Passage Four
Which of the following is NOT a reason that many motorway accidents are categorized under headings other than sleepiness
A．The Transport and Road Research Laboratory finds the cause as "perceptual errors".
B．Drivers are unwilling to admit to "falling asleep" for fear of being dismissed.
C．Few investigators inquire further to discover the actual reasons hidden behind.
D．Insurance companies are reluctant to pay insurance for drivers’ sleepiness.
参考答案：A
解析：
[分析]： 因果关系的找寻和判断。 原文认为许多道路事故原因虽因睡眠引起，但却名目繁多，如精神不集中等。交通与道路研究实验室将20％的道路事故归为“感知错误”，鲜有调查者进一步研究司机精神不集中的原因。出于各种原因，如怕被追究责任、丢饭碗或在保险赔偿时遇到麻烦，司机们不愿承认开车时睡着了，而更愿承认出事是因为精神不集中。由此可见B、C、D三项均与原文相符，只有A的内容与原文不符，因此该项为正确答案。[解题关键] 根据上下文关系，找出句间逻辑关系，也可凭借某些表原因的短语，确定前后句的因果关系。本题中原文中For various reasons，表明了前后句的因果关系。
