问题
问答题
People now sleep about 20% less than they did a century ago. One 2010 poll of 1000 Americans found 36% are drowsy or fall asleep when they are driving, and 29% become very sleepy at work.
答案
参考答案：现在人们的睡眠时间相比一个世纪以前减少了20%。 2010的一份有1000位美国人参与的民意调查显示，36%的美国人在开车时都昏昏欲睡或者睡着，29%的人在工作时非常困乏。