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】______.
【R1】
选项
答案wind/winds
解析 利用细节信息“flags and banners on the bridge”定位于原文第三段第四句话“Becausethere was a significant wind blowing on the opening days(force 3-4)and the bridge hadbeen decorated with large flags，the engiseers first thought that winds might be exertingexcessive force on the many large flags and banners…”。原文这里提及工程师们最初认为是风对旗帜和横幅施加了过大的力(exerting excessive force)才导致桥梁晃动，对应题目中的“caused the movement”，所以正确答案为wind或winds。
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