填空题 A British psychologist verifies that 1 are not born with talents. Excellence comes mainly from 2 Favored by academics all over the world, the theory means a lot to teachers and parents. However, studies indicate that excellent people show few early signs of promise 3 parental encouragement. All of them devoted themselves to serious training. Those exceptionally talented required 4 of instruction and practice. Opponents believe practice and other factors are not enough to explain 5 .