12月英语六级考试历年真题高频词汇（6）

　　51. chronic a. 慢性的;严重的

　　52. circulation n. 循环; 发行(量)Reader has the largest ~ in China.

　　53. climax n. 高潮 the ~ of the play

　　54. cling to v. 紧紧抓住， 依恋;坚持，墨守The baby clung to his mother./ ~ to the hope that....

　　55. coincidence n. 巧合

　　56. collaboration n. 合作 in ~ with

　　57. collide v. 相撞; 冲突 The two opinions ~ with each other.

　　58. commence v. 开始

　　59. commute v. 乘车上下班 I have to ~ between the university town and the downtown area.

　　60. compact a. 紧凑的, 结实的 a ~ car/office