仔细阅读(共10小题,20分)-|||-The reason we have eight-hour work days at all was-|||-because companies found that cutting employees'-|||-hours had the reverse effect they expected: It upped-|||-their productivity.During the Industrial Revolution,-|||--t0-16-hour days were normal.Ford was the first-|||-company to experiment with an eight-hour day-and-|||-found its workers were more productive not only per-|||-hour, but overall.Within two years, their profit-|||-margins doubled.-|||-One survey of almost 2,000 full-time office workers in-|||-the UK found that people were only productive for-|||-two hours out of an eight-hour day.We can focus for-|||-an even shorter period of time when we re pushing-|||-ourselves to the edge of our capabilities. Resea rchers-|||-like Anders Ericsson have found that when engaging-|||-in the kind of deliberate practice necessary to truly-|||-master any skill,we need more breaks than we think.-|||-Most people can only handle an hour without taking a-|||-rest.And many elites,like elite musicians,authors and-|||-athletes, never dedicate more than five hours a day-|||-consistentlyto their cra-|||--|||-7.What have researchers found about deliberate-|||-practice to master skills?-|||-A Long-term continuous prac-|||-B More breaks will be needed.-|||-C Intensive training is necessary.-|||-D One hour is the minimum practice duration.