精选优质文档-倾情为你奉上外研版高中英语必修一阅读理解专项练习题（含答案）A so-called “smart drug” intended to improve peoples cognitive (认知的) function to protect the brain from altitude sickness.Visiting high-altitude sites for work, spot, religious pilgrimages and military can result in cognitive effects, including memory loss and attention difficulties. Theres little you can do to prevent these symptoms except acclimatize -but this takes time and doesnt always work. A drug called oxiracetam might be the answer.S
