单选题 It was reported that bacteria contaminated up to 80% of domestic retail raw chicken in the United States.

【正确答案】 C

【答案解析】 contaminate污染，弄脏；inflame激怒，使燃烧；inflict使遭受，造成；infect感染，传染；infiltrate使渗透，使潜入。根据句意，生鸡应该是感染了细菌，故选C。