词汇：

人口老龄化 aging of population

人口出生率 birth rate

社会保险 social insurance

全民健身运动 nationwide fitness campaign

大龄青年 single youth above the normal matrimonial age

独生子女 the only child in a family

单亲 single parent

青春期 puberty

青少年犯罪 juvenile delinquency

暂住证 temporary residence permit/card

民工 migrant laborers

相定迁户 a relocated unit or household

家政服务 household management service

盗用公款 embezzlement

社区月服务 community service

居委会 neighborhood committee

和谐并存 harmonious coexistence

性别歧视 gender/sexual discrimination

年龄歧视 age discrimination

工作歧视 job discrimination

盗版 pirated/illegal copies

性骚扰 sexual harassment

走私 smuggling

享乐主义 hedonism

道德法庭 court of ethics

句型：

only to find/see

例句：He spent almost all his money to buy the hen which was said to be able to lay gold eggs,only to find it could not lay eggs at all.

It is undoubted that/There is no doubt that...

例句：There is no doubt that war can be avoided if we get down to peace talk.

chances are that...

例句：Chances are that she has already known it, and there is no need for us to keep the secret.