考研英语阅读题型解析之词汇题

n do these socially acceptable and apparently constructive uses of a substance become misuses? First of all, most substances taken in excess will produce negative effects such as poisoning or intense perceptual distortions. Repeated use of a substance can also lead to physical addiction or substance dependence. Dependence is marked first by an increased tolerance, with more and more of the substan
<<上一页下一页>>

首页 > 电子期刊 > X > 新东方英语

本站访问人数：