Supported by the Key Program of the National Natural Science Foundation of China under Grant No.60533110(国家自然科学基金重点项目);the National Natural Science Foundation of China under Grant No.60473075(国家自然科学基金);the National Grand Fundamental Research973Program of China under Grant No.2006CB303000(国家重点基础研究发展计划(973));the Key Program of the Natural Science Foundation of Heilongjiang Province of China under Grant No.ZJG03-05(黑龙江省自然科学基金重点项目);the Program for New Century Excellent Talents in University of China under Grant No.NCET-05-0333(新世纪优秀人才支持计划);the Heilongjiang Province Scientific and Technological Special Fund for Young Scholars of China under Grant No.QC06C033(黑龙江省青年科技专项资金)