文章：According to many analysts, labor-management relations in the United States are undergoing a fundamental change: traditional adversarialism is giving way to a new cooperative relationship between the two sides and even to concessions from labor. These analysts say the twin shocks of nonunion competition in this country and low-cost, high-quality imports from abroad are forcing unions to look more favorably at a variety of management demands: the need for wage restraint and reduced benefits as well as the abolition of "rigid" work rules, seniority rights, and job classifications. Sophisticated proponents of these new developments cast their observations in a prolabor light. n return for their concessions, they point out, some unions have bargained for profit sharing, retraining rights, and job--security guarantees. Unions can also trade concessions for more say on the shop floor, where techniques such as quality circles and quality-of-work­ life programs promise workers greater control over their own jobs. Unions may even win a voice in investment and pricing strategy, plant location, and other major corporate policy decisions previously reserved to management. Opponents of these concessions from labor argue that such concessions do not save jobs, but either prolong the agony of dying plants or finance the plant relocations that employers had intended anyway. Companies make investment decisions to fit their strategic plans and their profit objectives, opponents point out, and labor costs are usually just a small factor in the equation. Moreover, unrestrained by either loyalty to their work force or political or legislative constraints on their mobility, the companies eventually cut and run, concessions or no concessions. Wage-related concessions have come under particular attack, since opponents believe that high union wages underlay much of the success of United States industry in this century. They point out that a long-standing principle, shared by both management and labor, has been that workers should earn wages that give them the income they need to buy what they make. Moreover, high wages have given workers the buying power to propel the economy forward. f proposals for pay cuts, two-tier wage systems, and subminimum wages for young workers continue to gain credence, opponents believe the U.S. social structure will move toward that of a less-developed nation: a small group of wealthy investors, a sizable but still minority bloc of elite professionals and highly skilled employees, and a huge mass of marginal workers and unskilled laborers. Further, they argue that if unions willingly engage in concession bargaining on the false grounds that labor costs are the source of a company's problems, unions will find themselves competing with Third World pay levels-a competition they cannot win. 想请问郭老师，这题opponents观点是在第三段，但是原文和选项要怎么对照呢...怎么从观点看出态度？

请数学老师讲解 什么叫整数角？没有小数点的不都是整数角吗？我已经忘了勾股定理了 这个题怎么确定？

请数学老师讲解思路，抛物线上的y轴交点为什么是3？一些基础知识我也忘了，请老师一起说下，谢谢。

请数学老师讲解下 这里面的思路我不太明白 第三次落地是不是就加到0.73二次方x 我每次都计算出800

请数学老师讲解 这个条件1我懂。条件2计算量好大。有什么快点的方法

请数学老师讲解思路，根号10我也只能估算出是3.a 感觉计算量好大 短时间完不成

请数学老师讲解下 谢谢

请数学老师解答下思路。为什么截距是2方程就是可以设为y=k(x-2)

请数学老师帮我讲下这类题的思路

还请金老师帮忙解答，谢谢，在讲现在分词的作用时，有两个句子：please answer the question using another way及look at the people lying on thethe beach.不是说现在分词不能做谓语，这两个句子的主谓结构能帮忙分析下吗，谢谢

王文静老师您好，这套题目我不太懂选项B红色字体部分为什么不对，然后released in 2009，这里面的released是动词还是形容词？bringing、winning的造句为什么不对？这道题的考点是哪个？非常感谢