答:初中《生理卫生》教材第85页上说“肠液和胰液里含有多种能消化糖类、蛋白质、脂肪的消化酶,胆汁里不含消化酶,但是能促进脂肪的消化。”胆汁里不含消化酶,为什么能促进脂肪的消化呢?要回答这个问题,首先要掌握胆汁的成分和作用。胆汁中不含消化酶,但含有与消化有关的胆盐、胆固醇、脂肪酸和卵磷脂等。胆 A: The textbook on hygiene in junior high school on page 85 says “There are many kinds of digestive enzymes in intestine and pancreatic juice that can digest sugars, proteins and fats. There are no digestive enzymes in the bile, but they can promote the digestion of fats.” Containing digestive enzymes, why can promote the digestion of fat? To answer this question, we must first master the composition and role of bile. Bile does not contain digestive enzymes, but digestive and related bile salts, cholesterol, fatty acids and lecithin. Guts