吉林省专科可以考研究生？有你不知道的报考条件吗？

Madrid was hailed as a public health beacon last November when it rolled out ambitious restrictions on the most polluting cars.Seven months and one election day later,a new conservative city council suspended enforcement of the clean air zone,a first step toward its possible demise.Mayor Jose Luis Martinez-Almeida made opposition to the zone a centrepiece of his election campaign,despite its success in improving air quality.A judge has now overruled the city's decision to stop levying fines,ordering them reinstated.But with legal battles ahead,the zone's future looks uncertain at best.Among other weaknesses,the measures cities must employ when left to tackle dirty air on their own are politically contentious,and therefore vulnerable.That s because they inevitably put the costs of cleaning the air on to individual drivers一who must pay fees or buy better vehicles一rather than on to the car manufacturers whose cheating is the real cause of our toxic pollution.It's not hard to imagine a similar reversal happening in London.The new ultra-low emission zone（Ulez）is likely to be a big issue in next year's mayoral election.And if Sadiq Khan wins and extends it to the North and South Circular roads in 2021 as he intends,it is sure to spark intense opposition from the far larger number of motorists who will then be affected.It's not that measures such as London's Ulez are useless.Far from it.Local officials are using the levers that are available to them to safeguard residents'health in the face of a serious threat.The zones do deliver some improvements to air quality,and the science tells us that means real health benefits-fewer heart attacks,strokes and premature births,less cancer,dementia and asthma.Fewer untimely deaths.But mayors and councillors can only do so much about a problem that is far bigger than any one city or town.They are acting because national governments一Britain s and others across Europe-have failed to do so.Restrictions that keep highly polluting cars out of certain areas-city centres,。school streets",even individual roads-are a response to the absence of a larger effort to properly enforce existing regulations and require auto companies to bring their vehicles into compliance.Wales has introduced special low speed limits to minimise pollution.We re doing everything but insist that manufacturers clean up their cars.
The author believes that the extension of London's Ulez will_____

A.arouse strong resistance.
B.ensure Khan's electoral success.
C.improve the city s traffic.
D.discourage car manufacturing.

陈先生在鼓励他孩子时说道：“不要害怕暂时的困难和挫折，不经历风雨怎么见彩虹”他孩子不服气地说：“您说的不对。我经历了那么多风雨，怎么就没见到彩虹呢”
陈先生孩子的回答最适宜用来反驳以下哪项？（ ）

A.如果想见到彩虹，就必须经历风雨
B.只要经历了风雨，就可以见到彩虹
C.只有经历风雨，才能见到彩虹
D.即使经历了风雨，也可能见不到彩虹
E.即使见到了彩虹，也不是因为经历了风雨

李大钊说过“老于旅途的人，走到平坦的地方，固是高高兴兴地向前走，走到崎岖的境界，愈是奇趣横生，觉得在此奇绝壮绝的境界，愈能感到一种冒险的美趣”，“在艰难的国运中营造国家，也是人生最有趣味的一件事”.这两句话说明（　　）
A.为理想献身，是人生的最高境界，是实现理想的主要条件
B.在追求理想的过程中，要进一步磨练自己的意志
C.在追求理想的过程中，要进一步坚定自己的信念
D.沒有实现理想的执着，要想实现宏伟的理想是不可能的

下列哪种情况下动脉血CO2分压降低

A.贫血
B. CO中毒
C.氰化物中毒
D.过度通气后