cause
　　n.①原因，起因the cause of the fire火灾的起因; cause and effect因果 ②~(for sth.) reason 理由;缘故 There is no cause for anxiety.不必忧虑。③事业，(奋斗的)目标the cause of justice正义事业 vt.①使发生，引起Smoking can cause lung cancer.吸烟可致肺癌。

　　cautious
　　a.~(about/of sb./sth.)十分小心的，谨慎的She is cautious of telling secrets.她很谨慎, 不会泄露秘密。
　　cease[si?s]
　　n.&v.停止，终止cease to do sth./doing sth.停止做某事;without cease不停地，不断地

　　ceiling
　　n.①天花板，顶棚rooms with high ceilings高顶棚房间 ②(价格、工资等)最高限度，最大限额The government has set a wages and prices ceiling of 10%.政府规定工资和物价提高的最高限度为10%。
　　常用短语ceiling of…最大限额
　　impose/set/put a ceiling(on sth.)规定最大限额
　　raise/lower the ceiling(on sth.)提高/降低某物的最高限度

　　celebrate
　　vt.①庆祝celebrate a victory庆祝胜利②颂扬，赞美poems that celebrate the joys of love赞美爱情的诗 vi.庆祝，过节Let’s celebrate!让我们好好庆祝一下吧!

　　ceremony
　　n.①典礼，仪式a marriage/wedding ceremony 婚礼②礼节，礼仪The queen was crowned with due ceremony女王加冕礼仪很隆重。stand on ceremony拘于礼节

　　certificate
　　n.证(明)书，证明，执照birth/marriage/death certificate 出生/结婚/死亡证书

　　chain
　　n.①链，链条keep a dog on a chain 用链子把狗拴住②一连串，一系列a chain of mountains/circumstances连绵的山/情况③联号，连锁店a chain of supermarkets/a supermarket chain超级市场联号;chain reaction连锁反应④[pl.]枷锁，镣铐the chains of poverty 贫困的桎梏 vt.用链条拴住chain(up)a dog to the tree用链子把狗拴在树上