2. 外语
  3. Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 18-23 on

Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 18-23 on

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问题 Complete the summary below.
Choose NO MORE THAN TWO WORDS from the passage for each answer.
Write your answers in boxes 18-23 on your answer sheet.
To understand why the Millennium Bridge swayed, engineers of Arup studied the videotape taken on the day of the opening ceremony. In the beginning they thought the forces of【R1】______might have caused the movement because there were many flags and banners on the bridge that day. But quickly new understandings arose after series of tests were conducted on how people walk on【R2】______ floors. The tests showed people would place their legs【R3】______to keep balance when the floor is shaking. Pat Dallard even believes pedestrians may unknowingly adjust their【R4】______to match the sway of the bridge. Professor Fujino Yozo’s study found that the vibration of a bridge could be caused by the【R5】______of people walking, running and jumping on it because the lateral rhythm of the sway could make pedestrians adjust their walk and reach the same step until it is impossible to stand【R6】______.
【R5】
选项
答案horizontal forces
解析 利用细节信息“Fujino Yozo”和“people walking，running and jumping”以及顺序性原则定位于原文第五段第一句话“…the horizontal forces caused by walking，running orjumping could also in turn cause excessive dynamic vibration in the lateral direction in thebridge”。很明显原文提及“walking，running or jumping”会导致“horizontal forces”，而这些“horizontal forces”又会反过来(in turn)导致桥梁的侧向振动(cause exces-sive dynamic vibration in the lateral direction in the bridge)，所以正确答案为horizontalforces。
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