ChaseDream

标题: 急！！请NN帮忙分析PREP上一CR的逻辑简图 [打印本页]

作者: bdx2010 时间: 2009-11-15 19:14
标题: 急！！请NN帮忙分析PREP上一CR的逻辑简图
24. key c

Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack.

erhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.

Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?

(A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately turns and runs away without its usual intermittent stopping.

(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.

(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.

(D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit.

(E) When an obstacle is suddenly introduced just in front of running beetles, the beetles sometimes stop immediately, but they never respond by running around the barrier.

作者: ajassmine 时间: 2009-11-22 16:33
题目：support one and undermine the other

hypothesis 1: 因速度原因，停下来休息。
hypothesis 2：因眼盲原因，停下来。
C 支持视觉原因，踢掉速度原因。停下来后，可以加速。

A：不必停下来。HYPO1，2双踢飞~
B：快速转弯，并且能及时停下来。HYPO1，2双支持。
D：停下以后发生的事情，跟双HYPO无关。
E：因障碍物停下来，跟双HOPY无关。

欢迎光临 ChaseDream (https://forum.chasedream.com/)