追猎物时,beetle根据猎物的位置变化马上转变respond immediately to changes(否定视力论),并且无论猎物上坡还是下坡都以一样的频率休息 pause equally frequently(否定体力论,假若支持累要休息,上坡休息应该更频繁)。此选项2个原因都否定了
0人
raintsai2019-04-22 22:41:10
Actually, this result provides both hypothesis are wrong. From author's argument, we know there are two reasons that make beetles have a moment's rest. 1. maintain their pace and 2. visual problem. Look at this choice, beetles usually respond immediately to changes in the insect's direction shows that beetles have no visual problem. Pause equally frequently whether the chase is up or down an incline shows that beetles can maintain their pace. Therefore, choice B is wrong.