(B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline.（如果他是停下休息，up/down incline应该停下的次数不同，因为上坡累下坡容易）所以他不是停下休息，所以rule out了假设1啊。为什么不对呢？？
(B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline. 在追捕移动昆虫的过程中，甲虫能立即对昆虫的方向做出反应，而且无论是在上坡还是下坡都以同样的频率停滞—能看到移动的物体削弱第二个假设，无论上坡下坡都以同样的频率停，表明不是体力的原因，削弱第一个假设。所以两个假设都削弱。 (C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause. 每次甲虫停滞之间的时间都是固定的，但速度在每次停顿后都有提高。---有助于削弱第一个假设甲虫通过停顿来保持速度，因为体力不好不可能速度越来越快。而每跑一段就需要重新停下来定位，支持了第二个假设：甲虫不能处理快速视觉信息。
(B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline. 在追捕移动昆虫的过程中，甲虫能立即对昆虫的方向做出反应，而且无论是在上坡还是下坡都以同样的频率停滞—能看到移动的物体削弱第二个假设，无论上坡下坡都以同样的频率停，表明不是体力的原因，削弱第一个假设。所以两个假设都削弱。 (C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause. 每次甲虫停滞之间的时间都是固定的，但速度在每次停顿后都有提高。---有助于削弱第一个假设甲虫通过停顿来保持速度，因为体力不好不可能速度越来越快。而每跑一段就需要重新停下来定位，支持了第二个假设：甲虫不能处理快速视觉信息。
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发表于 2009-6-11 23:51:00
