人们对于患癌症有不可抑制的恐惧心理,中毒控制中心经常接受某种物质引致癌症可能性及接触后自身是否会患癌的咨询。下面的对话是虚拟的,但每个片断基本都是真实的。整理出这段对话的目的在于说明:1.环境致癌因素是肿瘤发病病因中唯一可以预防的;2.这些因素可以致癌,但是有条件的;3.环境致癌因素并非碰不得的妖魔,没有必要也不可能零接触;4.解释几个特殊专用名词。 People have irrepressible fears of cancer. Poison control centers often accept the possibility of a substance causing cancer and counseling about whether or not it will develop cancer after exposure. The following conversation is virtual, but each fragment is basically true. The purpose of arranging this dialogue is to illustrate: 1. The environmental carcinogenic factor is the only preventable cause of the etiology of the tumor; 2. These factors can cause cancer, but conditional; 3. Environmental carcinogenic factors are not untouchable demons, not necessary It is also impossible to touch zero; 4. Explain several special terms.