第17题: [单项选择]By saying "insomnia is caused by life" (Para. 3), the author means that ______. A. any human being may be down with insomnia B. any style of life can lead to insomnia C. any fragment of life can cause insomnia D. any day of life can result in insomnia 参考答案:C 答案解析:本题为细节理解题。据第3段我们知道,各种因素,包括吃的、喝的、做的、见到的、听到的等都会引起失眠,故C。B太具体,而A和D为曲解。