案写在答题纸标有题号的横线上。

    Jess really felt very happy. When he got to his seat in the classroom that morning, he found an invitation(邀请书)on his desk. It was from some of his classmates asking him to join them on a camping trip. This was the first time they asked him to join in an out-of-school activity. Why were they asking him now? Nobody seemed to like him. In fact, he was so lonely and unhappy that he drowned(沉溺)his feeling with snacks. So he put on lots of weight, and this gave his classmates something more to make fun of him.

    Cindy. who was standing near Jess when he read the invitation, went out quickly to tell the others that the trick worked. Everyone was happy that Jess believed it. But there was no camping trip. The whole thing was not true.

    At first, Cindy thought it was fun. But later, when Jess told her that he was going to buy a sleeping bag with his savings. Cindy had a second idea. She knew that Jess's family had little money, and she hated to see him spend his savings on something he would never use. Cindy also hated to tell Jess the truth. Her close friends would be angry with her.

    Every morning my father buys a newspaper on his way to work. Every day I open my books in class and start lessons. Every evening my mother looks through magazines at home. And every night, I look at the posters with photos of David Beckham and Yao Ming on my bedroom wall before I go to sleep. Can we imagine life without paper or print?

    Paper was first created about 2,000 years ago, and has been made from silk, cotton, bamboo, and, since the 19th century, from wood. People learned to write words on paper to make a book. But in those days, books could only be produced one at a time by hand. As a result, they were expensive and rare. And because there weren't many books, few people learned to read.

    Then printing was invented in China. The first printed books were made by putting ink on a wooden block and holding the paper against it. When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. As a result, more people learned to read. After that, knowledge and ideas spread(传播) quickly, in a way that can be compared with the introduction of the Internet in the 20th century.

    But will books be needed in the future? Today information can be received online, downloaded from the Internet rather than found in books, and information can be kept on CD-ROMs or machines such as MP4 players. These machines are smaller and lighter than books so that they can be carried very easily.

    Computers are already used in classrooms, and newspapers and magazines can already be read online. So will books be replaced by computers one day? No, I don't think the Yao Ming poster on my bedroom wall will ever be replaced by a computer two metres high!

    It's getting hotter and hotter outside. Summer is already here! Summer means high temperature, more outdoor activities and all kinds of fruit and vegetables. How can we stay fit in this exciting season? Here are some good ideas:

    Eat and drink properly

    What is healthy to eat in summer? Fresh and light food. Fish can be a good choice. It can keep your body energetic and help fight against the burning sun. Colourful fruit and vegetables is another good choice. They not only please your eyes, but are full of healthy chemicals(化学物质). Tomatoes can help protect your skin against sunburn. Blueberries are good for your brain and eyes. The more colour, the better!

    With all those summertime activities you will be thirsty. What to drink? Water. Water has zero calories(卡路里) and is the perfect drink to stop your thirst. Try not to drink too many energy drinks, sports drinks and soda drinks which have lots of sugar and caffeine(咖啡因) in them.

    Stay active and cool

    Summer is a great season to enjoy outdoor activities and play. It's also a good time to lose weight. If you are lucky enough to be near a body of water, try water sports like swimming, surfing, water skiing and so on. These sports keep you cool and active at the same time. You'll have no problem beating the heat and keeping fit as well. .

    Be careful of the        

    Summer allows us more chances to get outside ，but it also means more possibilities to get burnt by the sunshine. If you are going outside, keep away from the sun when it's the strongest- usually between 11 a.m. and 3 p.m. If you have to stay in the sun for a long time, sunscreen(防晒霜),a big hat and a long-sleeve jacket will be necessary,

    When Paul was a boy growing up in Utah, he happened to live near a copper smelter(炼厂), and the chemicals coming out of the smelter made a beautiful forest become a wasteland. One day a young visitor looked at this wasteland and called it an awful area. Paul got so angry when he heard these words. From then on, something happened inside him.

    Years later Paul was back to the hometown and he went to the smelter office. He asked if they had any plans or if they would let him try to bring the trees back. The answer from that big industry was "No".

    Paul then went to college to study the science of plants. Unfortunately, his teachers said there weren't any birds or squirrels(松)to spread the seeds. It would be a waste of his life to try to do it. Everyone knew that, he was told. Even if he was knowledgeable as he had expected. nobody accepted his idea.

    Paul later got married and had some kids. But he didn't give up. And then one night he did what he could with what he had. Under the cover of darkness, he went secretly into the wasteland and started planting.

    And every week, he made his secret journey into the wasteland and planted trees and grass. Slowly rabbits appeared. Later, as there was pressure(压力)to clean up the environment, the company actually invited Paul to do what he was already doing. Now the place is fourteen thousand acres of trees and grass, and Paul has received almost every environmental award Utah has. It took him a long time until his hair turned grey, but he managed to keep that impossible promise he made to himself as a child.

    For most people, summer holidays mean sun, sea and sand, {#blank#}1{#/blank#}. She had a holiday full of ice and snow. She and her family travelled across Greenland! Starting just above the Arctic Circle (北极圈), Sarah's family used dogsleds with kites to cross the world's biggest island.

    Sarah says {#blank#}2{#/blank#}. "There is only snow, ice, and more snow. " The family travelled 15 miles a day for 22 days, moving faster when strong winds pushed along their kites.

    Then the weather became a bit hot for the dogs to pull sleds during the day, {#blank#}3{#/blank#}. The Landrys lived in tents, ate dried food, and took baths with heated water. When they weren't travelling, they played with kites and made snowmen. Using their mobile phones, the family could send and get emails even from Greenland's ice cap! The road to the top was icy and dangerous.

    {#blank#}4{#/blank#}. "Icebergs (冰山) were so bright, just like the rising sun." said Sarah. Now she and her family have returned home, {#blank#}5{#/blank#}. Next holiday, they are going to the South Pole.