单选题 The traditional urbanization model has caused serious environmental problems due to its excessive _____ of fossil fuels.

单选题 The traditional urban life model mainly _____ around technological needs.

单选题 When an emergency occurs, the system can quickly _____ to the situation.

单选题 Smart cities make _____ use of interconnected information.

单选题 The traditional model of urbanization has led to a great deal of resource _____.

单选题 The concept of smart cities is gradually gaining more _____.

单选题 When a fire breaks out, inhabitants can be instantly _____ via smartphones.

单选题 The development of smart cities is likely to _____ the living standards of residents.