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题库 / Prep2007E1-SC-75
Beneath the soil of the Malheur National Forest in eastern Oregon, a fungus has for centuries been slowly weaving its way through the roots of trees, to become the largest living single organism known to humans.
has for centuries been slowly weaving its way through the roots of trees, to become
has slowly woven its way through the roots of trees for centuries, and so becoming
that has been slowly weaving its way through the roots of trees for centuries has become
that has for centuries slowly woven its way through the roots of trees and has become
that, having slowly woven its way through the roots of trees for centuries, to become
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AC区分
“在俄勒冈州东部的Malheur国家森林的土壤下缓慢地穿过树的根部编织”这个是对这个真菌的描述，是定语，而非成为最大种群的原因。所以A目的，逗号后的目的状语不对
为什么不能选a
B选前后不平行。
that has for centuries slowly woven its way through the roots of trees and has become 没有谓语
并不是并列的关系，而是有因果的递进