Question 22 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.

22. What does the passage say about Americans? （关于美国人，这篇文章说了什么？）

解析：C。此题可用到视听一致和同义替换。录音中提到，与上世纪70年代相比，美国人的牛奶饮用量减少了37%。因此C项符合题意，其中less milk为原词复现，关键词consume对应录音中的drink，为正确答案。

错项排除：录音中并没有提到低脂牛奶，排除A项。录音中提到人们曾经因为牛奶营养丰富而对其进行广泛宣传，但现在人们喝的牛奶少了，并且越来越多地从负面角度来形容牛奶，B项与此内容相悖，故排除。录音中提到，与上世纪70年代相比，美国人的牛奶饮用量减少了37%。而在英国，乳制品的总消耗量在过去20年里下降了三分之一，并没有对比英国人和美国人谁买的牛奶更多，D项错误。