1. cavity洞 穴

　　I’m afraid there won’t be time to do aother tooth today, make sure you don’t eat anything like steaks for the next few hours,and we’ll fill the other cavity tomorrow.

　　All right. Actually, I must hurry to the library to return some books.

　　2. ceremony典礼 仪式

　　If the flag just display on such occasions, do not allow the flag to fall to the ground. But let it be carried high up in the air to form a feature of the ceremony.

　　3. cetainly必定 当然

　　Your dog certainly seems to know you’re his master. Did you have to punish him very often when you trained him?

　　I found it’s better to praise him when you obeys and not to be so fussy when he makes mistakes.

　　4. challenge挑战 向…挑战 对……质疑

　　The assignment on physics is a real challenge, I don’t think I can finish it on time all by myself.

　　Why don’t we join in our feet together? It may be easier then.

　　5. chamber室 会所

　　The local chamber of commerce, which represents the industry in the area, hired me as a consultant to do a one-year study on fishing in the Biramichi river and write report for them.

　　6. champaign香槟酒

　　Ann, how much champaign did they drink?

　　A lot, it was more popular than mineral water.

　　7. champion冠军 捍卫者 拥护者

　　Though we didn’t win the game, we were satisfied with our performance

　　You did a great job, you almost beat the world champion. It was a real surprise to many people.

　　8. championship锦标赛 冠军

　　His teams often won enough games to qualify for the final rounds, but

　　they almost aways lost in the finals. As a result, Wilt chamberlain became

　　determined to win one more championship before he retired.

　　9. chance可能性 机会 机遇

　　When dos the football team have the best chance to win the World Cup?

　　10. change 改变 变更 变化 零钱

　　Susan, I’m going to change the light bulb above dining table, will you hold the ladder for me?

　　No problem. But be careful while you’re up here.

　　Change the part of life, but rapid change, said scientist Georgy Woodwill, is the enemy of life.

　　11. character性格 特性 人物

　　Hollywood films generally have one thing in common conflict. The main character wants something very badly and will do anything to get it. The opponent tries to stop the main character from achieving the goal.

　　12. characteristic典型的 特性 特征

　　Sue accepted each assignment cheerfully, and when problems arose, she responded with his characteristic,’No problem, I can handle it.”

　　13. charge价钱 管理 指控

　　Mary is in charge of the art and music section, and charles the post page, what about you?

　　I’m responsible for the editorials.