阿摩線上測驗
47. What is the main topic of this article?
(A) A type of head trauma caused by certain sports.
(B) The results of study done on concussions.
(C) Ways to reduce brain injuries in professional sports players.
(D) The way disoriented sports players conduct themselves.
答案：登入後查看
統計： A(519), B(86), C(103), D(59), E(0) #1589737
統計： A(519), B(86), C(103), D(59), E(0) #1589737
