参考答案：D

解析：

[分析]： 事实细节的找寻和判断。 原文提问与题干问题相同，原文提问后，讲话者以例作答，其中If an accident involves only one vehicle... 与B项内容相符；This pattern of injury，combined with an absence of skid marks on the road... 与C项内容相符；... especially if it occurs where traffic is light and vehicles are consequently well-spaced on the road 与A项内容相符，由此可见，该题的正确答案为D。[解题关键] 掌握表示举例的信号词。如本题原文使用There are some strong pointers 来提示听者注意下面是举例的内容，即该题的答案所在。