分类：教育/科学-外语学习
问题：翻译短文Arecentstudy,publishedinlast 
A recent study, puished in last week's Journal of the American Medical Association, offers a picture of how dangerous it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers is three times as likely to have a serious accident as a A recent study, puished in last week's Journal of the American Medical Association, offers a picture of how dangerous it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers is three times as likely to have a serious accident as a teenager driving alone.   The author also found that the death rates for teenage drivers increased dramatically after 10 pm, and especially after midnight. With passengers in the car, the driver was even more likely to die in a late-night accident.    Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says the higher death rates for teenage drivers have less to do with “really stupid behavior” than with just a lack of driving experience. “The basic problem,” he says, “is that adults who are responsible for giving out licenses fail to recognize how complex and skilled a task driving is”.Both he and the author of the study believe that the way to mitigate (缓解) the problem is to have stepss set up so-called graduated licensing systems(驾照考试体系), in which getting a license is a process with several steps. A graduated license requires that a teenager first prove himself able to drive in the presence of an adult, followed by a period of driving with night of passenger restrictions(限制) before graduating to full driving rights.Graduated licensing systems have reduced teenage driver crashes, according to recent studies.
回答：最近，发表在美国医学协会杂志上的一项研究中刊登了一幅照片，显示了搭乘青少年司机驾驶的是件多么危险的事。确实，一位16岁的青少年司机再搭载三位或以上的乘客，发生重大车祸的可能性是少年司机独自驾车的三倍。文章的作者还发现青少年司机的车祸死亡率在晚上10点以后有显著的增加，尤其是过了午夜以后。如果车上再有乘客的话，该司机就更有可能死于深夜车祸。罗伯特.福斯是北卡罗莱纳州大学公路安全研究中心的一位科学家，他说青少年司机车祸的高死亡率与其说与“纯粹的愚蠢行为”有关，倒不如说就是因为缺乏驾驶经验。“根本的问题，”他说，“是负责颁发驾照的成年人没能意识到驾驶汽车是一项多么复杂和需要熟练技术的活。”他和这项研究的作者都认为缓解这个问题的方法就是由stepss 建立所谓的“层次驾照考试体系”，在这个体系中获得驾照的过程分成几个阶段。分层次驾照要求青少年首先证明自己可以在成年人监管下开车，接下来的一段时间夜间开车载客受限制，直至最后获得完全的驾驶权利。根据最近的研究，分层次的驾照考试体系降低了青少年司机车祸的发生。