목록2020/02/13 (1)
나무 숲
2020수능특강 영어 6강 본문
6강 1 Aging is an economic challenge because unless retirement ages are drastically increased so that older member of society can continue to contribute to the workforce (an economic imperative that has many economic benefits), the working-age population falls at the same time as the percentage of dependent elders increases. As the population ages and there are fewer young adults, purchases of bi..
외국어/고등영어자료
2020. 2. 13. 11:53