下载APP
举一反三
【单选题】E armuffs (耳罩) were invented because of a Christmas present. I n 1873, Chester Greenwood received a pair of ice skates (溜冰鞋) for Christmas. When he skated in the December cold, his ears hurt. S o he p...
A.
E armuffs （耳罩） were invented because of a Christmas present.
B.
C hester ’ s earmuffs kept his ears warm.