题目选项分析

Beneath the soil of the Malheur National Forest in eastern Oregon, a fungus that, having slowly woven its way through the roots of trees for centuries, to become the largest living single organism known to humans.

Beneath the soil of the Malheur National Forest in eastern Oregon, a fungus that has been slowly weaving its way through the roots of trees for centuries has become the largest living single organism known to humans.