2. 外语
  3. THE ESCALATOR An American, Charles D. Seeberger, invented moving stairs to transport people in the 1890s. He (26)______ th

THE ESCALATOR An American, Charles D. Seeberger, invented moving stairs to transport people in the 1890s. He (26)______ th

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问题                               THE ESCALATOR
   An American, Charles D. Seeberger, invented moving stairs to transport people in the 1890s. He   (26)______  this invention an ’escalator’,   (27)______   the name from the Latin word ’scala’,   (28)   means ’ladder’. Escalators move people up and down short  (29)______  Lifts de the same, but only move   (30)______  small number of people. If an escalator breaks down, it can still be   (31)______   as ordinary stairs. An escalator can move   (32)______   8,000 and 9,600 people an hour, and it   (33)______    not need a person to operate it.
   Towards the end of the nineteenth century, cities were   (34)______   more crowded and the first escalators were built at railway stations and in big department   (35)______   so that people could move about more quickly. Today we see escalators everywhere.
选项 A、what
B、whose
C、who
D、which
答案D
解析 本空是非限定性定语从句，由which…引导，因此D是正确答案。
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