[解析]
(1)细节理解题。根据第一段Alibaba Cloud and the Hangzhou city government announced the launch of ET City Brain 2.0,a cloud﹣powered and Al﹣driven urban traffic﹣management system that aims to increase the city's efficiency.(阿里云和杭州市政府宣布推出ET City Brain 2.0,这是一个云驱动和al驱动的城市交通管理系统,旨在提高城市的效率。)可知,ET City Brain能够提高城市的效率,所以我们可以推出它可以减少交通拥堵,故选A。
(2)细节理解题。根据第五段As a result of City Brain's ability to predict traffic flow,detect accidents and provide instant feedback.(由于City Brain大脑能够预测交通流量、发现事故并提供即时反馈。)根据第六段In the case of medical emergencies,City Brain is able to change traffic lights.(在医疗紧急情况下,City Brain 大脑能够改变交通灯。)可知,A、B、C正确,D文中没有提到,故选D。
(3)词义猜测题。根据第三段such as water pressure,the number and position of fire hydrants (消防栓) in a given area,the location of gas pipes and other details they need to know.The information is instant,making the entire firefighting process faster,safer and more accurate.(如水压、给定区域内消防栓的数量和位置、燃气管道的位置以及他们需要知道的其他细节。信息是即时的,使整个消防过程更快、更安全、更准确."可知这个系统会使整个消防过程更快、更安全、更准确。)再结合划线词所在的句子"the system will optimize the city's firefighting abilities by providing key information to firefighters.(系统将通过向消防员提供关键信息来___城市的消防能力。)所以我们可以推测"optimize"的意思是"使…更好"。A.Practise练习;B.Better使…更好;C.Operate操作;D.Emphasize强调。故选B。
(4)推理判断题。根据最后一段It is more than just about traffic management.It's really about how to make a city more livable at a time of shrinking natural resources around the globe. "It is a matter of sustainability,while using as little natural resources as possible.(该系统旨在赋予城市快速直观的行动能力,它不仅涉及交通管理,还涉及如何在全球自然资源不断减少的情况下使城市更宜居。这是一个可持续性问题,同时尽可能少地使用自然资源。)可知,这个系统的目标是环保的发展,故选B。