听力题 Turning to the local scene, the strike by the city bus drivers has just gone into its third day. And those negotiations are continuing between the city officials and representatives of the bus drivers'' union. No settlement is in sight. The drivers say that salaries are not the main issue in the dispute, that working conditions and employee pension plans will have to be improved before they return to their jobs. In the meantime, city residents are coping as best they can with the city transportation tie-up. Many people are reported to be sharing cars to and from work. And many others have rediscovered the pleasures of walking. Floyd Brewster, whom we spoke to as he was walking his 20 blocks to his office earlier this morning, told us that he did not think he would go back riding the buses after the strike is over," It''s healthier," he said, " I''m getting the type of exercise I''ve never gotten before, and I feel wonderful. "