13
(A)The animals enjoy taking antibiotics and hormones so much.
(B)Several scientists believe that some cows’ nervous systems were stricken by a sheep disease called scrapie.
(C)These large doses accumulate in animal organs and are eaten by humans.
(D)They are indispensable for organic foods.

Farmers also often feed large amounts of antibiotics and hormones to their animals to make them stronger. 

(c)

These large doses accumulate in animal organs and are eaten by humans. 

This is harmful to us all because human diseases are becoming less responsive to antibiotics, and the hormones are not good for children.

These large doses accumulate in animal organs and are eaten by humans.

這些大量劑量累積在動物內臟，再被人類吃掉

dose n. 劑量

accumulated v. 累積；堆積

organ n. 器官；內臟；機構

Farmers also often feed large amounts of antibiotics抗生素 and hormones to their animals to make them stronger. 

13 This is harmful to us all because human diseases are becoming less responsive反應積極 to antibiotics, and the hormones are not good for children. 

indispensable翻譯：必不可少的，必需的。

scrapie翻譯：癢病（綿羊和山羊的一種嚴重腦病，通常可致死）。