Rambunctious third-graders filled a classroom in Seattle on a crisp autumn day. One of the students dropped his backpack, and horror ensued.
원문출처 : http://www.cnn.com/2017/06/19/health/child-gun-violence-study/index.html
원문출처 : http://www.cnn.com/2017/06/19/health/child-gun-violence-study/index.html