第7题: [单项选择]People should stay away from caffeine after lunch because A. its effect may linger for almost 10 hours. B. it disturbs the way people feel in daytime. C. it accelerates heartbeat and respiration. D. they may want to take a catnap. 参考答案:A 答案解析:[解析] Dr.Getsy提到,咖啡因的作用可持续长达十小时,因此如果咖啡因影响到睡眠质量,就应在午饭后远离咖啡因,故A为正确答案。 [点睛] 事实细节题。对话中未提及咖啡因会扰乱人们白天的