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The persistent haze over many of our cities is a reminder of the polluted air that we breathe. Over 80% of the world’s urban pop
The persistent haze over many of our cities is a reminder of the polluted air that we breathe. Over 80% of the world’s urban pop
admin
2021-01-08
28
问题
The persistent haze over many of our cities is a reminder of the polluted air that we breathe. Over 80% of the world’s urban population is breathing air that fails to meet World Health Organisation guidelines, and an estimated 4.5 million people died【C1】______from outdoor air pollution in 2015.
Globally, urban populations are expected to double in the next 40 years, and an extra 2 billion people will need new places to live, as well as services and ways to move around their cities. What is more important, the decisions that we make now about the design of our cities will【C2】______the everyday lives and health of the coming generations. So what would a smog-free, or at least low-pollution, city be like?
Traffic has become【C3】______with air pollution, and many countries intend to ban the sale of new petrol and diesel cars in the next two decades. But simply【C4】______to electric cars will not mean pollution-free cities. The level of emissions they cause will depend on how the electricity to run them is【C5】______, while brakes, tyres and roads all create tiny airborne【C6】______as they wear out.
Across the developed world, car use is in decline as more people move to city centres, while young people especially are【C7】______for other means of travel. Researchers are already asking if motor vehicle use has reached its【C8】______and will decline, but transport planners have yet to catch up with this【C9】______, instead of laying new roads to tackle traffic jams. As users of London’s orbital M25 motorway will know, new roads rapidly fill with more traffic. In the US, studies have shown that doubling the size of a road can【C10】______double the traffic, taking us back to the starting point.
A) alternate F) merged K) prematurely
B) crown G) miniatures L) simply
C) determine H) opting M) switching
D) generated I) particles N) synonymous
E) locating J) peak O) trend
【C8】
选项
答案
J
解析
[语法判断]空格位于if引导的从句中,该从句的主语是motor vehicle use,谓语是has reached,宾语是its______,后面为and连接的并列谓语will decline,因此空格处需要填入名词作reached的宾语。[语义判断]本句提到机动车辆的使用情况:一方面是机动车辆的使用已达到某种水平,另一方面是机动车辆的使用将开始下降。因此,空格处需要填入一个表示“某种水平”的名词。备选名词中只有J)peak"高峰,顶点"符合要求,故为答案。
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大学英语六级
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