作者：英吉
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.
(A) has for centuries been slowly weaving its way through the roots of trees, to become
(B) has slowly woven its way through the roots of trees for centuries, and so becoming
(C) that has been slowly weaving its way through the roots of trees for centuries has become
(D) that has for centuries slowly woven its way through the roots of trees and has become
(E) that, having slowly woven its way through the roots of trees for centuries, to become
原文意思：在一个地方的土壤下，一种东西慢慢地干一件事情，变成了一个什么东西。
题目分析：A用to become意思就是这个东西慢慢地干一件事情目的是变成1个东西，意思有点别扭。B用and so becoming和前面无法形成并列对应关系，干掉。C说这个东西慢慢地干了一件事从而变成了一个什么东西，逻辑通顺。D用and has become就无法和前面形成并列关系，干掉。E连谓语都没有，杀！
