【正】A teenager lost a contact lens while playing basketball in his driveway.After a fruitless search,he told his mother the lens was nowhere to be found.Undaunted,she went outside and in a few minutes,returned with the lens in her hand."How did you manage to find it,Mom?"the teenager asked."We weren’t looking for the same thing,"she replied."You were looking for a small piece of plastic.I was looking for$150."