gwd 3-28 整理中没有

GWD-3-Q28:
The coyote is one of several recent ecological success stories:  along with the white-tailed deer, the moose, and other species that are enlarging their natural domains, they have established themselves as supreme adapters in an era when the capability to adjust to the environmental changes wrought by human beings has created a whole new class of dominant large mammals.

they have established themselves as supreme adapters in an era when the capability
they have established themselves as being supreme adapters in an era when being able
it has established itself as a supreme adapter in an era when to be able
it has established itself as being a supreme adapter in an era when its ability
it has established itself as a supreme adapter in an era when the ability [E]*

C中的be able to do和 E中的the ability to do 有什么区别？？

觉得这应该用名词, when the ability (...) has created

如果是C, when (it has been) able to (...) has created.

那be capable of

have the capability to do 与以上又有什么区别？？

我在D和E之间斗争了很久。我觉得

E中的as a supreme adapter 比 as being a supreme adapter 正确，

但是

D中的 its ability比 E 中的 the ability 要强。

有没有人能理解我问得问题？

我认为D选项中的being多余，这里的as是介词，当" 作为" 讲，后面直接加名词。being只有在表示正在进行的时候才用，一般不用。

另外我认为its ability和the ability没有太大区别，the ability是特指后面的to adjust to是不定式作ability的定语。

The coyote is one of several recent ecological success stories,it has established itself as a supreme adapter in an era when the ability .首先排除ab

c中的to be 和d 中的being 都不符合ets的出题习惯。所以只有e满足了。这是比较快的排除方法。

我认为E中的the ability是more precise的

肯定不是The coyote的ability created a whole new class of dominant large mammals,而是泛指适应环境的能力created a whole new class of dominant large mammals

个人观点:

its的加入因该会更precise, 但是ETS在正确选项里面没有加入, 比较的让人难以理解, 请教!