Developments that Allowed Ancient Roman Cities to Expand


听力材料 精听听写练习

查看听力原文 查看听力原文

    <-NARRATOR:-> Listen to part of a lecture in a history class.
    <-FEMALE PROFESSOR:-> So, most cities of the ancient world tended to be small,
    often limited to the banks of a river.
    They had very little means to expand...
    these old cities couldn't really cross natural barriers, like rivers,
    or be located very far from water sources.
    But Roman cities, on the other hand, grew much larger.
    How did this happen?
    Well, for one thing, the Romans had more advanced technology.
    Let's look at a couple of Roman developments that allowed their cities to expand.
    One development that allowed Roman cities to grow was their advanced building materials.
    The Romans developed a special kind of concrete-
    a building material-that would harden under water,
    and this concrete made new kinds of structures possible.
    Take their bridges, for example.
    Because of this special concrete, they could build better bridges-
    bridges that could go across wide rivers...
    bridges that were big enough to transport equipment and materials, with wagons and carts.
    So with these strong bridges, Roman cities could grow on both sides of the river,
    creating larger cities than would have been possible otherwise.
    Another development that helped Roman cities expand was an improved way to move fresh, clean water.
    People need access to fresh water,
    and the Romans created an especially effective way to bring it to them-
    they built structures called aqueducts.
    Now, aqueducts are a series of open channels, waterways that stretch from water sources high in the mountains to cities.
    They were carefully planned and built so that a steady drop in altitude provided a steady flow of water to cities.
    These aqueducts could move a tremendous amount of water over great distances,
    and even bring fresh water to places far from rivers.
    Because of this, people could have clean water for drinking and bathing, without being located near a river,
    so cities were able to grow larger,
    in new locations.


Using the examples from the lecture, explain two developments that allowed ancient Roman cities to expand.


我的笔记 编辑笔记

  • 优秀录音
  • 网友思路
  • 名师思路
  • 分数最高
  • 会员福利内容准备中,丰富答题思路即将上线