Q9: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
sorry,it should be ：the answer is B, but D is also reasonable.

D中如果people who travel on foot in the Red Desert often encounter the tortoises，那么 tortoises就会被captured for sale as pets，数量还是会减少阿

当然b也是对的

D错. 我的理由是

1)       前提已经说了difficult to collect the tortoises without a vehicle, D好像在直接反前提.

2)       按前提一定是对的原理. 前提说是collect, D说encounter. Encounter了以后, 没有vehicle还是不能collect

3)       原文说captured for sale, 即干这行的才会capture. D说people. 好像无关.

B对. 我的理由是:

有B, ATV可以非常规进入, 根据前提 1) capture 2)damage habitat. 对结论weaken. B取非对结论有support. 所以我喜欢B.

个人意见. 欢迎讨论.

D错. 我的理由是

1)       前提已经说了difficult to collect the tortoises without a vehicle, D好像在直接反前提.

2)       按前提一定是对的原理. 前提说是collect, D说encounter. Encounter了以后, 没有vehicle还是不能collect

3)       原文说captured for sale, 即干这行的才会capture. D说people. 好像无关.

B对. 我的理由是:

有B, ATV可以非常规进入, 根据前提 1) capture 2)damage habitat. 对结论weaken. B取非对结论有support. 所以我喜欢B.

个人意见. 欢迎讨论.