【单选题】{{B}}Passage Four{{/B}}
The first important lesson of the World TradeCenter collapse is that tall buildings can withstand the impact of a large jetliner. The twin towers were supported by 59 perimeter columns on each side.Although about 30 of these columns, extending from four to six floors, were destroyed in each building by the impact, initially both towers remained standing.Even so. the death toll (代价)was appalling—2245 people lost their lives.
I was once asked, how tall buildings should be designed given what we’d learned from the World TradeCenter collapse. My answer was, "Lower. " The question of when a tall building becomes unsafe is easy to answer.Common aerial fire-fighting ladders in use today are 100 feet high and can reach to about the 10th floor, so fires in buildings up to 10 stories high can be fought from the exterior (外部). Fighting fires and evacuating occupants above that height depend on fire stairs. The taller the building, the longer it will take for firefighters to climb to the scene of the fire. So the simple answer to the safety question is "Lower than 10 stories."
Then why don’t cities impose lower height limitsA、60-story office building does not have six times as much rentable space as a 10-story building. However, all things being equal, such a building will produce four times more revenue and four times more in property taxes. So cutting building heights would mean cutting city budgets.
The most important lesson of the World TradeCenter collapse is not that we should stop building tall buildings but that we have misjudged their cost. We did the same thing when we underestimated the cost of hurtling along a highway in a steel box at 70 miles per hour. It took many years before seat belts, air bags, radial tires, and antilock brakes became commonplace.At first, cars simply were too slow to warrant concern. Later, manufacturers resisted these expensive devices, arguing that consumers would not pay for safety. Now we do—willingly.
B．neutral
C．indifferent
D．critical
网考网参考答案：D
网考网解析：
纵观全文，作者的态度非常清楚，前面告诉我们低于10层的楼房会比高楼大厦安全得多，而在最后一段指出，使用安全带安全气囊等装置花费了人们不少时间才意识到其价值所在，而建造低层楼房也是人们在经历了教训之后才会最终接受并实施的做法。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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