2019年12月大学英语四级真题答案卷一卷二卷三完整版出炉 2019年大学英语四级答案解析（2）

Passage 3

After tough workout or a day full of physical activity, it’s common to find your muscles aching, but where do these pains come from? According to a German professor, the soreness comes from straining your muscles in an uncommon way, for example, jumping on a bicycle for a ride, because you haven’t ridden in a long time. Soreness occurs since your leg muscles aren't used to that movement. When muscles perform an activity they aren’t regularly expose to, the tiny fibers that are inside them are being torn apart. As muscle soreness develops, the body has to work to repair the muscle tears, but this doesn’t happen immediately. First, the body must realize the muscles are damaged. When the body realizes the muscles are hurt, the response is to increase blood flow to the area and increase body heat, damaged cells are then cleaned up and the body sends cells specially designed to break down the large muscle fiber fragments. Healing can take place after this. It takes about a day until these cells make it to your aching muscles. That’s why there is most often a delay associated with muscle soreness. Repair of damaged cells takes about two days, and afterwards the soreness disappears. Unfortunately, there is little that can be down to relieve muscle soreness. Pain relieving creams don’t work, but a hot shower, or warm bath can provide some relief.

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

22. What does the German professor say about muscle soreness?

23. What happens when muscles are damaged according to the passage?

24. How long does it take for damaged cells to heal?

25. What does the speaker suggest one do to relieve muscle soreness?

22. C, it happens when people engage in an uncommon activity

23. D, blood flow and body heat increase in the affected area

24. A, about two days

25. B, have a hot shower

试卷一的答案

第一篇: univer sity:

Dear Alex,

On hearing that you are planning to study in China, I decide to write you a letter to recommend a university to you. My recommendation is Hunan University, which is one of the most outstanding universities in China

The reasons why I recommend this university can be listed as follows. First of all, Changsha, where Hunan University is located, is such a fantastic city that it owns many amazing museums in which you can explore the mystery and prosperity of ancient China. Furthermore, you can eat a lot of famous traditional Chinese food and snacks, which Changsha is famous for. Most important of all, Hunan University has a high reputation for its academic contributions to the world and the campus is just beautiful.

I truly hope that you can come to Hunan University to start your college life and I'm p looking forward to your arrival. If you have any questions about the university or the city I mentioned above, please feel free to contact me for further information.

Yours sincerely,

选词填空(第一套):

26: B admiring

27: M sealed

28: I natural

29: C contains

30: K released

31: L revealing

32:0

substance

33: G liquid

34: evidence

35: potential

卷一:信息匹配

36:E段落第一句: USPS has sophisticated emergenc

37:Ⅰ段落第一句: Mail companies are logistics

38:C段落第一句: As global surface temperatures in

39∶G段落第一句: Every day, USPS processes, on a

40:K段落第一句: Rebuilding can take a long time

41:F段落第一句: As soon as it' s safe enough to b

42:B段落第一句: Even the united states postal

3:J段落第一句: Private courier companies, wh

44:D段落第一句: Days after the deadly2017 wild

仔细阅读(第一套):

卷一:仔细阅读

46-50:AI助手

46: B It is a course designed for students to learn online.

47: CStudents'questions were unsatisfied weith the assistants 48: A She turned out to be a great success

49: D They could not tell her from a real person

50: Assign her to answer more of students'questions而pss笑而过

5551-55:科学筹款

51: C Not all of them achieved their anticipated goals

pas 52: B To identify reasons for their different outcomes而过53: Its interaction with prospective donors

54: A They should be small to be successful

55: D Thcir fccling of conncction to the scientists themsclves

翻译：

中国的家庭观念与其文化传统有关。和睦的大家庭曾非常令人羡慕。过去四代同堂并不少见。由于这个传统,许多年轻人婚后继续与父母同住。今天,这个传统正在改变,随着住房条件的改善,越来越多年轻夫妇选择与父母分开住。但他们之间的联系仍然很密切。许多老年人仍然帮着照看孙辈。年轻夫妇也抽时间探望父母,特别是在春节和中秋节等重要节日。

The Chinese family ideas are related with her cultural traditions. harmonious extended families(big families) used to be very admirable, and it was not uncommon for four generations to liveunder the same roof. With this convention many young couples would continue to live with theparents. However, this practice is changing. With the improvement of the housing condition, more couples choose to live away from the parents but they still have close relations。Many elderly people help take care of their grandchildren and their children spare time to visit them, esp on important occasions like the Spring Festival and the Mid-Autumn Festival.