【分析解答题】

{{B}}Passage 1{{/B}} {{B}}Development of theCity{{/B}} Whatever the particular circumstances of a city, though, its vigour was likely to be affected by technological change. Just as it was improvements in farming that brought about the surpluses that made possible the first fixed settlements, so it was improvements in transport that made possible the development of trade on which the prosperity of so many cities dependeD、Other technological changes made it possible to survive in a city. The Romans, for instance, constructed aqueducts to bring fresh water to their towns and sewers to provide sanitation.But only the rich benefiteD、Most Romans, and many city-dwellers throughout history, lived in squalor, and many died of it. Towns were crowded and insanitary; people were often malnourished; and disease spread fast. Though cities grew in size and number for long periods, they could decline and fall, too.Between 1000 and 1300Europe’s urban population more than doubled, to about 70m (thanks partly to a new system of crop rotation, made possible by better tools). Then, with theBlackDeath, it fell by a quarter.Country people died too, but the city-dwellers were especially vulnerable. Their health depended above all on clean water and sanitation, which few had, and cheap soap and medicines, which had yet to be inventeD、 Not surprisingly, the next big change in the development of the city also turned on a leap in technology: the invention of engines and manufacturing machinery. The Industrial Revolution did nothing at first to make urban life easier, but it did provide jobs—lots of them. With the new factories of the industrial age that began in the late 18th century was born an entirely new urban er

A、Peasants left the land in their multitudes to live in new cities, first in the north ofEngland, then all overEurope and NorthAmeric
A、By 1900, 13% of the world’s population had become urban.