Once there was a man named Tom. His eyes were in great pain. He visited the best doctors in the world. He also tried different kinds of medicine.{#blank#}1{#/blank#} nothing helped. One day, Tom met a famous eye doctor. He advised the man to look {#blank#}2{#/blank#}only green things for a long time.

    It was a very strange {#blank#}3{#/blank#} (suggest), but Tom wanted to try it. He {#blank#}4{#/blank#}(buy) boxes of green paint and painted everything green in his house. To his surprise, it {#blank#}5{#/blank#} (real) worked! The pain was starting to go away.

    Several weeks later, {#blank#}6{#/blank#} friend in white visited Tom. While he {#blank#}7{#/blank#}(walk) towards Tom's house, Tom came running with a box of green paint and poured(倾倒) all the paint on him. The friend was very angry. Tom first said sorry to {#blank#}8{#/blank#}(he), and then said that he had to do this -- because he needed {#blank#}9{#/blank#}(see) green things only.

    The friend laughed(大笑) aloud after hearing that. "Why did you paint everything green?" he asked. "It would be much {#blank#}10{#/blank#}(easy) if you put on a pair of green glasses! You can paint all things green, but you cannot paint the whole world green!"

    Electricity is a type of energy that was discovered over 100 years{#blank#}1{#/blank#} One of the most common {#blank#}2{#/blank#} (way) to make electricity is changing other energy sources(来源), such as coal, oil, solar, wind {#blank#}3{#/blank#} falling water. You may not even realize that electricity is a huge part of {#blank#}4{#/blank#} (you) everyday life. Basically, it {#blank#}5{#/blank#}(keep) your home and school warm in winter and cool in summer. Without it, you would never {#blank#}6{#/blank#} able to watch your favourite TV show or listen to your MP3 player. Have you ever imagined a world in which you can't {#blank#}7{#/blank#} (turn) on a light, a computer, or even use the phone? So electricity is {#blank#}8{#/blank#}(importance) to us and we need electricity.  That's why it's time to rethink {#blank#}9{#/blank#}(us) relationship with the valuable resource and think about how we can do our part in {#blank#}10{#/blank#} (use) it wisely.

    Round eyes, round head, round ears and round body! He looks like a bear, {#blank#}1{#/blank#} he is not a bear. He's a Koala.

    People in Australia love Koalas. They have set up places for them to live {#blank#}2{#/blank#} (safe). No one kills them for their fur. When a koala is born, he has no fur. The mother koala has a pocket in the front of her body. The baby stays in this warm pocket for six {#blank#}3{#/blank#} (month).

    When the baby koala leaves the pocket, he has much fur. He {#blank#}4{#/blank#} (climb) onto his mother's back. There he learns from his mother how to find food. Mrs koala is {#blank#}5{#/blank#}good mother. But when the baby is naughty (淘气的), she beats {#blank#}6{#/blank#} (he). The baby cries just as a small child does. If he keeps on crying, his mother beats again.

    The koala can't live without a special kind of tree. The tree is the {#blank#}7{#/blank#} (important) to the koala, because it gives him both home and food. For most of the day the koala sleeps in the tree. At night the koala looks {#blank#}8{#/blank#} food. He likes only the bark and the leaves of the tree. He eats nothing else. He eats more than two pounds each night.

    I like the koala best, because I think {#blank#}9{#/blank#}a cute animal the koala is! In the future I want {#blank#}10{#/blank#}(go) to Australia to see the real koala.