Look at the koala! It is 1 lovely that I want to touch it. How much do you know about koalas, especially a baby koala? Let's look at it.

    A newborn koala is smaller than a peanut. For the first few months the baby 2 inside its mother's pouch(育儿袋), and drinks its mother's milk.

    By the age of 5 3, its eyes are open and it can look out 4 the pouch. It still stays there.

     About six months after the baby is born, it leaves its mother's pouch for the 5 time for a short time, but it hangs onto its mother's back.

    It is now about 500g. It comes in and out of the pouch. It keeps very close to its 6and returns to the pouch within a few minutes. Gradually the baby will stay out longer.

    By 12 months old, the baby wants to eat only eucalyptus(桉树) 7, no more its mother's milk. The mother koala begins teaching her baby which eucalyptus leaves are 8 to eat.

    A one-year-old koala can 9 on its own, 10 it doesn't often do that. Most young koalas stay with their mothers until they are two or three years old.

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.

    It was a fine spring day for a walk down the street. A mother and her two little girls walked along the sidewalk, happily laughing. 1 , hundred small alien ships appeared on the horizon. It started 2off some electric rays. People screamed. Children cried. There was 3 everywhere.

    There came the tingling sound of glasses, breaking everywhere. People fled in every 4. The mother was jostled(推) and lost hold of her5. She raced around shouting and crying for her kids. She thought they were lost to her forever.

    The sky cleared up. The aliens were 6. But there was no sight of the children. Heart-broken, the mother reached her house, crying her eyes out.

    She heard someone 7 "Mamma". Was it her kids? She frantically(发狂似地)8 around. There they were! Hand in hand they came running towards her. She ran towards them too. Her arms stretched out 9 to hug them. She opened her eyes. The pillow was wet. It was a dream!

    She raced to the kids' bedroom. Her lovely girls were sleeping peacefully. She kissed both their foreheads and 10"love you".

    As we all know, the environment around us is getting1. In some places we can't see fish swimming in the river or trees on the hills. Some people even have no clean water2.Recently, a new lifestyle called low-carbon life is3every corner of our country. It is such an important project4I can't wait to express my ideas on how to promote (推动) it.

    First, we should5a no-car day every week in our school. Because cars not only cause serious air pollution but also waste energy. On the no-car day, neither students nor teachers6to drive to school. At the same time，just walk or run. Use our bikes and enjoy the fun.

    Second, we had better 7 plastic bags any more. No one can stand the "white pollution", so it is wise to use cloth bags8can be used again and again.

    9, one thing that we should keep in mind is that every big thing comes from small details. So, as students, we should10lights when we leave, use both sides of paper, and reuse our textbooks and so on.

    All in all, just set our mind to these: no-car days, no plastic bags, and no waste. Let's do it now.