We all need a healthy environment, but we produce waste every day and it does harm to our environment. {#blank#}1{#/blank#} we are young, we can still do something to help. In fact, even the simplest everyday activities can make {#blank#}2{#/blank#} real difference to the environment. Here are some ideas for you to live a green and healthy {#blank#}3{#/blank#}.

    Remember these three words: reduce, reuse and {#blank#}4{#/blank#}.

    Reduce means "use less". If we stop wasting, we can not only {#blank#}5{#/blank#} money but also reduce pollution and waste. Before we buy something new, think whether it is really necessary or maybe the old one will be just as good! If {#blank#}6{#/blank#}, choose local products and try not to buy too many things from abroad when we do need something.

    Reuse means "use again". Use things for as long as possible. When we buy things, {#blank#}7{#/blank#} sure that they can last a long time. We should take care of them so that they will last long and we should repair them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It's better to use a china(瓷器) cup and lunch box because you can use them {#blank#}8{#/blank#}.

   Recycle means "change things {#blank#}9{#/blank#} something else". Although it takes energy to do this, it's better than throwing things away or burning them. We can do this in many ways. For example, we can find out {#blank#}10{#/blank#} can be recycled in our neighborhood and take part in the recycling programs and we can also buy products made from recycled materials, such as recycled paper to help save trees.

—You must be kidding. I felt _______ among those successful people.

    As we know, all living things have to eat food. For a man, a tiger, a fish, a bird, or even a worm, food is {#blank#}1{#/blank#} (必需的). Generally speaking, all living things are sure to {#blank#}2{#/blank#} (死) without food. In every part of the world, many different kinds of animals share living places and live in communities (群落) {#blank#}3{#/blank#} (一起). They are connected in a food chain(链).

    Within a food chain， some living things are producers and some are consumers (消费者). Plants are producers because they use {#blank#}4{#/blank#}(阳光)，soil and other things to make their own food. Animals are consumers because they have to eat other animals or plants.

    There are four{#blank#}5{#/blank#} (不同的) kinds of consumers in the animal kingdom. A carnivore is an animal that only eats flesh(肉). A herbivore is an animal that only eats plants. An omnivore is an animal that eats {#blank#}6{#/blank#} (都) meat and plants. A scavenger is an animal that eats dead animals.

    Look at the picture. It is an {#blank#}7{#/blank#} (例子) of a food chain. The food chain {#blank#}8{#/blank#}(显示) the order that animals eat each other in a community. In the picture, you can see what animal or plant is food for {#blank#}9{#/blank#} (另一个) animal. See? A leaf is food for a grasshopper, which then becomes food for a hungry mouse. The mouse is food for a snake. The snake is eaten by an eagle. {#blank#}10{#/blank#} (用) this way, all of these living things are connected.