2020年12月英语四级听力真题第2套-短文3

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一、听力试题

Questions 22 to 25 are based on the passage you have just heard

22.A) They prefer to drink low-fat milk.

B) They think milk is good for health.

C)They consume less milk these days.

D)They buy more milk than the British.

23.A) It is not as healthy as once thought.

B) It is not easy to stay fresh for long.

C)It benefits the elderly more.

D)It tends to make people fat.

24.A) They drink too many pints every day.

B) They are sensitive to certain minerals.

C)They lack the necessary proteins to digest it.

D)They have eaten f ood incompatible with milk.

25.A）It is easier for sick people to digest.

B） It provides some necessary nutrients.

C)It is healthier than other animal products.

D)It supplies the body with enough calories.

二、听力原文

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文字版：

　　[22] An average person consumes 144 pints of milk a year, but 40% of that is poured on the cereal and 60% of those people are children. But what was once advertised as nutrition is becoming unpopular. Americans drinks 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 that maybe people are drinking less milk because it is poisonous to many of us. Lactose is the sugar found in milk in dairy products. it needs a series of complex proteins to break it down. Without enough of these proteins, [24]the lactose is broken down by bacteria in a human body. This can cause physical pain and produce gas in the stomach. However, after we have finished breast and formula feeding, most of us don't continue producing the complex proteins in our bodies, which are necessary to break down the lactose. Despite the problems that I just see in 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 24hrs, you are lack in the proteins to digest milk.

　　Question 22 to 25 are based on the passage you have heard.

　　22 what does the passage say about Americans?

　　23 how do Americans and British think of milk nowadays?

　　24 why does drinking milk cause pain in some people?

　　25. What does the passage say is a benefit of milk?

三、答案解析

22、C)细节辨认题． 短文中给出的数据说明，与20世纪70年代相比，美国人的牛奶饮用量减少了37%。

23、A)细节推断题。短文中提到，不光是美国，英国的牛奶饮用量在过去20年间也减少了三分之一．提到牛奶时，负面评价越来越多． 最近，还有人在搏客上说，对许多人来说，牛奶是有毒的． 由此推断，牛奶曾经的正面形象已经发生了变化，人们不再像以前那样认为饮用牛奶一定有益健康．

24、C)目的原因题． 短文中说 吃牛奶中所含的乳糖需要特殊的蛋白质来进行消化。如果体内此类蛋白质不足，乳糖就会被人体中的细菌分解，从而引起身体疼痛和胃胀气．

25、B)细节辨认题． 短文末尾指出，牛奶是很有营养的，富含维生素A和维生素D，还含有蛋白质，而且热量不高。