Only a reduction of 10 percent in the number of scheduled flights using Greentown's airport will allow the delays that are so common there to be avoided. Hevelia airstrip, 40 miles away, would, if upgraded and expanded, be an attractive alternative for fully 20 percent of the passengers using Greentown airport. Nevertheless, experts reject the claim that turning Hevelia into a full-service airport would end the chronic delays at Greentown.

Which of the following, if true, most helps to justify the experts' position?


Turning Hevelia into a full-service airport would require not only substantial construction at the airport itself, but also the construction of new access highways.

A second largely undeveloped airstrip close to Greentown airport would be a more attractive alternative than Hevelia for many passengers who now use Greentown.

Hevelia airstrip lies in a relatively undeveloped area but would, if it became a full-service airport, be a magnet for commercial and residential development.

If an airplane has to wait to land, the extra jet fuel required adds significantly to the airline's costs.

Several airlines use Greentown as a regional hub, so that most flights landing at Greentown have many passengers who then take different flights to reach their final destinations.

考题讲解

情景:只有减少Greentown机场现有航班量的10%才能避免飞机延误情况的出现。Hevelia的简易机场在Greentown机场的40英里之外。如果可以对其进行升级与扩建的话,它可以成为20%现在用Greentown机场乘客的另一选择。然而,专家们并不支持将Hevelia简易机场扩建成全方位服务机场可以解决Greentown机场飞机延误的问题这一说法。

推理:本题是一个“现象解释型考题”。按照正常逻辑来说,即,结论应该为“将Hevelia简易机场扩建成全方位服务机场可以解决Greentown机场飞机延误的问题”。本题是方案推理。推理结构为:
目标:减少Greentown机场现有航班量的10%
方案:将Hevelia简易机场扩建成全方位服务机场

选题方式:方案推理有三个评估方向,简而言之,即,答案选项一定和方案的内容相关。

选项分析:

A选项:把Hevelia变成一个全方位服务机场不仅需要对机场进行建设,还需要对配套高速公路进行建设。本选项给出了方案的一个可能的增加成本的情况,可以在一定程度上削弱方案,可暂时保留。

B选项:相较于Hevelia来说,Greentown周边第二大的简易机场会对乘客更具吸引力。本选项给出了一个可能的更好的方案,和推理文段中的方案无关。

C选项:Hevelia机场坐落于一个相对欠发达的地区,但是如果其成为全方位服务机场的话,则将会吸引大量的商业与住宅开发。本选项给出了这个方案的一个附加好处,不能评估本方案推理。

D选项:
如果飞机需要等待着陆的话,额外需要的燃油将会大大增加航空公司的成本。本选项和方案无关。

E选项:
Correct. 因为Greentown是一个地区性的中转站,所以大部分降落在Greentown的乘客都需要换乘其它飞机抵达最后的终点站。若本选项成立,则即使Hevelia的机场建成了,由于它没有旅客能换乘的航班,所以不能达到旅客分流的目的。属于CQ1:方案的可行性问题。

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