The teacher’s question confused him.老师的问题令他迷惑不解。

congress n.国会，议会

Congress has rejected the recent presidential proposal on firearms.国会驳回了总统最近提出的关于武器问题的提案。

conjunction n.联合，关联

There is a team of writers working in conjunction with each other on the book.有一批作家正在齐心协力完成这本书。

conquer vt.征服，战胜

Bill finally conquered his bad habit of laughing during sad movies.比尔最终克服了在看悲剧电影时大笑的坏习惯。

The country's wild ambition for the conquest of the world made all of its neighbors nervous.这个国家则敝界的野心，令所有周边国家非常紧张。

conscience n.良心，良知

My conscience made me help the poor old lady.出于良知，我帮助了那位贫困的老妇人。

conscious adj.有意识的，神志清醒的；意识到的

I fainted briefly but was conscious again in a few seconds.我突然晕倒， 但在几秒钟之后又恢复了意识。

Human should be more conscious of the influence they have on ecosystems.人类应该更加意识到自己对于生态系统的影响。

consequence n.结果，后果

I missed the bus this morning and as a consequence I was late for work.我今天早上没有赶上公共汽车，结果上班迟到了。

conservation n.保存，保持，保护

The government encourages the conservation of natural gas.政府鼓励大家节约使用天然气。

conservative adj.保守的，谨慎的；守旧的

The builder's conservative estimate of the time required to remodel the kitchen was six weeks.施工人员对改造厨房所需时间的保守估计是六周。