VOA慢速英语:Where Are the Best Educated Americans?

ranking – n. a list of things that are ordered according to their quality, ability or size

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

graduation – n. the act of receiving a diploma or degree from a school, college, or university

bachelor’s degree – n. a degree that is given to a student by a college or university usually after four years of study

location – n. a place or position