A. no longer    B. completely   C. compete    D. given up   E. encourage

   Though the sale of bottled water is still on the rise. Certain policy makers have taken steps to reduce it and {#blank#}1{#/blank#} people to drink tap water. In September 2009, the Australian city of Bundanoon became the first city in the world to {#blank#}2{#/blank#} stop bottled water from being sold in stores, building water fountains instead.

   Among the cities in America that have taken action are San Francisco and Seattle, which {#blank#}3{#/blank#}buy water for city use, and Chicago which adds a five-cent tax on each bottle. Several restaurants in those cities have also {#blank#}4{#/blank#} bottled water for tap water. Other cities are also considering taking action.

Dear human beings,

    Hi! I'm 80 years old now. So I've seen 1 of the world. We've lived on Earth with you thousands of years. Each day we release(释放) O₂ and remove harmful gas so that you have fresh 2; we help prevent the Earth's soil（土壤）from being washed away, and above all, we give all kinds of fruits, nuts, beans as well as 3 to you.

    We are now in great 4 because of you. You are killing us at a terrible speed. You are burning and cutting down millions of us each year, but you're not 5enough. For every tree being planted today, 30 trees are being cut down. What would you do if all of us 6? Perhaps you would die, too.7 us, you wouldn't get enough material for buildings, furniture（家具）, paper products, and your cities would 8ugly. Moreover, air pollution and noise pollution would become more and more serious, and your life would become nasty.

    The 9 thing for you to do now is to stop your bad manner. We are the best fighters 10 pollution and we are your best friends!  

Your friend,

An old tree

    Water is very important in our life. We drink it every day and1it to cook and wash things. We cannot live2water. But how can we save water?

    There are several ways to save water. Firstly， take shorter showers and don't leave the tap3when we don't need to use water.4 ， try to reuse water. It's the most important way for us to save water. At last， we should not5water so that we will have6water for years and years.

    To protect water is to7our life. Some people think there's much water8the Earth. In fact， there is only9water for us to use now. If we don't save it， it will surely be used out some day.

    So we should save water in order to save10. Do you think so?

    Many of us enjoy watching animals in the world. But do you know they can teach us?

    Geese(大雁), for example, teach a very good lesson about1  In the fall, Canada geese fly to the warm south to 2 Canada's cold winter. They lift off in no order. Yet3 they form a V shape, with one bird leading the group.

    This V shape allows geese to 4 energy(能量). When the front bird moves its wings up and down, the resulting force of the air lifts the next one. This continues down the line. The bird 5has the hardest job. When it gets 6 , it moves behind, and another bird moves into the lead. By sharing the role, the group can travel great distances (距离). Geese flying in a V shape can fly 70 percent farther without 7 than birds flying alone. During the long flying travel, geese communicate with one another. They honk(鸣叫)to 8 the birds up front to keep up the speed I (速度). They also ,cheer each other up 9working toward a common goal (目标).

    What have we learned from the lovely geese's experience and skills?10 together! Whether it is our personal lives or our jobs, we need other people. We need the spirit of teamwork!

    In some parts of the world, there are large deserts. There are no trees and 1 water there. Travellers must take food and 2 with them.

    The 3 animal that can walk through the desert is the camel. 4 can go without food and water for a long time, and besides (此外) he can carry heavy loads (负荷). People call the 5 "the ship of the desert".

    The camel is very big. He has one or two humps (驼峰) on his back, short ears and a long 6.

    The camel's humps hold fat (脂肪), and his stomach holds water in twelve pockets. 7 pocket has a mouth. The mouth closes, so the food and the water don't mix. When the camel 8 some water, he can get it out of the 9. The camel's food is 10 and leaves of trees.