It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch.

What is this? Your skin（皮肤）, of course! What does you skin ask for return for all the wonderful things it does? Just a little care!  So let’s learn how to take care of our skin.

Like the heart and stomach, your skin is an organ （器官）．In fact, it is the largest organ in your body．Unless there's a problem, you may not think about your skin very much．But skin has an important job to do．

Your skin is protecting you．Your skin keeps you from getting sick．When you take care of your skin, you are helping your skin do its job．Taking care of your skin today will help you have no problems in the future．

Clean skin is happy skin! One simple way to take care of your skin is to keep it clean．Keeping your hands clean is very important．When washing your hands, use warm water．Wet your hands, and then use soap．You should wash your hands carefully everywhere．

You'll also want to use warm water, but not too hot, when you take a bath．Use soap to clean your body．Don't forget under your arms and behind your ears! Your face needs attention, too．It's a good idea to wash your face once or twice a day with warm water．

1.We can infer（推断出）from Paragraph 3 that __

2.Which of the following best describes your clean skin?

3.Why does the writer think we should try to take care of our skin today?

4.What does this passage mainly talk about?

Germs(细菌) are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air!

Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.

Warmer Weather Brings Germs

The world’s weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes(蚊子), carry dangerous germs. These germs cause headaches(头疼), fever, and can even kill people.

Under Your Skin

Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too, they enter(进入) your body when you touch your eyes, nose, or mouse.

Fighting Germs

Your immune system(免疫系统) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies. Antibodies help your body find and stop germs.

What can you do to fight germs? You should wash your hands with soap(肥皂) and water. Soap kills many germs, and water washes them away.

1.According to the text, insects ___________.

2.The underlined word “there” refers to _______.

3.What do antibodies do?   

4.Which can be the best title for this text?  

“If we don’t often wash our hands, we can pick up viruses（病毒）form many places and make ourselves ill,” a man from CDC says. Doctors always say every time when you touch your eyes, nose or mouth, you may be ill. In fact, one of the common（平常的） ways of catching a cold is by rubbing（擦拭）their noses or their eyes when there are viruses on their hands. If you don’t often wash your hands, especially when you’re sick, you may spread the viruses to others. You should wash your hands in these situations:
1. After using the washroom
2. After rubbing your nose or coughing.
3. Before eating or making food.
4. After touching animals.
5. After visiting a sick man.
6. When your hands are dirty.
There’re right ways to wash your hands. Follow these things to keep your hands clean:
1. Use warm water (not cold or hot).
2. Wash for 15 seconds.
3. Wash well under warm running water and dry them with a clean towel.
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