When it comes to science, math and reading, Singapore's teens are the best in the world, according to a international education survey published Tuesday.
원문출처 : http://www.cnn.com/2016/12/06/world/pisa-global-education-rankings/index.html
원문출처 : http://www.cnn.com/2016/12/06/world/pisa-global-education-rankings/index.html