①Wool is a great natural material that has been used by humans. It comes from the soft coat of sheep. Humans have been wearing wool for over 12,000 years. Today, more than 1.3 billion sheep around the world are used each year for woollen products, like sweaters and scarves.

②Why do so many people like woollen products? One of the great things about wool is that it is a fantastic insulator. This means it keeps us warm when it’s cold outside. It also has tiny air pockets that trap (锁住) heat, making it perfect for those cold days.

③Another advantage of wool is that it is breathable. It allows air to pass through, keeping us cool in the summer as well. Unlike other materials, it can prevent us from overheating, and make us feel comfortable.

④Wool is not only warm and breathable, but it is also durable (耐用的) and long-lasting. It’s strong enough for outdoor activities like hiking or playing in the snow. Woollen clothes can be passed down from one generation (一代) to another, creating a beautiful connection between family members.

⑤Making wool products requires a lot of efforts and a series of processes, which start with cutting. The sheep farmers cut the wool off the sheep completely by hand in spring. Don’t worry: cutting is safe and painless for the sheep, just like getting a haircut! After the cutting, hundreds of kilos of wool are packed together. Once the wool is collected, it goes through a process called scouring. It means wool is washed to remove any dirt and oil. Then the wool is made into yarn (毛线), which is used to make different woollen products. After the yarn is coloured, skilled workers make it into various products.

⑥Wool is made into all kinds of woollen products after processing and is used widely in our daily life.

【小题1】How does the writer show that wool is a great material in Paragraph 1?

A．By telling stories.

B．By explaining ideas.

C．By showing facts.

D．By comparing reasons.

【小题2】What is the advantage of wool according to the passage?

A．It can be used for a long time.	B．It can stop air from passing through.
C．It can produce and give out heat.	D．It can be made into products easily.

【小题3】Which picture correctly shows “scouring”?

A．

B．

C．

D．

【小题4】Which is the structure of the passage?

A．

B．

C．

D．