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题库 / GMATLA-CR-40
The population of desert tortoises in Targland's Red Desert has declined, partly because they are captured for sale as pets and partly because people riding all-terrain vehicles have damaged their habitat. Targland plans to halt this population decline by blocking the current access routes into the desert and announcing new regulations to allow access only on foot. Targland's officials predict that these measures will be adequate, since it is difficult to collect the tortoises without a vehicle.
Which of the following would it be most important to establish in order to evaluate the officials' prediction?
Whether possessing the tortoises as pets remains legally permissible in Targland
Whether Targland is able to enforce the regulations with respect to all-terrain vehicle entry at points other than the current access routes
Whether the Red Desert tortoises are most active during the day or at night
Whether people who travel on foot in the Red Desert often encounter the tortoises
Whether the Targland authorities held public hearings before restricting entry by vehicle into the Red Desert
Goal:停止对乌龟的捕捉。 Plan：封锁所有进入沙漠的路线，只允许步行进入。问evaluate
choice b, 是否可以在除了当前可以进入的路线以外，对于所有汽车通行道执行这个regulations。correct，如果除了当前可进入道路之外，还有其他一些不为人知的小路可以开车进去那么regulations是没有作用的
choice d, 是否步行的人是否会遇到乌龟。premise里已经说了没有车捕捉乌龟很难。所以即使步行者遇到了也带不走乌龟
choice b, 是否可以在除了当前可以进入的路线以外，对于所有汽车通行道执行这个regulations。correct，如果除了当前可进入道路之外，还有其他一些不为人知的小路可以开车进去那么regulations是没有作用的
choice d, 是否步行的人是否会遇到乌龟。irrelevant，premise里已经说了没有车捕捉乌龟很难。所以即使步行者遇到了也带不走乌龟
实施方法是限制车辆进入沙漠
步行很难抓到乌龟这个事是另一层逻辑里的因（果是方案是合适的），这层因果关系和方案本身无关，而评估是要评估方案本身
所以D其实是无关项
如果只是封闭当前去沙漠的路线，也不见得其他人不会开发其他路线开车去沙漠
B 政府能否管控车辆，而不是封闭沙漠的路线，因为开车能捉鬼还破坏栖息地，所以管控车辆更有效
如果yes，weak了conclusion；no, strong 了 conclusion. or yes, strong the C, no, weak the C------right answer
要evaluate的prediction是：封现有道路只允许步行的措施能有效阻止乌龟population declinedecline有两个原因，一是人们捉来当宠物（也没说现在是否合法，也许一致非法但一直有人捉乌龟呢），二是四驱车破坏habitat
步行捉不了乌龟，消灭原因一，b选项直接回应原因二，最优。
a选项，就算现在养乌龟是合法的，突然另一个立案养乌龟非法化了，但在这个封路的情况下也抓不了乌龟呀，所以不管合法违法，封路措施都可能对原因一有效
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since it is difficult to collect the tortoises without a vehicle
所以就算更容易遇到龟 也无法收集呀！（kmf）
注意文中的current！！
it is difficult to collect the tortoises without a vehicle...步行容易遇到，可是没有车没法collect带走，遇到也没用登录 或 注册 后可以参加讨论
本题的题点在：by blocking the current access routes into；摆出的2点因素均通过block routes解决，所以只需要担心是否potential路线都给堵住了。