摘要
请先阅读下面这篇短文,注意斜体句子的结构。(1)TodayitisAmericansciencethatleadstheworld,butwehavenoassurancethatthisstateofaffairswillcontinue.TheUnitedStatesisrunningshortofpeopletrainedinscience,whilethenumberofourscientistshasmultipliedmanytimesover,andthedemandforscientificskillshasbeenincreasingevenfaster.
出版日期
2009年06月16日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)