关于致癌物,很多人都听过这样的句式:“××不能吃,吃多了容易致癌。”能列入这个句式中的“致癌物”很多。此类科学知识,不能算错,但不完整。现在,科学家对有害物质的问题,要回答“对健康危害有多大,严重到什么程度。”剂量决定有害物质的毒性,但将有害物质浓度控制为零是一 With regard to carcinogens, many people have heard this sentence: “×× can not eat, eat too much easy to cause cancer.” Can be included in this sentence of “carcinogen ” a lot. Such scientific knowledge is not wrong, but it is incomplete. Now, scientists have to answer questions about harmful substances, “How big is the health hazard, and how severe it is.” Dose determines the toxicity of harmful substances, but controlling the concentration of harmful substances to zero is a