求救:GWD 这个月的JJ songbirds那篇

GavinDing

以下是引用anistonlucky在2008-4-20 14:24:00的发言：
请问SB这篇是GWD中的哪套哪一题？

TOO版

13-17 GWD25-Q 13 to 15:

ambrosecelin

up~~~!

keith139

Q16:TTGWD27-Q32

The passage suggests that removing waterfowl-nest predators could possibly have a negative effect on songbird populations because

A.songbird populations could then grow to unsustainable numbers

B.small-mammal population could then move out of the uplands into wetland areas

C.competition among remaining waterfowl-nest predators could decrease significantly

D.a resulting increase in waterfowl populations could crowd out songbird populations

E.a resulting increase in small-mammal populations could increase small-mammal predation on songbirds

关于这个问题，文章只是说了nest相关的，跟population貌似没有什么关系啊？？
麻烦那个高人给看看？

passiona

Q16:TTGWD27-Q32

The passage suggests that removing waterfowl-nest predators could possibly have a negative effect on songbird populations because

A.songbird populations could then grow to unsustainable numbers

B.small-mammal population could then move out of the uplands into wetland areas

C.competition among remaining waterfowl-nest predators could decrease significantly

D.a resulting increase in waterfowl populations could crowd out songbird populations

E.a resulting increase in small-mammal populations could increase small-mammal predation on songbirds

关于这个问题，文章只是说了nest相关的，跟population貌似没有什么关系啊？？
麻烦那个高人给看看？

-- by 会员 keith139 (2010/7/1 0:52:33)

line 25

keith139

Q16:TTGWD27-Q32

The passage suggests that removing waterfowl-nest predators could possibly have a negative effect on songbird populations because

A.songbird populations could then grow to unsustainable numbers

B.small-mammal population could then move out of the uplands into wetland areas

C.competition among remaining waterfowl-nest predators could decrease significantly

D.a resulting increase in waterfowl populations could crowd out songbird populations

E.a resulting increase in small-mammal populationscould increase small-mammal predation on songbirds

关于这个问题，文章只是说了nest相关的，跟population貌似没有什么关系啊？？
麻烦那个高人给看看？

-- by 会员 keith139 (2010/7/1 0:52:33)

line 25

-- by 会员 passiona (2010/7/1 4:33:43)

line 25是说会影响songbird nesting的成功率，跟它自己本身的数量有什么关系啊？？是说nest成功率下降，所以population也下降么？？我怎么觉得这道题就不对呢？如果是问songbird nest就好了，而且文中说small mammals对songbird的影响也是限定在prey on the latter's nest上。
顺便想问一下，这个题我怎么在论坛里搜不到有关的讨论啊？？这个链接是我搜关键字songbird出来的，貌似还不应该发在这个区，怎么转啊？？谢谢！

passiona

除掉吃wn的捕食者可以影响（减小）sb nesting成功率，因为吃sb的小动物population增加

joey19880204

解释得很好。
这篇我当时做GWD的时候也没看明白这些个玩意儿到底是什么关系。。。

keith139

除掉吃wn的捕食者可以影响（减小）sb nesting成功率，因为吃sb的小动物population增加

-- by 会员 passiona (2010/7/1 11:13:58)

你说的这句我明白，我想问的是为什么要问sb的population下降，而不是the DECLINE of sb NESTING successful rate？是说可以用nesting successful rate的下降=>sb的population下降么？？
题干中问的是sb的population，e选项也是关于small mammals prey on SONGBIRD, not on NEST of songbird. 文章的原文也是说small mammals一直影响的都是SB的nest，为什么题干中说会影响SB的population？所以吧，我想问的就是这个nest和population有关系么？？？

哎，我的语言表达能力啊……谢谢楼上耐心回答，十分感谢！

fishaha

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