When throwing away rubbish, do you know which dustbin it should go in? Have you ever noticed the differently-colored dustbins on the street?

Some of you might not be able to answer this question. However, it's actually quite important to know how to sort(分类)your waste. Not knowing how to sort waste can make it harder to save energy and protect the environment.

If you don't sort your rubbish, all of it will go to a landfill(垃圾清理场)and be buried together. These landfills can take up large areas of ground that could have been used for planting trees or crops. The electronic waste you throw away, such as batteries, can pollute the soil and groundwater. Other pieces of rubbish, like the metal part of a pen, can be used to make other things if they are properly recycled.

With this in mind, many cities in China have been running waste-sorting campaigns(活动)in recent years. for example, Shanghai announced in 2018 that within three years(2018—2020), all the people living in Shanghai should sort their rubbish into four groups: wet, recyclable, harmful and dry.

Wet waste is also known as household waste. They are things you don't want but that pigs can eat. Paper, metal, glass and other things that can be reused are recyclable waste.

Many other Chinese cities, including Shenzhen, are using this method to sort their rubbish. Now that you know this, perhaps you can do your part to protect the environment and encourage others to sort their rubbish.

根据短文内容,判断下列句子正(T)、误(F)。

1.If you know how to sort waste, it will help us save energy and protect the environment.

2.Shanghai will achieve the goal of sorting their rubbish into four groups in 2020.

3.The food that we haven't finished eating at home belongs to recyclable waste.

4.Many cities in China are doing waste-sorting work nowadays.

5.The passage mainly tells us how to recycle rubbish.

It is a cold and dry winter morning. When you wake up, you feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a moment. Could it just be a common cold or the flu(流感) going around?

A cold gives you a runny nose and cough. But it’s usually easy to deal with. Some take medicine while others drink herbal tea or chicken soup. Usually you feel better after a week.

On the other hand, the flu can be much more dangerous. It usually gives you fever. Sometimes it can cause death. According to an American magazine, the worst flu killed about 50 million people from 1918 to 1919.

Don’t worry. If you get a flu vaccine(疫苗), it can stop you from getting the virus(病毒). Flu vaccines work by giving the body a small amount of flu viruses. This causes your body to have antibodies(抗体). So next time you get the flu, the antibodies should help you.

The flu virus changes every few years. So there are so many types of flu, such as H1N1 and H5N1. The antibodies for one type of flu can’t help us against all types of flu. That’s why we need to get the vaccine every year.

However, good health habits may also help you away from a cold or flu. Washing your hands often stops you from getting viruses easily. It is also important to get regular exercise and eat healthy food. All these can help you strengthen your immune system (增强免疫系统).

1.If you have a common cold, usually you’ll feel better after ______ days.

A.7 B.10 C.15 D.20

2.What does the underlined “it” refer to?

A.Herbal tea. B.Chicken soup. C.A flu virus. D.A flu vaccine.

3.We need to get a flu vaccine every year because ______.

A.the flu often kills us B.the antibodies can help us against all types of flu

C.the flu virus changes every few years D.you don’t need to take any medicine after that

4.The following ways can help stop the flu EXCEPT ______.

A.staying indoors B.getting regular exercise

C.eating healthy food D.washing our hands often

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