单选题 Researchers say pizza-eaters are less ______ certain cancers according to a study showing that those who ate at least one pizza a week were 59% less likely to contract cancer of the oesophagus, and they ______ tomato sauce.
【正确答案】 B
【答案解析】[解析] 句意：研究表明，常吃比萨的人患某些癌症的几率更低，每周至少吃一个披萨的人患食管癌的可能性降低了59%，研究人员将这一现象归功于番茄酱。prone to有…倾向的。infect with感染(有传染性的疾病)。credit归因于；归功于。因此B选项正确。