1.During the years after the terrorist attack on the World Trade Center,structural engineers have been trying hard to solve a question that would otherwise have been completely unthinkable:Can building be designed to stand catastrophic blasts (攻击) by terrorists?
Soon after the terrorist attacks on the twin towers,structural engineers from the University at Buffalo and the Multidisciplinary Center for Earthquake Engineering Research (MCEER) traveled to ground zero as part of a project funded by the National Science Foundation.They spent two days beginning the task of formulating (构思) ideas about how to design such structures and to search for clues on how to do so in buildings that were damaged,but still are standing.
"Our objective in visiting ground zero was to go and look at the buildings surrounding the World Trade Center,those buildings that are still standing,but that sustained damage,"said M.Bruneau,Ph.D."Our immediate hope is that we can develop a better understanding as to why those buildings remain standing,while our long-term goal is to see whether earthquake engineering technologies can be married to existing technologies to achieve enhanced performance of buildings in the event of terrorist attacks,"he added.
Photographs taken by the investigators demonstrate the monumental damage to the World Trade Center towers and buildings nearby.One building a block away from the towers remains standing,but was badly damaged."This building is many meters away from the World Trade Center and yet we see a column (柱子) there that used to be part of that building,"explained A.Whittaker,Ph.D."The column became a missile that shot across the road,through the window and through the floor."
The visit to the area also brought some surprises,according to the engineers.For example,the floor framing (框架) system in one of the buildings was quite strong,allowing floors that were pierced by tons of falling debris (残砾) to survive."Good framing systems may provide a simple,but reliable strategy for blast resistance,"he added.Other strategies may include providing alternate paths for gravity loads in the event that a load-bearing column fails."We also need a better understanding of the mechanism of collapse,"said A.Whittaker."We need to find out what causes a building to collapse and how you can predict it."
A.Reinhorn,Ph.D.noted that"earthquake shaking has led to the collapse of buildings in the past.Solutions developed for earthquake-resistant design may apply to blast engineering and terrorist-resistant design.Part of our mission now is to transfer these solutions and to develop new ones where none exist at present."
67.The question raised in the first paragraph is oneC.
A.that was asked by structural engineers a month ago
B.that is too difficult for structural engineers a month ago
C.that was never thought of before the terrorist attack
D.that terrorists are eager to find a solution to
68.The column mentioned by Dr.WhittakerA.
A.was part of the building close to the World Trade Center
B.was part of the World Trade Center
C.was shot through the window and the floor of the World Trade Center
D.damaged many buildings near the World Trade Center
69.A surprising discovery made by the investigators during their visit to ground zero is thatB.
A.floors in the faraway buildings remained undamaged
B.some floor framing systems demonstrate resistance to explosion
C.complex floor framing systems are more blast resistant
D.floors in one of the buildings were pierced by tons of debris
70.What Dr.Reinhorn said in the last paragraph may imply all the following EXCEPT thatD.
A.blast engineers should develop new solutions for terror-resistant design
B.blast engineering can borrow technologies developed for terror-resistant design
C.solutions developed for earthquake-resistant design may apply to terrorist-resistant design
D.blast engineering emerges as a totally new branch of science.
分析 本文主要讲述了人们在经历了美国世贸中心被恐怖分子袭击后如何想办法建造出能经受得住恐怖分子攻击的建筑,以及目前的进展状况.
解答 67-70 CABD
67.C 考查细节推理,根据第一段关键信息提示:a question that would otherwise have been completely unthinkable.可知本题答案为C选项.
68.A考查细节推理,根据原文第三段中的…we see a column (柱子) there that used to be part of that building可知本题答案为A选项.
69.B 考查细节推理,根据文章倒数第二段Good framing systems may provide a simple,but reliable strategy for blast resistance可知本题答案为B选项.
70.D 考查细节推理,文章最后一段指出:关于抵抗恐怖袭击的建筑设计是源自抗震设计的灵感,并非全新的科学理念;故本题答案为D选项.
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.