[問題]GWD 27-Q35

[bonus]

Q35:
In polluted environments, dolphins gradually accumulated toxins in their body fat, and the larger the dolphin the more accumulated toxin it can tolerate. Nearly 80 percent of the toxins a female dolphin has accumulated pass into the fat-rich milk her nursing calf ingests. Therefore, the unusually high mortality rate among dolphin calves in the industrially contaminated waters along Florida’s Gulf Coast is probably the result of their being poisoned by their mother’s milk.

Which of the following, if true, most strengthens the argument?

A. The survival rate of firstborn dolphin calves in the area along Florida’s Gulf Coast is highest for those whose mothers were killed before they were weaned.
B. The rate at which adult dolphins living in the waters along Florida’s Gulf Coast accumulate toxins is no higher than that of adult dolphins in comparably polluted waters elsewhere.
C. Among dolphin calves born in the area along Florida’s Gulf Coast, the mortality rate is highest among those with living siblings.
D. As dolphins age, they accumulate toxins from the environment more slowly than when they were young.
E. Dolphins, like other marine mammals, have a higher proportion of body fat than do most land mammals.

Answer: A

[bonus]

A如果母海豚斷奶之前就死掉， 它的孩子存活率高。

[dianechiu]

想請問如果(D)選項改成反向
隨著海豚年齡增長,對毒素吸收較幼年時期為快
可以當作一個support的選項嗎?
(排除幼海豚自行吸收外界毒素的可能...)
謝謝

[dibert8]

也許喔!

[小花]

C. Among dolphin calves born in the area along Florida’s Gulf Coast, the mortality rate is highest among those with living siblings.

. 想請教一下with living siblings是什麼意思?

我查字典

siblings:
Your siblings are your brothers and sisters.

[ganbade]

我想C選項是說
那些有兄弟姊妹們的小海豚死亡率較高.
既然庸地姊妹可存活, 也就排除“母奶中的毒素“是造成“小海豚死亡“的因素了

參考看看ㄅ