标题: 快考试的人求问GWD T-3-Q21题!谢谢各位NN! [打印本页] 作者: soooooohot 时间: 2013-4-2 20:49 标题: 快考试的人求问GWD T-3-Q21题!谢谢各位NN! 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.