题目信息
Driving the steep road to the mountaintop Inca ruins of Machu Picchu is potentially dangerous and hiking there is difficult. Now the Peruvian government is installing a cable car that will make access much easier, and hence result in a large increase in tourism. However, since the presence of large numbers of tourists tends to accelerate the deterioration of a site, installation of the cable car is certain to result in harm to the ruins.
Which of the following, if true, most seriously calls into question the argument?
A:The daily number of tourists that are expected to take the cable car to Machu Piccu is smaller than the original resident population of Incas.
B:The construction of the cable car terminal at Machu Picchu will require the use of potentially damaging heavy machinery at the site.
C:Machu Picchu is already one of the most popular tourist sites in Peru.
D:Natural weathering will continue to be a more significant cause of the deterioration of Machu Picchu than tourist traffic.
E:The cable car will replace the tour buses whose large wheels and corrosive exhaust at present do significant damage to the site.
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正确答案：
E:The cable car will replace the tour buses whose large wheels and corrosive exhaust at present do significant damage to the site.
A说旅客和原有居民数量的比较，out of scope;
B说建造cable car将会对这个地方造成损害，支持原文；
C说这个地是著名旅游景点之一，没说。
D说天气对这个地方的损害更大，不管天气怎么样，缆车能破坏的话还是会继续破坏，无法驳斥原文；
E说缆车将取代会造成更大破坏的bus, 也就是反面论证了缆车会改善当地的破坏现状，可以驳斥，留着。
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