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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
A为什么不可以呢。不是不是partly because they are captured for sale as pets，那如果说非法了不就好了？
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 decline
decline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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