第32题: [单项选择]Which of the following can not be referred to as natural food A. Vegetables and fruits with essential vitamins and minerals. B. Foods grown in soil rich in organic matter. C. Poultry fed in free pastures. D. chickens raised on battery farms. 参考答案:D 答案解析:本段落倒数第四行“Or perhaps—again not provable—by magnifying and extending irrational personal conflicts bas