[問題]OG11th-DiagnosticTest-Q25

[dibert8]

我們實在不知道甲蟲處理視覺資訊的情況(e.g.獵物改變方向越頻繁就加重資訊量),但 GMAT 的題目對這些細節似乎不太在意,只要照字面給的條件去推論就行.

[autumn713]

呵呵~這題好像換了選項就需要新的解釋了


下圖表示甲蟲和獵物的飛行行為(C選情境)
---->----- (飛) ~~(停) X(獵物開始逃的起點)

甲蟲飛行行為 ----->----- ~~ ----->----- ~~ ----->----- ~~----->-----
獵物飛行行為 ~~~ X ----------->----
------------------------蟲開始飛時，甲蟲並沒有看到，pause後才看到才能去追

支持了假說二

但接下來可能跟樓上說的一樣
是說they maintained a fixed time interval, 然後之後可以increase its speed. 不是就等於weaken掉第一個hypothesis嗎?





--------下面是我覺得很矛盾的地方，不想讓自己矛盾的不要看下去-------------

這也可以解釋為甲蟲追到一半就"翅"軟，必須暫停休息

PP-Test1-24 的正確(C)選寫的time interval
剛好跟OG11th-DiagnosticTest-Q25正確(B)選Frequency是相反狀態

這個真是讓我眼花兼頭大
不過我還是想不懂為什麼PP那提答案是C
首先B
(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.
排除blind的原因 而且 pause equally frequently 感覺上就是因為第一個假設"they cannot maintain their pace" 所以每隔一段時間就要來固定休息一下 感覺上是個不錯的答案 因為支持pace反對blind.

但是C:
(C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee逃走, the beetle increases its speed after its next pause.
"The beetles maintain a fixed time interval between pauses" 感覺上就是每追一段時間要固定休息一下 好像支持"they cannot maintain their pace" 所以每隔一段時間就要來固定休息一下

然後insect that had been stationary begins to flee的時候又可以看到 所以代表沒有瞎 但是insent要逃走的時候甲蟲又會急起直追??

好怪怪怪怪怪~~ 還是選不出C...

[autumn713]

又想了一下 PP那提
看起來BC都可以排出瞎的原因 所以救要看看誰可以支持pace的原因

(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.
譬如說 每追五分鐘要休息一分鐘 不管是上坡還是下坡

(C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee逃走, the beetle increases its speed after its next pause.
譬如說 每追五分鐘要休息一下 但每次休息多久沒有說
但獵物要逃走的時後 在第二次休息以後 小蟲會加速


所以感覺上...
好像B說的是 小蟲pace也沒問題 但是C pace好像就不穩了
所以選C??


===
天阿 我不會是練pace練瘋了吧
怎麼連這樣子的解釋都想的出來.......><

[dibert8]

在來推敲一下題目的兩個假說:
1. beetles cannot maintain their pace and must pause for a moment's rest 甲蟲飛一陣便需要休息,以免上氣不接下氣.
2. while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly do blind and stop 甲蟲飛一陣便看不見了,需要停下來處理視覺資訊再飛
現在想想,把甲蟲的調息看作它需要調整體力而休息,可能比較容易理解.
(B) 如果是體力不好,需要調整,應該不會固定時間休息(上坡顯然比較喘一些),但是它又看得見,所以不是1 也不是 2.
(C) 在固定時間處理視覺資訊應該可以理解,甲蟲加速,因為在那段時間它看得見(沒在處理視覺資訊),看到獵物要逃了趕緊追,所以沒有體力的問題.

[ggethan]

(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.

想了一下:答案(c)很清楚
(c)說每次追獵物的時間長度都一樣(ex:每追五分鐘停十秒),即使獵物都快跑了,甲蟲還是會停下來,然後休息十秒鐘之後以比剛剛更快的速度追獵物
這代表:其實體力夠,若體力不夠的話,下次以更快的速度追獵物應該只能跑四分鐘,但(c)說每次追的時間長度都一樣

所以排除體力不夠的因素-->就得到是因為視覺來不及處理的因素了

[tippi]

假設1. beetles cannot maintain their pace and must pause for a moment's rest
假設2. while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly do blind and stop

這題目思考了一整晚發現假設2中有個關鍵字”rapidly”，
如果答案(c)的立場是支持假設2表示甲蟲速度已經快的看不見東西了,所以才做固定時間的休息，因此支持此假設2確實成立,那就是說不能再快了，
可是答案(c)又說when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause
把速度加到比先前還快,不就會更看不見東西，所以矛盾了支持假設2 的說法。

因此我的認知為是支持假設1、反對假設2 ，甲蟲本來眼睛就沒盲因此在休息時可以看到獵物要逃走，然後就以剛休息完的體力加速追趕
好怪呀…想了一整晚~~

[chris8888]

Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However、when running toward an insect、a tiger beetle will intermittently stop and then、a moment later、resume its attack. Perhaps the beetles 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 adequately process the resulting rapidly changing visual information and so quickly do blind and stop.

Which of the following、if discovered in the 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 stops and runs away without its usual intermittent stopping.
兩者推翻
(B)In pursuing a swerving insect、a beetle alters its course while running (跑的時候可以轉向, 視覺處理沒問題)and its pauses become more frequent (表示間歇的休息是必要的)as the chase progresses.

(C)In pursuing a moving insect、a beetle usually responds immediately to changes in the insect's direction、and it pauses equally frequently whether the chase is up or down an incline.
推翻兩者
pauses equally frequently 暫停的頻率完全相同 => 不代表intermittently 間歇性
間歇性 : fly fly / stop / fly fly fly / stop stop / fly / stop / fly fly fly fly / stop stop stop stop
暫停頻率完全相同 : fly fly fly / stop / fly fly fly / stop / fly fly fly / stop / fly fly fly / stop /...........都一樣

(D)If、when a beetle pauses、it has not gained on the insect it is pursuing、the beetle generally ends its pursuit.
無關
(E)The faster a beetle pursues an insect fleeding directly away from it、the more frequently the beetle stops.
無關

[craigchsieh]

在來推敲一下題目的兩個假說:
1. beetles cannot maintain their pace and must pause for a moment's rest 甲蟲飛一陣便需要休息,以免上氣不接下氣.
2. while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly do blind and stop 甲蟲飛一陣便看不見了,需要停下來處理視覺資訊再飛
現在想想,把甲蟲的調息看作它需要調整體力而休息,可能比較容易理解.
(B) 如果是體力不好,需要調整,應該不會固定時間休息(上坡顯然比較喘一些),但是它又看得見,所以不是1 也不是 2.
(C) 在固定時間處理視覺資訊應該可以理解,甲蟲加速,因為在那段時間它看得見(沒在處理視覺資訊),看到獵物要逃了趕緊追,所以沒有體力的問題.

看了一堆討論想半天，我還以為是支持rest否定blind，原來我想相反了，
您的解釋真清楚，讓我一看就明瞭，小弟真的佩服～
只是這麼繞的題目下次再給我遇上，還是很容易犯錯...