题目

癌症是全球范围内严重危害人类健康的疾病，人类生活中致癌因素主要有               中致癌因素的诱导，也有               因素的影响。 答案：环境        生物遗传Five passengers were _____ in the traffic accident and they have all been taken to the nearest hospital.      A.injured                    B.damaged                 C.destroyed                D.ruined