According to paragraph 4, all of the following are true of the food of
snowshoe hares EXCEPT
A The preferred food fore hares consists of willow and birch twigs.
B High fiber food is the most nutritious for hares.
C Depletion of the supply of willow and birch twigs cause low birth and growth
rates.
D The food supply takes two or three years to recover after a peak in hare
population density.
答案是B
我的疑问是: D.动物数量到达高峰后才开始回复plants
原文:我怎么觉得意思是动物数量下降了才开始回复plant
况且willow and birch 是树木类本身就是high fiber吧, B哪里错了?
是我哪里逻辑不通吗~"~a 求大大解释! 感恩!
附上此题对应的原文
The preferred foods of snowshoe hares are willow and birch twigs.
As hare density increases, the quantity of these twigs decreases,
forcing the hares to feed on low-quality high-fiber food.
Lower birth rates, low juvenile survivorship, and low growth rates follow,
so there is a corresponding decline in hare abundance.
Once the hare population has declined, it takes two to three year
for the quantity of twigs to recover.

B很明显是答案~~因为食物短缺时hares才被迫吃high fiber food原本主食是 willow 跟 birch..当它们产量减少时才去吃的high fiber food 跟 willow and birch twigs 是不同东西吧:p可以把 hares 想成阿公阿嬷,twigs 是米饭,high fiber 是地瓜

原文里也有low-quality high hiber food,所以并不是所有high fiber food 都是most-nutritious for hares因为吃了low-quality的high fiber food,所以造成出生率和生存率降低btw,原po下次可以把原文附上,可能会有比较多人回应喔:)