Question 25 is based on the passage you have just heard.

听力原文

    An average person consumes 144 pints of milk a year, but 40% of that is poured onto cereal, and 60% of those people are children. But what was once advertised as nutritious is becoming unpopular. (22) [Americans drink 37% less milk than they did in the 1970s.] And in the UK, dairy consumption overall has fallen by a third in the past 20 years. (23) [Milk is increasingly being described in a negative light. A recent blog suggested: “Maybe people are drinking less milk because it is poisonous to many of us.”] Lactose is the sugar found in milk and dairy products. (24) [It needs a series of complex proteins to break it down. Without enough of these proteins, the lactose is broken down by bacteria in the human body. This can cause physical pain and produce gas in the stomach.] However, after we have finished breast or formula feeding, most of us don’t continue producing the complex proteins in our body, which are necessary to break down the lactose. Despite the problems in digesting milk, it does provide many benefits. (25) [Milk is nutritious. It contains vitamins A and D, as well as protein and isn’t full of calories.] You can test yourself by drinking a large glass of milk. If you get sick in your stomach within the next 24 hours, you are lacking the proteins to digest milk.

25. What does the passage say is a benefit of milk?（这篇文章提到牛奶的一个好处是什么？）

解析：B。录音中提到，牛奶很有营养，含有维生素A、维生素D和蛋白质，因此B项是对此内容的概括总结，为正确答案。

错项排除：录音中表示，然而，在结束母乳喂养或配方奶粉喂养后，大多数人体内都不会继续再产生分解乳糖所必需的复杂蛋白质。因此牛奶并不易被人体消化，A项错误。录音中并未将牛奶与其他动物制品相比较，C项错误。录音最后提到，牛奶热量不高，未提到它是否可以为人体提供充足能量，D项错误。