【正】 United States President George W. Bush arrived in Beijing on Feb. 21 for a two-day working visit to China as guest of Chinese President Jiang Zemin.The two leaders of state agreed to take active efforts to develop exchanges and cooperation in the areas of economy and trade, energy, science and technology, environmental protection, AIDS prevention and treatment and iaw enforcement. The Sino-US joint meetings on economy, commerce and trade, and science and technology will be held this year.The two sides also agreed to establish a joint working group for the issues of environmental protection and climate changes