Do you live in an area hit by snow in winter? How do you deal with it? If you do, you may experience blizzards(暴风雪). A blizzard is a heavy snow with strong winds. Now let's take a closer look at it.
Blizzards make it difficult for people to travel. Blizzards also make it hard for people to buy food and other daily needs. Blizzards can also lead to health risks, including frostbite(冻伤). Well, it is really necessary to learn something about how to protect yourself in such terrible weather.
You should always pay attention to the weather report. Then you can get well prepared for blizzards. You can change the travel plan in time before the blizzards come. Prepare what you need to keep warm, and save enough food and water for your family. If your house is not strong, move to a safer place quickly, In this way, you won't get hurt if it is damaged(毁坏）by heavy snow.
If you are indoors, try not to go out. Don't go to clean the snow so as not to lose temperature. Use heating tools in a right way when staying indoors. If the coal is used for heating, keep the windows open to avoid carbon monoxide poisoning(一氧化碳中毒）. If you have to go out, you need to wear thick clothes to keep warm. And you'd better wear proper shoes to stop yourself from falling down. Besides, be careful of downed power lines, because they can be dangerous for people on foot.
These are some basic knowledge about blizzards, and you need to keep this knowledge in your mind. Protect yourself during blizzards.
()21. How does the writer start this passage?
A. By listing numbers.
B. By giving examples.
C. By explaining differences.
D. By asking questions.
()22. Which question can help us find out the writer's purpose of the second paragraph?
A. How can people live in the blizzard?
B. What should people do with blizzards?
C. What influences can a blizzard bring?
D. How do blizzards form?
()23. What does the underlined word "it" in the third paragraph refer to?
A. The house.
B. The travel.
C. The food.
D. The plan.
()24. Why should we use heating tools in a right way when staying indoors?
A. To give us sunlight.
B. To keep us safe.
C. To show us ways.
D. To teach us lessons.
()25. Where can we read this text?
A. In a book about illnesses.
B. In a newspaper about culture.
C. On a website about hard life.
D. In a magazine about weather.

21. D 22. C 23. A 24. B 25. D