3.Which of the following choices (A-D) is the best paraphrasing of the source sentence? The best paraphrasing must accurately preserve all key details without adding or omitting critical information.Source Sentence: “A new report today finds that layering the three vehicle technologies—autonomous, electric and shared-on top of one another could cut carbon emissions 80 percent by 2050 worldwide from a business-as-usual scenario.”A. The latest findings reveal that autonomous vehicles alone could reduce worldwide carbon emissions by 2050 without the need for electric or shared cars.B. A recent study shows that separating these three vehicle technologies could increase carbon emissions by 80% globally by 2050.C. Today’s report suggests that using only electric vehicles could decrease emissions by 2050, but not as much as combining all three technologies.D. Current research indicates that by combining self-driving, electric, and shared cars, global carbon emissions could be reduced by 80% by the year 2050 compared to current trends.

本题考查对句子的理解和同义转述能力。解题的关键在于准确把握原文句子中的关键信息，包括核心技术、结果以及对比情况，然后逐一分析各个选项是否准确保留了这些关键细节，是否存在添加或遗漏重要信息的情况。

1. 首先明确原文句子的关键信息：
   • 核心技术：三种车辆技术，即自主驾驶（autonomous）、电动（electric）和共享（shared）。
   • 结果：到2050年，将这三种技术叠加使用能使全球碳排放量相比常规情况减少80%。
   • 对比情况：与常规情况（business - as - usual scenario）相比。
2. 接着分析各个选项：
   • A选项：“The latest findings reveal that autonomous vehicles alone could reduce worldwide carbon emissions by 2050 without the need for electric or shared cars.” 该选项说仅自主驾驶车辆就能减少碳排放，不需要电动或共享汽车，这与原文中三种技术叠加使用的意思不符，遗漏了电动和共享技术这两个关键信息，所以A选项错误。
   • B选项：“A recent study shows that separating these three vehicle technologies could increase carbon emissions by 80% globally by 2050.” 此选项提到将三种技术分开使用会使碳排放量增加80%，而原文是三种技术叠加使用减少碳排放，不仅改变了技术使用方式，还将减少排放变成了增加排放，与原文关键信息严重不符，所以B选项错误。
   • C选项：“Today’s report suggests that using only electric vehicles could decrease emissions by 2050, but not as much as combining all three technologies.” 该选项只强调了仅使用电动汽车以及与三种技术结合的对比，没有提及自主驾驶和共享技术结合使用能减少80%碳排放以及与常规情况对比这两个关键信息，遗漏了重要内容，所以C选项错误。
   • D选项：“Current research indicates that by combining self - driving, electric, and shared cars, global carbon emissions could be reduced by 80% by the year 2050 compared to current trends.” 该选项准确地表达了将自主驾驶、电动和共享汽车结合使用，到2050年全球碳排放量相比当前趋势（可理解为常规情况）能减少80%，完整且准确地保留了原文的所有关键细节，没有添加或遗漏重要信息，所以D选项正确。