The idea of a smart city was brought up by US company IBM in 2010. Generally, a smart city is a city that uses digital technologies such as the Internet to improve city planning, save money and resources, and make our life convenient. How smart can a city be? Here are great examples that we can learn from.
In 2009, Dubuque became the first smart city in the US. The city used smart water meters to take the place of traditional water meters. They can detect(探测)water waste and leakage(泄漏)and send data to let the house owner know. The same system is used for other city resources like electricity and natural gas. This way, people know how they use their resources and are glad to help reduce waste.
Santander in Spain also gives us a look at the future. If people point a phone toward a nearby bus stop, the phone immediately shows all bus lines that serve the stop as well as their arrival times. The government organized a research team and provided an App(应用程序)that collects data on almost everything: light, temperature, and the movements of cars and people. Opening the App near a supermarket provides immediate information on special things.
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1.According to the passage, which of the following is RIGHT?
A.Digital technologies are used in smart cities. |
B.An English company first raised the idea of a smart city. |
C.A smart city is mainly made up of free Wi-Fi and phones. |
D.A smart city is still an idea and hasn’t come into being. |
A.useful | B.normal | C.suitable | D.easy |
A.cleaning water | B.supplying water |
C.saving water | D.producing water |
A.business | B.health care |
C.traffic controlling | D.public transportation |
A.Digital technologies help improve city planning. |
B.Smart cities will make our future life better and smarter. |
C.Smart cities are very common in both Dubuque and Santander. |
D.Spain and the US take the leading position in building smart cities. |
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同类型试题
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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