单选题 How has science done a disservice to mankind?

A、 Because of science, most of the foods we eat today are contaminated.
B、 It has caused a lack of information concerning the value of food.
C、 As a result of scientific intervention, some potentially harmful substances have been added to our food.
D、 The scientists have preserved the color of meats, but not of vegetables.

【正确答案】 C

【答案解析】[精解] 题干意为“科技为人类带来了怎样的伤害?”该题为主旨题。通读全文，可以看出作者通过食品中的添加剂、加工食品时所用的化学药品以及一些用于牲畜的催肥剂等阐述了科学在食物转化的过程中起的副作用。