Trắc nghiệm mới

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Read the passage and choose the best answer to each of the following questions. Urbanisation is a trend with no end. It is estimated that up to 66% of all people will live in cities by 2050. At the forefront of potential problems that this may cause are environmental, social and economic sustainability. The smart city is one solution. Wireless connectivity is changing the way we see and control traditional elements in our daily city lives. Streetlights with sensors are able to detect available parking spaces and alert drivers where they not only can park their cars but charge them as well. They can also turn themselves off, saving energy, and turn back on when it senses a car or person in close proximity. High-powered LEDs can alert commuters of traffic congestion and re-route them and, at the same time, provide severe weather warnings. Rubbish bins can send data to the waste management authorities, alerting them to pick up the bins when they are close to full, rather than the inefficient method of a weekly schedule, which may not be needed at all. However, smart cities also come with their drawbacks. One argument against the implementation of smart cities is that it will cause people to become even more reliant on technology and oblivious to their surroundings. It’s quite common these days to have a person walking down the street, staring into their smart phone, unaware of their surroundings. These people cross the street at a red light, bump into strangers or even fall off a ledge marked as off-limits.  3. What can streetlights with sensors do? → ____________________________________________________
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