Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized spore
some 10,000 years ago and extending for more than
30 acres in the soil of a Michigan forest.
A. extending
B. extends
C. extended
D. it extended
E. is extending
这是OG12上的第42题,答案是A,但是感觉OG的解释有点不太明白,有哪位大侠帮忙看下,为什么是A呢,谢谢 |