attribute: 归因为
contribute:贡献，投稿
brisk: 轻快
bristle: 硬毛，气势汹汹
barter: 物物交换
banter: speak to or address in a witty and teasing manner.
blight: withered, blast
boom: to make a deep hollow sound; to grow or cause to grow rapidly esp.
Calumniate: defame, malign libel
Culmination: reach the highest point Fulmination: 攻击，指责
Canvas：油布
Canvass: to seek orders or votes: solicit
Cataclysm: a violent change or upheaval
Catalysis: 加速
Cessation：终止，(短暂)停止
Cession：割让，转让
Concession：让步，特许权 Secession：脱离，退出
Cater：迎合，承办
crater：火山口，弹坑
Circumscribe：限制 Proscribe：禁止
Compass: an enclose space Compassion: pity
Competent：胜任的，有资格的
contentious：引起争议的
Contiguous: being in contact
Contingent: possible; happening by chance conditional
Consensus：全体意见一致
Censure：责难
Conversant: 精通
Convergent：会聚的
Confluence: the meeting of two or more streams Influence:影响 Refluence：逆流
Consign：托运 Resign：辞职
Crate：板条箱
Crave：渴望得到
Craven：胆怯的
Crayon：彩色笔;粉笔或其绘画
Canyon：峡谷
Cozen: chest, defraud Cozy: snug, comfortable
Curb: hold in or back Curd: the thick protein rich part of coagulated milk Curdle:
spoil, sour
Declamation: speech Acclamation: shouted approval
Duration: 持续的时间 Induration：硬化
Denounce：指责，揭发 Renounce：宣布放弃，抛弃
