We learn from the passage that olestra is a substance that ___________.A、contains plenty of nutrients
B、makes foods easily digestible
C、makes foods fat-free while keeping them delicious
D、renders foods calorie-free while retaining their vitamins
【正确答案】：C
【题目解析】：题目问的是从文章中我们能得知食物油脂替代品是一种什么物质。根据第一段的第一句话Imagine eating everything delicious you want—with none of the fat.可知，食物油脂替代品就是能够实现这种想法的物质，使食物好吃但是又不含脂肪，因此选择C. makes foods fat-free while keeping them delicious（使食物好吃但是又不含脂肪）。