2020年9月英语四级听力真题原文及答案：听力篇章（三）

全国大学英语四级听力理解部分由短篇新闻、长对话和听力篇章构成。试题采用选择题（单选题）题型。听力理解部分的分值比例为35%，其中短篇新闻占7%，长对话占8%，听力篇章占20%。考试时间约25分钟。2020年上半年第二次全国大学英语四级考试将在9月19日举行，希赛网英语四六级频道将会第一时间为大家搜集整理2020年9月英语四级真题听力及参考答案（听力篇章）。大家可以先参考2019年下半年的四级听力真题（听力篇章）。请大家收藏此页面，小编将在考后为大家更新此页面。

Section C

Passage 3 人体肌肉酸痛的原因、恢复与缓解

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? [22] 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. [23] 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 [24] about two days, and afterwards the soreness disappears. Unfortunately, there is little that can be done to relieve muscle soreness. Pain relieving creams don’t work, but [25] 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?

D) It comes from straining one’s muscles in an unusual way.

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

A) Blood flow and body heat increase in the affected area.

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

B) About two days.

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

C) Have a hot shower.