Câu hỏi:

     The United Arab Emirates (UAE) is a country with a lot of oil. Oil brings the country billions of dollars each year. Why is the UAE building a city that uses very little or no oil? The answer is simple: oil will not last forever. (1) _______

     In fact, engineers are now building a new city (2) _______ The city is called Masdar. If it is a success, Masdar will be the first city in the world that uses little or no oil. It will hold 50,000 people, more than 1,000 companies, and a university. Its streets are very narrow. The houses are close to each other. The shade from the houses (3) _______

     There are no cars on the streets of Masdar. (4) _______ people can walk to most places. If they get tired, they can use the PRT: Personal Rapid Transit. These small, solar-powered cars move underground, like a subway. The cars have no drivers. People just tell the car (5) _______ , and it takes them there.

     Masdar will reuse as many resources as possible. It will reuse about 80 percent of its water and change most of its waste into more energy. People in Masdar are even using building materials that they can reuse in the future.

     Can this city really (6) _______ ? No one knows. But if it is, there could be other low-energy cities around the world in the future.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 78 to 83.