Your body is special﹣no two people in the world are alike． 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 houses the most valuable part of your body﹣your brain． As you are reading， your eyes send pictures to your brain which makes meaning from what you see． Your brain helps you to remember and think， and make sure your body is doing what it should．

What is my skin for？

Your skin covers your body． In most parts of your body， the skin is just as thick as half a centimeter． If you have your skin cut， it will have a quick cure and stop viruses（病毒）from entering 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 a lot﹣whenever you cry or smile， eat or speak， walk or dance， etc．

Why do I breathe？

Your body needs to take in oxygen from the air and give out the unwanted carbon dioxide in the body． When you breathe， air comes through your nose and mouth into your lungs where oxygen flows to different parts of your body．

What does my heart do？

Your heart is a very special muscle． It is slightly 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 forces blood to move around your body．

46． Which part of your body helps you to remember and think？　　

A． Head．

B． Heart．

C． Skin．

47． The underlined word "houses" in the passage probably means　　．

A． creates

B． stores

C． builds

48． If you have no skin covering your body， what would happen？　　

A． Our body can be guarded by our hair．

B． Viruses can't enter our body easily．

C． We can't feel the changes in temperature．

49． What is true fact about your body？　　

A． Your heart is not the same size from birth．

B． We take in carbon dioxide to stay alive．

C． Our muscles stop working when we nod．

50． Which is the best title for this passage？　　

A． What Your Body Needs

B． How Your Body Works

C． When Your Body Moves

科目 英语   题型 阅读理解   难度 中等

知识点： 判断推理 科普知识类阅读 内容归纳 文中细节