英语听力精选进阶版 13769

America's changing identity

Vocabulary

census¹ bureau

office of national statistics

ethnic² and racial minorities

people whose racial origin is from another country e.g. Mexicans who live in the USA

shift

change

steepest

most extreme

account for

explain why

a sweeping change

a wide-ranging difference

the racial make-up

the balance of people of different ethnic origin

demographic

characteristics of a population

diverse

varied

trends

tendencies

1 census   

n.(官方的)人口调查，人口普查

参考例句：

• A census of population is taken every ten years.人口普查每10年进行一次。
• The census is taken one time every four years in our country.我国每四年一次人口普查。

2 ethnic   

adj.人种的，种族的，异教徒的

参考例句：

• This music would sound more ethnic if you played it in steel drums.如果你用钢鼓演奏，这首乐曲将更具民族特色。
• The plan is likely only to aggravate ethnic frictions.这一方案很有可能只会加剧种族冲突。