Have you ever planted a few trees on Tree Planting Day? Each year, millions of people, both  1 , plant a lot of trees. But this may not be the best way to make your home a  2 place.

   Last week we visited a park in Hebei. We were  3  to find most of the trees had been burned. The workers told us that the trees 4 soon after they were planted because they weren't watered well enough. 5workers burned them and cleaned the place for 6 trees to be planted this year. 7 a card found in one of the dead trees, a student wrote, ＂I hope this tree will grow up with me to   8   the backbone(栋梁) of our country.＂The workers said that the survival(存活) of the trees was really more important than  9   trees were planted.

    Some people in Beijing now have a new idea that they can donate(捐赠) some money and let professionals (专业人士) plant and  10  the trees.

The US public uses about 50 billion water bottles a year and most of those {#blank#}1{#/blank#} bottles are not recycled, according to Elizabeth Royte's book Bottlemanid: How Water Went on Sale and Why We Bought It.

More than $100 billion is spent every year on bottled water in the U.S. in many developing countries where there isn't a safe {#blank#}2{#/blank#} of tap water, bottled water is the only choice.

In the US, tap water is controlled by the government and often {#blank#}3{#/blank#} for dangerous substances(物质). Each American drinks 79 litres of bottled water per year {#blank#}4{#/blank#}. The bottled water industry is so successful that it has outpaced milk, coffee, and juice in the number of gallons of drinks sold – putting it behind only beer and soda.

    People like dolphins because they are both lovely and clever. They have an 1 IQ (智商).

Dolphins can 'talk'. Scientists try to ‘talk' with dolphins, and the results make them 2. They find that dolphins 3 understand them so well.

4 animals enjoy playing, but dolphins like to make their games different. On a beautiful day in 1997, scientists on a beach 5 a little dog going into the sea. They were surprised to see the dolphins come up to the dog and then start throwing(扔) it into the air. The dog 6 the 'game' and kept playing with the dolphins for over an hour.

    Dolphins live in a very different world from 7, but they are very good at our 'IQ tests(测试)'. For example, in the picture above, a dolphin jumps 8 the water when he hears a whistle noise(哨声). He does this because he will get a fish 9 an award.

    There is 10 much to learn about these lovely friends.

    There are many kinds of pollution around us,1 air pollution, soil pollution, noise pollution and light pollution. They are bad 2our health in many ways.

    Burning gas, oil and coal creates air pollution. It can cause sore eyes and 3 problems.

    With the increase of pollution and the 4 of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many chemicals in the fields. They destroy the soil. So soil pollution has become serious.

    Noise pollution can make people 5 For example, people may lose their hearing if they work in a 6 place for a long time. Too much noise can cause high blood pressure 7

    Working for a long time in strong, changeable light 8 cause some kind of illnesses. It makes people feel 9 and is especially bad for the eyes.

With 10 pollution, our planet will become greener and our health will be better. Let's be greener people.

    Can you imagine what life will be like in the future? Will life in the future be better, worse or the same as now?1do you think of the future?

    People2that life will be probably very different in 2050. First of all, planes will be very3so flying will be very cheap. Everyone will have a small car. Fuel will be new and clean, but expensive. We will4robots everywhere. And space planes will take us around the universe5two hours. Homes will be warm in winter and cool in summer, so they will be very comfortable. We will use the sun6our homes. Computers will be very small so they will be very7. People will do many things on the Internet.

    At that time, water will become one of our most8problems. In many places, farmers will be in great need of water to9fruit and vegetables.

    By 2050, we will be able to help blind and deaf people see again and10again. At that time, our life will become better and better.

    What is the most important invention of all time? Is it the written word that helps us to record information? Is it the telephone that lets us talk to people 1 all over the world? Is it the car that lets us travel at great speeds to meet 2? Umberto Eco, an Italian writer, thinks it is something quite different. He says the most important invention might be right in front of your 3. He is talking about a simple pair of glasses.

    Modern eye glasses were 4 about 1,000 years ago. They were more than just a convenient way 5. Before glasses, writers, scientists or teachers 6 could not see properly had to memorize everything. After about ten years of poor eyesight, they could not remember well enough 7 could not work. Glasses meant that people could work into their old 8. People who wanted to remember some information could 9 and read it. Eye glasses are one of the world's greatest inventions and were probably 10 by the people who designed the first telephones and cars.