资料：Earlier this month, presidents Barack Obama of the US and Xi Jinping of China made an important symbolic gesture when they committed their countries, the two largest greenhouse gas emitters, to the Paris climate agreement. It was the clearest signal yet to investors worldwide that they need to think about the implications of global warming for their portfolios.
On Friday afternoon there was an example of what that might mean Mr Obama’s administration issued an order temporarily blocking construction on a section of the Dakota Access oil pipeline. The move was a response to local concerns raised by the Standing Rock Sioux Tribe about potential damage to historic sites and the threats of oil spills. But it is the global issue of climate change that had raised the profile of Dakota Access, making it into a cause celebre for US environmental campaigners. Bill McKibben of 350.org, which played a key role in the successful effort to stop the Keystone XL pipeline from Canada, has suggested that Mr Obama could block Dakota Access permanently, on the grounds that it would exacerbate the threat of climate change.
Last month, the White House’s Council on Environmental Quality issued new guidance for federal agencies, making clear that their decisions should take into account “the potential effects of a proposed action on climate change”, and quantify their consequences for greenhouse gas emissions. Dakota Access is intended to carry crude oil 1,172 miles from North Dakota, a centre of the US shale revolution, to Illinois, en route to refineries around America. The case that it would add to global greenhouse gas emission will be harder to make than for Keystone XL, which would have brought crude from the high-emitting oil sands of western Canada, but the campaigners are certain to try.
If Dakota Access is stopped, it will have a significant impact not just on energy Transfer Partners, the company leading the project, but on all North Dakota oil producers and their customers, who will be forced to use more expensive rail transport.
Climate change is now an unavoidable business issue. In an excellent paper last week, BlackRock, the world’s largest fund manager, set out some of the ways that investors can reduce their exposure to the risks and benefit from the opportunities that it creates. The paper is a landmark in the rising awareness of the issue among mainstream investors. It is one thing when a philanthropic fund with assets of a few hundred million takes a stand on climate issues, quite another when the warnings come from a company with about $4.9tn under management. As BlackRock points out, investors’ personal views on climate science are irrelevant. Enough governments and businesses are convinced by the scientific consensus that the threat is real, and are driving regulatory and technological changes that interested in you.
六If the world is to reduce the risk of catastrophic global warming to acceptable levels, there will have to be a huge reallocation of capital away from fossil fuels and toward low-emission energy sources. That shift has begun, but it needs to go much further. The transition is not straightforward: for as long as oil is the lifeblood of the world’s transport, pipelines will be needed. But when investors and boards make decisions about projects like Dakota Access, they will have to consider their impact on greenhouse gas emissions. The financial consequences of climate change can no longer be ignored.
The best title to the article should be ( ).
本题考查的是主旨大意。
【关键词】best title
【主题句】第一段 It was the clearest signal yet to investors worldwide that they need to think about the implications of global warming for their portfolios.（这是迄今为止向全球投资者发出的最清晰的信号，他们需要考虑全球变暖对其投资组合的影响。）
最后一段The financial consequences of climate change can no longer be ignored.（气候变化对金融的影响不能再被忽视。）
【解析】本题问“本文的最佳标题是（ ）？”。选项A意为“气候变化的灾难性后果”；选项B意为“美国在控制温室气体排放方面的努力”；选项C意为“气候变化中的投资威胁”；选项D意为“世界处于危险之中”。根据主题句可知全篇文章就是在论述气候变化中的投资风险。
下列关于公司的表述，正确的是（）
以下各项列举了我国常见气象灾害与其发生地区的对应关系，其中正确的一项是（）
根据电视收视率调査，看体育节目的观众中青年人比中老年人要多。
由此可推断出（）
—种海洋蜗牛产生的毒素含有多种蛋白，把其中的一种给老鼠注射后，会使有两星期大或更小的老鼠陷入睡眠状态，而使大一点的老鼠躲藏起来。当老鼠受到突然的严重威胁时，非常小的那些老鼠的反应是呆住，而较大的那些老鼠会逃跑。
以上陈述的事实最有力地支持了以下哪项假说？（）
疾病控制中心对某校髙中三个年级的学生进行抽样做视力状况调查，抽样的方法为分层抽样（按比例抽样），若高中一、二、三年级学生人数分别为626、703、780，样本容量为84，则应从离二年级抽样的学生人数为多少？（）
