6 .

Health is wealth, not only for adults but for teens. Why do we get sick? Let’s read this passage.

We all get sick. It’s unavoidable, ______ we can do things to reduce how often we get sick and how long we stay sick. Why do we get sick? You usually get sick when something ______ gets inside your body, like germs and viruses.

What are germs and viruses? They are little creatures, kind of like animals or plants. They are so small that we can’t see them without some _____ like we wash our hands often. When someone coughs, sneezes, or touches something, germs are _______. If we touch something dirty or eat something without washing our hands, those germs may _____ our bodies. Once those germs get inside you, your body has to fight them. Your body has antibodies (抗体) to fight certain sicknesses and white blood cells (白细胞) to fight infections (感染). _______, it can still take days for your body to beat those bad germs and viruses!

What happens when you are sick? To start with, you might feel _______. That’s because your body is using its energy to make more white blood cells and antibodies to fight germs and viruses. You might have a ______. That’s your body way of fighting infections by raising the temperature to make germs and viruses too ______ and uncomfortable. Runny noses, sneezing and coughing are all your body’s reactions to the germs. Medicines make you a little more comfortable.

To ______ getting sick, wash your hands and eat healthy foods. A strong body is less likely to get sick and become well more quickly. Get enough sleep and proper exercise. Stay healthy, stay happy.

8 . When the flu (流感) hits you, it often seems to be most severe (严重) at night. You might have a cough, a blocked nose, or a sore throat that just won’t let you sleep. Have you ever thought about why the flu feels so bad at night?

One reason has to do with your body’s daily clock. At night, when you’re trying to rest, certain small parts in your body that fight off sickness become more active. They’re working hard to get rid of the sickness, but this can make you feel worse. It’s like your body is having a silent battle with the flu, and you feel more coughs, stuffy nose, and aches because of it.

Another factor is how lying down affects you. When you’re up and moving around, the force that pulls everything down helps mucus (粘液) clear away. But in bed, mucus collects in the back of your throat, causing that itchy (痒的) feeling that makes you cough. This is called nose drip after lying down and can be really annoying when you’re trying to sleep.

So what can you do about it? Drinking lots of water throughout the day can help by making mucus thinner and easier to clear. Before bed, a hot shower might also help open up your nose. And when it’s time to lie down, try lifting your head up with a few extra pillows (枕头). This can prevent mucus from building up in your throat and help you breathe more easily.

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