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2015年GMAT句子改错练习题及详细解析汇总
49. The automotive conveyor-belt system, which Henry Ford modeled after an assembly-line technique introduced by Ransom Olds, reduced from a day and a half to 93 minutes the required time of assembling a Model T.
(A) from a day and a half to 93 minutes the required time of assembling a Model T
(B) the time being required to assemble a Model T, from a day and a half down to 93 minutes
(C) the time being required to assemble a Model T, a day and a half to 93 minutes
(D) the time required to assemble a Model T from a day and a half to 93 minutes
(E) from a day and a half to 93 minutes, the time required for the assembling of a Model T
答案解析如下：
(A)from a day and a half to 93 minutes the required time of assembling a Model T
【错误】 简洁明了：在GMAT语法题中表达同一个意思时，简洁性从高到低依次为动词、形容词和副词、一般名词、动名词(简称VANing原则：V——verb，A——adj.或adv.，N——noun，ing——动名词)，所以“the required time of assembling”相比 (D)中“time required to assemble”较不简洁。
(B)the time being required to assemble a Model T, from a day and a half down to 93 minutes
【错误】 简洁明了：“time being required”中的“being”完全是多余的。
(C)the time being required to assemble a Model T, a day and a half to 93 minutes
【错误】 简洁明了：类似地，见(B)。
(D)the time required to assemble a Model T from a day and a half to 93 minutes
【正确】 “required to assemble”的简洁性优于其他使用“being required”和“assembling”的选项。
【大意】 自动传送带系统，一种Henry Ford对Ransom Olds引入的流水线技术的模仿，将组装T型车需要的时间从一天半较少到93分钟。
(E)from a day and a half to 93 minutes, the time required for the assembling of a Model T
【错误】 简洁明了：类似地，见(A)。
【最优解题思路推荐】
本题是少有的简洁性解题原则极为有效的例题。(D)没有任何错误，而(A)、(B)、(C)、(E)各存在不简洁的地方，因此选择(D)。
[P680]
50. According to some analysts, the gains in the stock market reflect growing confidence that the economy will avoid the recession that many had feared earlier in the year and instead come in for a "soft landing," followed by a gradual increase in business activity.
(A)that the economy will avoid the recession that many had feared earlier in the year and instead come
【正确】 “that ”引导的从句作同位语正确地修饰了“confidence”，叙述了“信息”的具体内容，过去完成时的“had feared”与“earlier in the year(今年更早些时候)”语义搭配合理。
【大意】 根据一些分析师的说法，股票市场的利得反映了正在增长的信心：经济将避免早些时候人们担忧的衰退并达到一个由商业活动逐渐增加跟随着的“软着陆”。
(B)in the economy to avoid the recession, what many feared earlier in the year, rather to come
【错误1】 平行结构：有日常逻辑可知，“to avoid the recession”和“to come”本意上应是平行的，但两个平行的对象不能仅仅用“rather”一个词连接。
【错误2】 固定搭配：不存在“confidence in X to do sth.”表达“对X做某事有信心”的用法。
(C)in the economy\'s ability to avoid the recession, something earlier in the year many had feared, and instead to come
【错误】 平行结构：有日常逻辑可知，“to avoid the recession”和“to come”本意上应是平行的，但两个平行的对象不能仅仅用“rather”一个词连接。
(D)in the economy to avoid the recession many were fearing earlier in the year, and rather to come
【错误1】 动词时态：“many were fearing”逊于过去完成时的“had feared”，因为“had feared”和“earlier in the year”更加搭配——今年更早些时候，属于“过去的过去”。
【错误2】 固定搭配：见(B)中【错误2】。
(E)that the economy will avoid the recession that was feared earlier this year by many, with it instead coming
【错误1】 动词时态：类似地，见(D)中【错误1】。
【错误2】 简洁明了：在GMAT考察的标准书面英语中，主动句简洁性优于被动句，因此“that was feared”简洁性逊于(A)中“that many had feared”。
【最优解题思路推荐】
(C)中两个本应平行的“to do”结构没有“and”连接，排除，不存在“confidence in X to do sth.”表达“对X做某事有信心”的用法，排除(B)、(D)。
(A)比(B)相对简洁，因此选择(A)。
[P680]
51. A new study suggests that the conversational pac