2. 外语
  3. Skyscrapers Skyscrapers were invented in the United States. / As early as the 1880s, two new technical developments made the

Skyscrapers Skyscrapers were invented in the United States. / As early as the 1880s, two new technical developments made the

admin2017-05-09  40
问题  
选项
答案 Skyscrapers Skyscrapers were invented in the United States. / As early as the 1880s, two new technical developments made these taller buildings possible. / One development was the mechanical elevator. / It meant that people would not have to climb many steps to reach the upper floors of tall buildings. / The development of steel building technology also helped make taller buildings possible. / Many experts consider the Home Insurance Building in Chicago to be the first skyscraper. / This tower was about 55 meters tall. / Today this would not be considered much of a skyscraper. / But at the time, this height was striking. / The structure was built using a steel frame. /
解析
转载请注明原文地址:https://kaotiyun.com/show/07JK777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)