1. The chanterelle, a type of wild mushroom, grows

beneath host trees such as the Douglas fir, which

provide it with necessary sugars. The underground

filaments of chanterelles, which extract the sugars,

in turn provide nutrients and water for their hosts.

Because of this mutually beneficial relationship,

harvesting the chanterelles growing beneath a

Douglas fir seriously endangers the tree.

Which of the following, if true, casts the most doubt

on the conclusion drawn above?

(A) The number of wild mushrooms harvested has

increased in recent years.

(B) Chanterelles grow not only beneath Douglas firs

but also beneath other host trees.

(C) Many types of wild mushrooms are found only

in forests and cannot easily be grown

elsewhere.

(D) The harvesting of wild mushrooms stimulates

future growth of those mushrooms.

(E) Young Douglas fir seedlings die without the

nutrients and water provided by chanterelle

filaments.

我觉得应该选e啊，可是答案是d

I think you might have misread the question. It is "weaken" type of

question, not support.

总教头，让我感觉奇怪的是它的逻辑关系：Because of this mutually beneficial relationship,

harvesting the chanterelles growing beneath a Douglas fir seriously endangers the tree.，为什么mutually beneficial会endanger呢？

哦，我知道了

他因导致

Because of this mutually beneficial relationship, 所以结论是harvesting导致endanger...问削弱

仔细看题