【单选题】The following is an abstract, consisting of 5 sentences. Which element does Sentence ④describe?Abstract: ①Research on exposure to television and movie violence suggests that playing violent video game...
【简答题】To produce the upheaval in the United States that changed and modernized higher education from the mid-1860s to the mid-1880s, several causes interacted. The emergence of a half-dozen leaders in educa...