contract
　　n.~(with sb.)(for sth./to do sth.)合同，契约enter into/make/sign a contract(with sb.)(与某人)签合同 vi.①缩小，收缩The economy has contracted by 2.5%.经济收缩了2.5%。②订合同，订契约The city contracted for a library with their firm.市政当局和他们公司订立了修建图书馆的合同。vt.①感染(疾病)，染上(恶习)I contracted a cold.我得了感冒。②订(约)
　　辨析distract contract subtract
　　①distract v.分神，打扰;扰乱，迷惑。
　　②contract v.收缩;订约，签合同。
　　③subtract v.减去，扣除。

　　contradiction
　　n.①矛盾，不一致; 自相矛盾的说法a contradiction between her words and actions言行不一致②否认，反驳The boss will not tolerate any contradiction.老板不能容忍顶嘴。
　　真题例句：There is no contradiction in my going on to say that a teacher should be a bit of an actor.(2003.6看短文回答问题)
　　译文：这与我要说的教师应该有点表演的技能并不矛盾。

　　convention
　　n.①习俗，惯例= custom：It is silly to be a slave to social conventions.对社会习俗盲从是愚蠢的。②公约，协议= treaty：conclude a military convention缔结军事协定③(正式)会议，(定期)大会hold a convention 召开大会
　　真题例句：It is important to distinguish between the rules of grammar and the conventions of written language.(2003.9词汇63题)
　　译文：区别语法规则和书面语习惯用法很重要。

　　conversation
　　n.~(with sb.)(about sth.)谈话，交谈He was deep in conversation with his accountant.他与会计深入交谈。

　　conversely
　　ad.相反(地)In real life, nobody was all bad, nor, conversely, all good.在现实生活中，并不是所有人都坏，相反也不是所有人都好。

　　convict
　　vt.~ sb.(of sth.)(经审讯)证明……有罪，宣判……有罪The criminal was convicted of murder.歹徒被判谋杀罪。 n.囚犯The escaped convict has been caught by the police again.越狱的逃犯已经再次被警方抓获。

　　conviction
　　n.①~(that…)确信，坚定的信仰religious/political convictions宗教/政治信仰 ②说服，信服Her words carried conviction.她的话令人信服。③定罪，判罪They have no previous convictions.他们没有前科。

　　correct
　　a.①正确的，对的= right：Do you have the correct time? 你的表准吗?②合适的，符合的，得体的Such casual dress would not be correct for a formal occasion.这样的便服不宜在正式场合穿。vt.改正，纠正;指出(某人)的错误或过失correct my pronunciation矫正我的发音