In any field it's important to have ambition and drive. But having worked as a psychologist with athletes, executives, artists and young people, I've learned that those who rise to the headiest heights in any field aren't necessarily the ones with the greatest natural talent. They're the diligent few who put in the hours. They work hard. And then they work harder. Recent research by fellow psychologists bears out the significance of focused hard work. In 1988, K. Anders Ericsson of Florida State University in Tallahassee and colleagues in Germany compared the careers of two groups of young musicians. The ten members of the first group were identified as potential topflight international performers. Another ten were identified as merely "good". Ericsson also included ten violinists performing in orchestras of international reputation, such as the Berlin Philharmonic. Both student groups kept diaries of their current practice schedules, and all three groups provided estimates of their earlier schedules. Of the student musicians, Ericsson found, by the age of 20, the "good" group had practiced 7500 hours - an impressive total. But the potential world-class performers had practiced a staggering 10 000 hours - the equivalent of more than a year of hard work. "It's the difference between a college freshman and a junior," Ericsson says. Moreover, the top group's total practice time matched almost exactly that of the symphony performers at the same age. Of course, there's a difference between hard work and drudgery. Keeping your nose mindlessly to the grindstone will only get you abraded nostrils. It's important to put in the hours. But it's not just the hours that count. For hard work to really pay off, you need to work effectively. 1. According to the author, the most important quality for one desiring the greatest achievements is ________.
A、ambition
B、hard work
C、drive
D、the greatest natural talent