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A.The city was to be designed together with a harbor.
B.The walls around the city would be made of steel and glass.
C.The building of the city would rest on a floating island.
D.The people would live in tall building surrounded by a wall.
44. How would fresh water be supplied to the city?
A.By treating sea water.
B.By getting it from the surrounding islands.
C.By building a small lake of fresh water inside the city.
D.By transporting it from the mainland.
45. The suggestion made by the organization is to solve the problem that _______.
A.there is not enough space for building cites on land
B.land transportation has became increasingly difficult
C.there are too many people on land
D.present cities are heavily polluted by cars
46. the purpose of the writer is-_______.
A.to suggest how new type of harbor could be built at sea
B.to give a description of a new--- type city.
C.to draw people’s attention to the problem of air pollution.
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