og12 语法第42题，请牛人解答

Lyssazhao

Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is a interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized sport 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

og上解释说，A正确是因为extending refers to something that continues into the present. 那为什么不用has extending啊？

everine

has extending?是啥？has extended?没这选项啊。。

维小C

两修饰成分并列：原句可以还原：
...tentacles (that is) spawned by a single fertilized sport some 10,000 years ago and (that is) extending for more than 30 acres in the soil of a Michigan forest.
ps.看到and就想平行。但要注意是和什么平行。
gmat中有很多分词直接做修饰的成分出现，例如这题。一开始很容易搞不清这是什么句子成分，多做多总结就好了。
good luck！

Lyssazhao

谢谢，记下了。

xbx_lee

两修饰成分并列：原句可以还原：
...tentacles (that is) spawned by a single fertilized sport some 10,000 years ago and (that is) extending for more than 30 acres in the soil of a Michigan forest.
ps.看到and就想平行。但要注意是和什么平行。
gmat中有很多分词直接做修饰的成分出现，例如这题。一开始很容易搞不清这是什么句子成分，多做多总结就好了。
good luck！

-- by 会员 维小C (2010/7/3 21:37:06)

(that was) spawned b a single fertilized spore some 10,000 years ago ...

liberzephyr

OG的解释是 extending 表示一直延续到现在的动作，不是一次性的动作
前面spawn是一次性的，后面extend一直在延续

bensonbao

OG的解释是 extending 表示一直延续到现在的动作，不是一次性的动作
前面spawn是一次性的，后面extend一直在延续

-- by 会员 liberzephyr (2010/7/24 21:10:54)

那這樣的話不是和前面的同學的解釋衝突了麽? 加了(that was) spawned by.......(that was) extending for
還有 為什麽原文裏面的a giant fungus that is an ... 要用is的?

cycy881125

按照og其他题的解释，使用is是因为这是一种general statement.  fungus is an interworn filigree of mushrooms 就是一种所谓的常识。
personally speaking。。。

luweitong

fungus是单数形式，其复数形式是fungi。。。