GMAT的6分范文，明确处理了其中的4个错误点：

　　(1) warning只是警告，如果飞行员没注意到，还会相撞；　　

　　First, …if the cause of the problem of midair plane collisions is that pilots are not paying attention to their computer systems or flight operation, the warning system will not solve the collision problem.

　　(2) onboard机载设备不具备强制性、权威性，飞行员可以选择是否执行

　　Second, …If the pilot or flight specialist does not conform to what the warning system suggests, midair collision will not be avoided. 　

　　(3) computerized计算机可能会失灵 　

　　The argument also does not address what would happen in the event that the warning system collapses, fails, or does not work properly. 　

　　(4) commercial airlines没有排除与军队飞机或私人飞机相撞的可能性

　　Finally, if planes other than commercial airlines are involved in the collisions, the problem of these collisions cannot be solved by a warning system that will not be installed on non-commercial airlines. 　

　　通过对于6分范文的分析，可以体会到GMAT出题人对于短题目的考察，偏重于题目细节，希望考生能够细致的对题目进行分析、较全面的指出错误点。尽管这道题的错误类型很单一，只是因果错误，但是，如果不能够深入到细节的话，并找到过半的错误点，分数很难得到大幅提高。

　　相应的GMAT官方指南上给出了4分的范文，这篇文章之所以分数较低，是因为只找到了我们之前陈述的第(5)点错误，全篇文章都是针对这一点错误展开，所以，分数相应较低。4分范文主体段落如下，供大家体会：

　　(5)signal course指示出路线，不等于两架飞机能够选择正确的避让路线 　

　　The main flaw in the argument is that it assumes that the two planes, upon receiving each other’s signals, will know which evasive action to take. For example, the two planes could be going towards each other and then receive the signals. If one turns at an angle to the left and the other turns at an angle to the right, the two planes will still crash. Even if they receive an updated signal, they will not have time to avoid each other.

　　综上，对于短题目的分析，考生一定要关注细节，而不是一味地寻找更多的错误类型。针对一种类型的错误，要尽可能考虑到题目中列出的多数“陷阱”，这样就可以更好地向高分冲刺了。

    更多信息请访问：新浪英语考试频道 英语考试论坛 英语考试博客圈

　　特别说明：由于各方面情况的不断调整与变化，新浪网所提供的所有考试信息仅供参考，敬请考生以权威部门公布的正式信息为准。