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　　为了帮助大家高效备考英语四级，今天小编为大家分享的是大学英语四级听力答案，希望对大家有所帮助，祝各位同学取得令人满意的成绩。和小编一起来看看吧！
　　一、听力练习
　　1.
　　A. 0.075 degrees Celsius.
　　B. 1.5 degrees Celsius.
　　C. 2 degrees Celsius.
　　D. about 1 degree Celsius.
　　2.
　　A. In 1981.
　　B. In 2010.
　　C. In 2015.
　　D. In 2016.
　　二、听力文本
　　Scientists reported this week that the world's oceans were warmer in 2019 than they had ever been before. Researchers say the rate of warming is speeding up and may cause a planet-wide disaster. Scientists are able to measure the rate of global warming when they compare current ocean water temperatures with those measured over the past few years. They found that the latest water temperature was 0.075 degrees Celsius higher than the average temperature from 1981 to 2010. The scientists pointed to the many extreme weather events of 2019 as one effect of warmer oceans. They added that warmer water also endangers some sea creatures and causes higher sea levels. The past five years are the five hottest years for the ocean since scientists began keeping records, the study found. In 2015, world leaders signed the Paris Agreement as part of efforts to limit climate change. The agreement took effect the following year. It aims to limit global temperature increases to "well below" 2 degrees Celsius, and to 1.5 degrees Celsius if at all possible. There has been about 1 degree Celsius of warming since the start of the Industrial Revolution 200 years ago. Yet the result of rising water temperatures is not evenly spread in the world's oceans. The report says that warmer temperatures are partly to blame for heavy rainfall in Indonesia and the drying of Australia, leading to wildfires in Australia and the Amazon.
　　Question 1: According to the news report, how many degrees Celsius has the world temperature gone up since the start of the Industrial Revolution 200 years ago?
　　Question 2: According to the news report, when did the Paris Agreement take effect?
　　三、重点词汇
　　1. Celsius: (of) a measurement of temperature on a standard in which 0° is the temperature at which water freezes, and 100° the temperature at which it boils 摄氏温度
　　2. endanger: to put someone or something at risk or in danger of being harmed, damaged, or destroyed 使处于险境；危及；危害
　　3. take effect: to produce or achieve the results you want 起作用；产生效果
　　四、背景知识
　　来自11个国内外机构的14名科学家联合发布新海洋观测数据，继2017、2021年海洋创纪录变暖之后，2021年成为有现代海洋观测记录以来海洋暖的一年。同时，过去五年是有现代观测记录以来海洋暖的五年，过去十年是暖的十年。发表在《大气科学进展》上的这项研究显示，2021年全球海洋上层2000米温度比1981-2010年的平均状态高了0.075℃。数据同时显示，1987-2021年期间，海洋平均增暖速率是1955-1986年的450%，显示出持续的海洋加速暖化趋势。从海表到2000米的深海、从大西洋到印度洋和太平洋、从北极到南极海域，均已观测到海水变暖。不断创纪录的全球海洋升温表明了无可辩驳的全球变暖事实。全球变暖主要是由于大气中的温室气体不断增加，而它们中的绝大多数被海洋吸收。2021年发布的IPCC海洋和冰冻圈特别报告表明，全球变暖导致的地球系统能量增加中，有90%以上储存在海洋中，使得海洋热含量增加。其余不到10%的能量用于加热陆地、大气，融化冰盖、冰川和海冰等。“目前，海洋吸收温室气体带来的能量正处于过渡态，可能在百年甚至千年尺度后才会达到平衡态。”成里京说。因此这些能量可能在千百年尺度上，不会被释放到大气中。（背景知识来自于https://baijiahao.baidu.com/s?id=1656405893891337563&wfr=spider&for=pc）
　　五、参考答案
　　Question 1: D
　　Question 2: D