sc

celeste

These extensive forest reserves must be defefended from he acuqisitive hands of those whose
ruthless axes ( would destroy the trees and ) expose the land the ravages of sun and rain .


B Will destroy ......

which one》

tongxun

I choose " will destroy".

Q30

还有其他的答案吗？

celeste

but the answer seems A

I doubt it

tongxun

would与will的区别应该是“确定将发生”与“可能发生”，在本题目中，由于题目的主干用must be，应该表明肯定有此类事情发生。
大家认为如何？

celeste

would           
Used after a statement of desire, request, or advice:
用于表愿望、请求或建议的陈述之后：
用于有礼貌的请求：
Used to indicate uncertainty:表示不确定之意

Lancome

one explanation in the dictionary is :

would, used to describe a hypothetical action or event in the present.
eg. It would be difficult to make an accurate forecast.

I think here "would "is used in a conditional sentense
I'll choose a.

sunny

完全同意。没有确定要发生时，当然要用虚拟时态了，否则还用采取什么行动呢？