OG12-42 啊，这样也算对称？那我以后都不会做对称了~
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" foe more than 30 acres in the soil of a Michigan forest.
A.extending
B.extends
C.extended
正解是A。OG说spawned和extending对称，我真的不明白啊，要对称也是extended更对称啊，为什么不选C啊？？？如果说是时间上有差异，一个是描述过去，一个是描述现在，那为什么不选B啊？ |
