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You probably count on your daily jolt of caffeine to wake up your brain and stay sharp all day long. But downing that coffee, tea, cola, or chocolate bar may be giving you a leg up in another unexpected way: It can improve your proofreading skills, according to a new study. 也许你现在每天要靠咖啡来醒脑、醒神。但其实咖啡、茶、可乐和巧克力棒还能在其他方面给你意想不到的帮助：一项最新研究表示，它能帮你提高你的校正能力。 In the study, published in the Journal of Experimental Psychology: Applied, researchers asked 36 college students who consumed low levels of caffeine -- about a half-cup of coffee a day -- to do a "language task." The students were given 5 minutes to read a one-page news story, and needed to identify and correct as many spelling and grammatical mistakes as they found in that time. 在《实验心理学期刊》上发表的文章：研究者让36名对咖啡摄入程度较低的大学生——每天咖啡摄入量低于半杯——做一个“语言测试”。给这些受测试者5分钟时间来读一篇长度约为一页的文章，让他们找出并更正文内的拼写和语法错误。 Forty-five minutes before taking the proofreading test, students were randomly given a capsule containing one of four doses of caffeine: none, 100 milligrams, 200 milligrams , or 400 milligrams. | 
