Toasty（溫暖的） Ears If your ears got very cold in winter，what would you invent to keep them warm？Chester Greenwood's cold ears were a big problem.So he invented earmuffs.Chester lived in Farmington，Maine.He liked to play outside in winter，but he could not stay outside for long.After just a few minutes，Chester's ears would be painfully cold.They would turn bright red.Then purple，then white，then blue.
    In 1873 for his fifteenth birthday，Chester got a pair of ice skates.He couldn't wait to try them out.Just after he got on the ice，a cold wind hit his ears.He had to run back home in a hurry.By the time he got there，his ears were already blue.
    The next day he tied a heavy wool scarf around his head.His ears were finally warm.But the scarf was very scratchy （粗糙扎人的）.He had to turn around and go home again.
    On the third day，Chester tried again.This time he made loops（圈） out of wire.Then he asked his grandmother to sew a piece of beaver fur（海貍皮毛） on one side of each loop.On the other side of the fur，she sewed a piece of black velvet（天鵝絨）.She then sewed the whole thing to Chester's cap.His ears stayed warm and comfortable the whole time when he skated.
    Chester's neighbors wanted warm ears，too.It wasn't long before Chester's mother and grandmother were busy making ear covers.
    Greenwood's Ear Protectors became a big money-making business.When Chester opened an earmuff factory，F(xiàn)armington became the earmuff capital of the world.
    Chester Greenwood invented many other things.However，he may be best known for his earmuffs which are still popular today.
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Earmuffs
Invention	Earmuffs are something that can protect your ears （1） from from the cold and are still popular today.
Who（2） invented invented earmuffs ？	Chester Greenwood，from Maine，was born in Farmington.
Why did he invent them ？	● In winter，his cold ears were a big problem. ● If he stayed outside for （3） several several minutes，his ears would be in different（4） colors colors .
（5） How How did he come up with the idea？	● He got a pair of ice skates as a present （6） at at the age of 15. ● His ears became blue after （7） trying trying the ice skates out in the cold wind. ● The next day，he wore a wool scarf around the head，but scratchy scarf made him （8） uncomfortable uncomfortable . ● His grandma helped him make a special earmuff，with beaver fur on one side，and black velvet on the other side.To his surprise，it worked. ● Chester's neighbors（9） also also wanted his kind of earmuffs，so Greenwood（10） made made lots of money by producing earmuffs for them. ● The business became a big success.So was Cjye.aister.He was famous for his earmuffs.