精选优质文档-倾情为你奉上2013北京中考）选择性阅读D篇The willful blindness in hockey toward concussions (头部撞击) has dropped. Hockey Canada has followed the lead of USA Hockey in preventing body checking (身体拦截) below age 13. A bad head injury of Sidney Crosby, the hockeys greatest star, opened the eyes of hockey people everywhere. This countrys children have been facing similar danger at early ages, and Hockey Canada had to deal with a deep worry in the minds of Canadians to make the rule change. The liking for
