31.   What makes North Carolina gridlock different, they say, is the easygoing culture of the state, which has drawn so many people and jobs here.

32.   What makes Pettitte so effective against right-handers, Valentine said, is his cut fastball that comes into them.

33.   What makes the Beavers unique, says Field, is their ability to run and pass from it.

34.   What makes the colors so rich and saturated, she said, is the layering technique.

35.   What makes them easy for novices, she said, is their extra gait, called the tolt, a running walk that does not require posting.

36.   What makes this study interesting, said the lead author, Dr. Aaron R. Folsom, is that it started with healthy individuals.

37.   What will make his school unique, Strickman said, is not only its diversity, but its strong emphasis on international law.

38.   What made his prize-winner different, he says, is that every chapter is a mix of biography, social history and literary analysis.

39.   What made the patent unusual, experts said, was that it was not an invention in the traditional sense.

40.   What made this smuggling operation stand out, immigration officials said, was the vast number of employers who had tapped into it in search of workers.