Your body is special﹣no two people in the world are the same．Although you are different from everyone else，you have exactly the same body parts as the people around you，doing different jobs that keep all of us alive．
What is inside my head ？
Your head holds the most valuable part of your body in it﹣your brain．As you are reading，your eyes send pictures to your brain which makes meaning from what you see．Your brain heIps you to remember and think，and makes sure your body is doing what it should do．
What is my skin for ？
Your skin covers your body．In most parts of your body，the skin is just as thick as 0.5cm．If you cut your skin，it will have a quick cure（治愈）and stop viruses（病毒）from getting into your body．Your skin also helps you feel the heat and coldness of the environment around you．Hair grows from inside the skin．When you feel hot，extra heat comes out through your skin．As a result，your body temperature drops．
How do I move ？
Muscles（肌肉） are found in most parts of your body． They work with your bones to help you move﹣ whenever you cry or smile， eat or speak， walk or dance， etc．
What does my heart do ？
Your heart is a very special muscle． It is a little bigger than your fist（拳头）and grows bigger as you do． If you place your hand on your heart， you will feel your heart beating which pushes blood to move around your body．
Organ（器官） |
Function（作用） |
Brain |
★The most valuable part of your body is （1） and it can make your body work． |
Skin |
★Skin can prevent viruses （2） ． ★Skin can help you feel the heat and coldness of the environment． ★Skin can make your extra heat come out （3） your body temperature drops． |
Muscles |
★（4） both help people move． |
Heart |
★Your heart beating （5） your blood move around your body． |
Trash collection is a problem for Curitiba． First， the city has only one landfill．Second， its garbage trucks do not fit on some of the streets in the city's low﹣income （低收入） neighborhoods．Curitiba knew the solution lay in getting everyone involved （参加）．
In 1989， the city started a recycling program called Garbage That Is Not Garbage． The city set up a central recycling center for sorting （把…分类） recyclable materials， food﹣based and waste．
Colorful cartoon characters were symbols of different kinds of recyclable materials， which could help children get to know the importance of recycling． Collection bins were the same colors as the cartoons， reinforcing （加强） the message．People made money by picking up the trash at these bins and taking it to the center for processing． Today， Curitiba claims to have the highest recycling rate of any city in the world．
Cambio Verde，the Green Exchange program，and Compra do Lixo，the Buying of Garbage program，are successful recycling programs in Curitiba． They get low﹣income residents （居民） to join in the city's recycling program by having them transport trash from neighborhoods that are hard for garbage trucks to reach．
Depending on what they deliver，people exchange their trash for cash，food and services．Their way of life is improved， and the city is better able to manage its trash． These programs are one way Curitiba has gotten creative as a green city． It shows how involving everyone can make green living possible．
| Trading in on Trash |
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| Paragraph |
Main idea |
Supporting details |
| One |
（1）_____ Curitiba's trash collection problem |
There is only one landfill in Curitiba． （2） cannot reach every corner of the city． |
| Two |
Actions and influences of Garbage That Is Not Garbage |
A central recycling center（3） by the government． Kids understood the importance of recycling better． Curitiba's recycling rate is pretty high． |
| Three |
Cambio Verde's and Compra do Lixo's ways of involving low﹣income residents |
They make low﹣income residents（4） ____from their neighborhoods to certain places． |
| Four |
Results of recycling programs and conclusion |
People's way of life is improved． Curitiba can manage its trash better． Everyone（5）____ in making green living possible． |
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Bejing Opera， an important part of Chinese culture， （have） a history of over 200 years．
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