GWD2-v3

selvichyselvic

Keystone status appears to depend on                           15

context, whether of particular geography or of such factors as community diversity                         16

(for example, a reduction in species diversity may thrust more of the remaining species                     17

into keystone roles)

Question 3:

Which of the following, if true, would most clearly support the argument about keystone

status advanced in the last sentence of the passage (lines 15 – 19)?

A.      A species of bat is primarily responsible for keeping insect populations within an

ecosystem low, and the size of the insect population in turn affects bird species

within that ecosystem.    文中所述族群多樣性的內容在於物種與物種之間環環相扣,這部就是A的答案嗎? B只提到一物種在甲情況為主,在乙情況為副,何來環環相扣之語意?為何大家皆默認B而忽略A呢?

jessiexu84

me： E B D,too!that's great!

yanginottawa

But such predation on a dominant or potentially dominant                       10

species occurs in systems that do as well as in systems that do not have species that            

play keystone roles.

这句应该是这样吧：such predation on a dominant or potentially dominant species occurs in systems that do have species that play keystone roles as well as in systems that do not have species that play keystone roles.

mushroom_111

15-19行，谁给个翻译阿!

xuyuan200201

支持B

从原文16行的geography看出K status具有一定的地域性（可以在B中反映出来）

17行中说到当某一地区的生物多样性减弱时剩下的keystone species的K status会加强（B中说iguana在生物多样性较丰富的地区就不具有K status了）

我也刚刚作了这道题，开始选了D，后来又改成B了

不知道我理解的是否正确

大家讨论吧！

LunarLin

my answer is 2:E,3:B,4 too.

fengkunliu

Yes, E B D

katie83

第四题选C,

Keystone status appears to depend on                                                                               15

context, whether of particular geography or of such factors as community diversity              16

(for example, a reduction in species diversity may thrust more of the remaining species         17

into keystone roles)

D中"within the ecosystem"不正确,geography不属于ecosystem内的因素我觉得

大家的意见呢

gonghao

mine is EBD, too

guguzs

Question 3:

Which of the following, if true, would most clearly support the argument about keystone

status advanced in the last sentence of the passage (lines 15 – 19)?

这道题目里有“advanced"意思是不是应该是最后一句总结之前的说法？这样的话应该选D啊，请NN指教