[单选题]工程建设项目的环境影响评价文件实行（ ）。
A.报批制
B.核准制
C.备案制
D.审批制

阅读下面的短文。回答26～30题
思想一旦离开利益，就会使自己出丑。思想解放更大的阻力，显然来自既得利益。无可否认，过去三十年的改革进程，是一个利益结构越来越不均匀的过程。强势群体拿走了过多的利益，有一些是合理回报，有一些却未必合理，不过是利用制度缺陷、借助自己的特殊地位获致，还有一些甚至是罪恶得利。新一轮的改革开放同时也是利益格局大调整，这势必大大压缩既得利益的空间。某些改革先行者，后来成了既得利益者，进而成了思想解放的阻力。为什么思想解放容易口号化、标签化，难于落实，难于把自己摆进去根本的原因就在这里。
人都是趋利避害的。某些既得利益者对思想解放的抵触，应属人之常情。但一个国家的未来，一个民族的命运，不应为个别人的既得利益所累。何况，凡是不公平的都无法长久，本来就是历史的铁律。所以普遍自由和普遍平等，越来越成为人类共有的梦想；分享的意识、人均的意识，越来越成为社会舆论的最大公约数；对公平正义的追求如钱塘之潮沛然东来，其势不能御。
人不可与潮流为敌。对既得利益的固守，或能持续一时，却不可能持续一世。不该属于自己的终究会守不住。区别只在于是体面地主动让渡，还是不体面地被动失去。这就需要既得利益者有精神内省，有良知。人是要有一点信仰的，得有责任感、使命感。且不说超凡脱俗，至少可以活得更高雅一点，更有尊严一点。这就需要超越的眼光，需要站在历史的高度，尊重社会的普遍感受，尊重社会的普遍需求，重建利益相对均衡的新秩序。大家好你才能好，让每个人都能分享发展的红利，才可能国泰民安，你才可能是安全的。否则，在一个断裂和倾斜的社会中，纵然坐拥金山，坐拥无上权力，终究也不过是流沙上的建筑。

Earth’s North and South Poles are famous for being cold and icy. Last year, however, the amount of ice in the Arctic Ocean fell to a record low.
Normally, ice builds in Arctic waters around the North Pole each winter and shrinks during the summer. But for many years, the amount of ice left by the end of summer has been declining.
Since 1979, each decade has seen an 11.4 percent drop in end of summer ice cover. Between 1981 and 2000, ice in the Arctic lost 22 percent of its thickness, becoming 1.13 meters thinner.
Last summer, Arctic sea ice reached its skimpiest levels yet. By the end of summer 2007, the ice had shrunk to cover just 4.2 million square kilometers. That’s 38 percent less area than the average cover at that time of year. And it’s a very large 23 percent below the previous record low, which was set just 2 years ago. This continuing trend has scientists concern
A. What are scientists looking for in the Arctic Ocean
B. What are scientists doing in the Arctic Ocean
C. Why are scientists worrying about the Arctic Ocean
D. Why are scientists interested in the Arctic Ocean