L17-2：The longest suspension bridge in the world
Two great towers support four huge cables. The towers are built on immense underwater platforms make of steel and concrete. The platforms extend to a depth of over 100 feet under the sea. These alone took sixteen months to build. Above the surface of the water, the towers rise to a height of nearly 700 feet. They support the cables from which the bridge has been suspended. Each of the four cables contains 26,108 lengths of wire. It has been estimated that if the bridge were packed with cars, it would still only be carrying a third of its total capacity. However, size and strength are not the only important things about this bridge. Despite its immensity, it is both simple and elegant, fulfilling its designer's dream to create 'an enormous object drawn as faintly as possible'.
任务配置：L0+L3+L4
知识笔记
词音:
estimated,capacity,concrete.
词义：
cable 缆绳；电缆；pack 塞满；包装。
练习感悟：
文章挺长的，而且难度也不低，练复述的时候一共三遍才记住。对于一些词组不太懂，对原文的理解一定要建立在完全读懂的基础上。
一句话，就是干。
