正确答案: A

outweighs that held by the states.

题目：The White House claims that its power of enforcement

解析：考点分析：此题考查考生对文章细节信息的把握能力选项分析：根据题干中的关键词the White House, 定位在第六段。最后一句提到白宫声称它能够使任何它不同意的州法律不合法，也就是选项A。

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学习资料的答案和解析：

[单选题]正确答案是_______.

[单选题]请在第____处填上正确选项。

根据以下资料，回答下面的题目。The social sciences are flourishing.As of 2005,there were almost half a million professional social scientists from all fields in the world, working both inside and outside academia. According to the World Social Science Report 2010,the number of social-science students worldwide has swollen by about 11% every year since 2000.Yet this enormous resource in not contributing enough to today’s global challenges including climate change, security,sustainable development and health.(41)______Humanity has the necessary agro-technological tools to eradicate hunger , from genetically engineered crops to arificial fertilizers . Here , too, the problems are social: the organization and distribution of food, wealth and prosperity.(42)____This is a shame—the community should be grasping the opportunity to raise its influence in the real world. To paraphrase the great social scientist Joseph Schumpeter:there is no radical innovation without creative destruction .Today ,the social sciences are largely focused on disciplinary problems and internal scholarly debates,rather than on topics with external impact.Analyses reveal that the number of papers including the keywords “environmental changed” or “climate change” have increased rapidly since 2004,(43)____ When social scientists do tackle practical issues ,their scope is often local:Belgium is interested mainly in the effects of poverty on Belgium for example .And whether the community’s work contributes much to an overall accumulation of knowledge is doubtful. The problem is not necessarily the amount of available funding (44)____this is an adequate amount so long as it is aimed in the right direction. Social scientists who complain about a lack of funding should not expect more in today’s economic climate.The trick is to direct these funds better.The European Union Framework funding programs have long had a category specifically targeted at social scientists.This year,it was proposed that system be changed:Horizon 2020,a new program to be enacted in 2014,would not have such a category ,This has resulted in protests from social scientists.But the intention is not to neglect social science ; rather ,the complete opposite.(45)____That should createmore collaborative endeavors and help to develop projects aimed directly at solving global problems. 请在第____处填上正确选项。[A] It could be that we are evolving two communities of social scientists:one that is discipline-oriented and publishing in highly specialized journals,and one that is problem-oriented and publishing elsewhere,such as policy briefs.[B] However,the numbers are still small:in 2010,about 1,600 of the100,000 social-sciences papers published globally included one of theseKeywords.[C] the idea is to force social to integrate their work with other categories, including health and demographic change food security, marine research and the bio

解析：[考点分析] 复现结构定位 [选项分析] 此题为段尾空，其内容由上句确定。上一句句子主要意思是包括关键词environmental changed 和 climate change 的论文的数量迅速增长.，根据段落内容一致性原则，下面应该继续讲此类论文的数量问题。只有选项B 中继续说，“然而，这些数量还是很小的”，从内容上来说衔接十分紧密，因此B 为正确答案。