以下是一套完整的2020年12月英语四级真题：
Part I Writing
题目：
You are allowed 30 minutes to write a composition on the topic “Changes in the Way of Transportation”. You should write at least 120 words but no more than 180 words.
参考范文：
With the social and economic development, our means of transportation have changed a lot over the last few decades, which has brought much convenience to our life. In the 1970s and 1980s, bicycles were the primary means of public transportation. Families that owned a bicycle were thought to be in relatively good economic conditions. Because of the implementation of the reform and opening policy, the economy and people’s living standards were improved a lot and travelling by private cars became more and more common in 1990s and 2000s. And thanks to the information technology, we can now enjoy bike-sharing service and online ride-hailing service which help to make our journey more economical and flexible. We have enough reason to believe that our way of transportation could be more and more economically friendly and intelligent.
Part II Listening Comprehension
Section A
本部分包含三段新闻报道，每段报道后会有两到三个问题。以下是根据新闻报道所设计的问题及其答案：
Questions 1 and 2
（新闻报道内容关于地中海发现一种致命鱼类，该鱼类对当地生态构成威胁）
- A) Many people have been attacked by Devil Firefish. B) The Mediterranean is a natural habitat of Devil Firefish. C) Invasive species are driving away certain native species. D) A deadly fish has been spotted in the Mediterranean waters.
答案：D
- A) It could badly pollute the surrounding waters. B) It could pose a threat to other marine species. C) It could disrupt the food chains there. D) It could add to greenhouse emissions.
答案：B
Questions 3 and 4
（新闻报道内容关于巴黎市中心将限制汽车进入，以减少空气污染）
- A) Cars will not be allowed to enter the city. B) Pedestrians will have free access to the city. C) About half of its city center will be closed to cars. D) Buses will be the only vehicles allowed on its streets.
答案：C
- A) The unbearable traffic noise. B) The worsening global warming. C) The ever-growing cost of petrol. D) The rising air pollution in Paris.
答案：D
Questions 5 to 7
（新闻报道内容关于一个渔夫发现一颗巨大珍珠，但随后他的房子被烧毁）
- A) His house was burnt down in a fire. B) Many of his possessions were stolen. C) His good luck charm sank into the sea. D) His fishing boat got wrecked on a rock.
答案：A
- A) Change his fishing locations. B) Find a job in a travel agency. C) Spend a few nights on a small island. D) Sell the pearl he had kept for years.
答案：D
- A) His pearl could be displayed in a museum. B) His monstrous pearl was extremely valuable. C) The largest pearl in the world weighs 14 pounds. D) A New York museum has the world's biggest pearl.
答案：B
Section B
本部分包含两段长对话，每段对话后会有四个问题。由于对话内容较长且复杂，这里不再详细列出对话原文和问题，但可以提供问题的选项和答案供参考：
Questions 8 to 11（基于第一段长对话）
- A) It boasts a fairly long history. B) It has over 50 business partners. C) It has 75 offices around the world. D) It produces construction materials.
答案：A
- A) It was started by his father. B) It has about 50 employees. C) It is over 100 years old. D) It is a family business.
答案：D
（问题10和11的选项和答案略，因为需要完整的对话内容才能准确判断）
注意：由于篇幅限制，这里只列出了部分题目的选项和答案。在实际考试中，考生需要根据听到的对话或报道内容来选择合适的答案。
后续部分（选词填空、信息匹配、仔细阅读等）
由于篇幅原因，这里不再详细列出后续部分的具体题目和答案。但考生可以参考相关的英语四级真题资料来获取完整的试题和答案。
总的来说，2020年12月的英语四级真题涵盖了写作、听力理解、阅读理解等多个方面，旨在全面考察考生的英语综合运用能力。考生可以通过多做真题来熟悉考试题型和难度，提高自己的应试水平。
