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?
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.
The construction of the cable car terminal at Machu Picchu will require the use of potentially damaging heavy machinery at the site.
Machu Picchu is already one of the most popular tourist sites in Peru.
Natural weathering will continue to be a more significant cause of the deterioration of Machu Picchu than tourist traffic.
The cable car will replace the tour buses whose large wheels and corrosive exhaust at present do significant damage to the site.
本文大体结构是一连串推理得出结论。第一个黑体前，说碎片可以通过J的大气的色谱分析得出，黑体说明事实，分析表明空前硫的痕迹。这是一个 a fact to be considered to get the conclusion 而后分析硫如何而来的，第二黑体表明if如果碎片进cloud layer，硫会渗进outer atmosphere。if 表明这黑体是consideration.
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发表于 2007-5-4 19:19:00
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