In fact, Walberg says, students with high I.Q.s sometimes don't do as well as classmates with lower I.Q.s. For them, learning comes too easily and they never find out how to get down.

   Hard work isn't the whole story, either. "It's not how long you sit there with the books open," said one of the many A students we interviewed. "It's what you do while you're sitting." Indeed, some of these students actually put in fewer hours of homework time than their lower-scoring classmates.
   The kids at the top of the class get there by mastering a few basic techniques that others can readily learn.

1.           The “nerds” can probably be __________.

A.                       dull bookworms lacking sports and social skills

B.                        successful top students popular with their peers

C.                        students with certain learning difficulties

D.                       born leaders crazy about social activities