M: Researchers in America did some experiments to try to figure out why some people gain weight more than others do. ,F: Yeah, some people can eat whatever they want and they never seem to gain a pound. ,M: In this study, volunteers were given 1000 extra calories a day. About 2 pieces of cheese's worth of extra intake. ,F: This kind of study I'd like to be in.
(A) M: You prefer excise and you don't want to take 1200 extra calories so you don't like this experiment. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Because you want to lose weight and you don't want the extra 1200 calories but you still want to join the experiment. (D) M: Because you enjoy the food.
D