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题库 / Prep2007E1-CR-20
For years the beautiful Renaissance buildings in Palitito have been damaged by exhaust from the many tour buses that come to the city. There has been little parking space, so most buses have idled at the curb during each stop on their tour, and idling produces as much exhaust as driving. The city has now provided parking that accommodates a third of the tour buses, so damage to Palitito's buildings from the buses' exhaust will diminish significantly.
Which of the following, if true, most strongly supports the argument?
The exhaust from Palitito's few automobiles is not a significant threat to Palitito's buildings.
Palitito's Renaissance buildings are not threatened by pollution other than engine exhaust.
Tour buses typically spend less than one-quarter of the time they are in Palitito transporting passengers from one site to another.
More tourists come to Palitito by tour bus than by any other single means of transportation.
Some of the tour buses that are unable to find parking drive around Palitito while their passengers are visiting a site.
这不能affect argument（Ron）。
另外，注意文中结论的significantly,与E的some不对应。与C的typically对应。
premise：parking space少，所以很多车会在每一站停靠在路边，idling（挂空挡）造成的exhaust和driving是一样的。
结论：建造了更多的parking space==》bus的exhaust会显著的减少
gap：parking space建造好了==》（很多bus用这个space）==》（idle的时间少了）==》exhaust少了
strengthen的目的就是把这个逻辑链补清楚就可以了
C直接说明1/4时间transport，那就是仍有3/4时间是在Palitito内idling等客，有了停车场，直接削减3/4时间的尾气排放，当年比D更能削弱了
旨在说明解决parking的问题是有意义的
而修停车场只能减少1/3大巴idling的尾气，答案要说明，这部分是显著的
目标：减少大巴尾气对古建筑的损害
方案：提供更大的停车场降低空挡等客人的时间
评估方向：CQ1 方案可行性问题， C选项提出了 4分之1的时间是载客，那么4分之3是在等客人，说明等客人排尾气是损害建筑的原因，也就暗示方案是可行的，将大巴车停在停车场就可以解决等客人排尾气，从而保护建筑物。
总尾气=idling+driving 修停车场只能减少idling的尾气
D说明 两者比例问题，idle 占比大，更能解决问题
E在改写原文的premise。
这不能affect argument（Ron）。不管等人的时候是drive 还是idle，exhaust是一样的
这不能affect argument（Ron）。
另外，注意文中结论的significantly,与E的some不对应。与C的typically对应。
weaken顺手了...
A/B/D inrrelevent
C strength
E weaken
E应该不是削弱登录 或 注册 后可以参加讨论
错选E。是文中的premise的一个变体，不是答案！
说得对
some 也用得不对登录 或 注册 后可以参加讨论