VOA慢速英语:从阿拉斯加开始计算美国人

census – n. the official process of counting the number of people in a country, city, or town and collecting information about them

form – n. a document with blank spaces for filling in information

survey – n. an activity in which many people are asked a question or a series of questions in order to gather information about what most people do or think about something

assign – v. to give out something or to provide someone with something