第2题: [单项选择]Olestra is different from ordinary fats in that ______. A. it passes through the intestines without being absorbed B. it facilitates the absorption of vitamins by the body C. it helps reduce the incidence of heart disease D. it prevents excessive intake of vitamins 参考答案:A 答案解析:Olestra不同于一般的脂肪。它由六到八个脂肪酸分子组成,体积太大,肠胃无法吸收;它可以穿过肠胃而不被分解(参见第六段)。