| 想起来几个 有一种迁徙的鸟吃海龟蛋。最近海龟蛋数量下降。但是argue鸟不会受影响，因为只要鸟儿呆的时间长，就可以迟到足够的蛋。问题是：怎么削弱这种说法。 我选的是：鸟早吃完早迁徙，晚吃完就不会再繁殖了。 数学有一个是红色的和三角的ds，版上另一个哥们儿说得很详细了。 阅读有一个是黑人人权的，说白人和黑人两种工会。白人歧视黑人。结果黑人帮助所有的工人获得了利益，所以白人也改变了观点（这个地方记得清楚，因为有一个题是考白人的观点的）。 找到原文了 In the 1930’s and 1940’s,
African American industrial workers in the southern United States, who constituted 80 percent of the unskilled factory labor force there, strongly supported unionization. While the American Federation of Labor (AFL) either excluded African Americans or maintained racially segregated unions, the Congress of Industrial Organizations (CIO) organized integrated unions nationwide on the basis of a stated policy of equal rights for all, and African American unionists provided the CIO’s backbone. Yet it can be argued that through contracts negotiated and enforced by White union members, unions—CIO unions not excluded—were often instrumental in maintaining the occupational segregation and other forms of racial discrimination that kept African Americans socially and economically oppressed during this period. However, recognizing employers’ power over workers as a central factor in African Americans’ economic marginal ization, African American workers saw the need to join with White workers in seeking change despite White unionists’ toleration of or support for racial discrimination. The persistent efforts of African American unionists eventually paid off: many became highly effective organizers, gaining the respect of even racist White unionists by winning victories for White as well as African American workers. African American unionists thus succeeded in strengthening the unions while using them as instruments of African Americans’ economic empowerment. 其它的我再想想。 | 
