What is a possible negative effect of olestra according to some critics?A、It may increase the risk of cancer.
B、It may affect the overall fat intake.
C、It may impair the digestive system.
D、It may spoil the consumers* appetite.
【正确答案】：A
【题目解析】：题目问的是某些批评家指出食物油脂替代品的负作用是什么。根据第六段的最后一句话…that may reduce the risk of cancer, heart disease, etc.可知，会引发癌症、心脏病等等。因此选择A. It may increase the risk of cancer.（可能会提升患癌的风险）。