在英语四级考试中，听力理解部分无疑是考生们需要重点关注的环节。小编为大家整理了“2024年12月英语四级真题听力第二套”Passage 1的内容，希望为大家备考带来帮助！
英文原文
Passage 1
文章1
Liftoff is usually the most environmentally harmful stage of any space mission, with vast quantities of fuel burnt up in a matter of minutes. For instance, SpaceX's Falcon 9 gets through 112 tons of refined fuel, emitting about 336 tons of CO2. This is the equivalent produced by your average car driving almost 70 times around the world. As well as greenhouse gases, rocket engines emit particles that destroy ozone.
发射通常是任何太空任务中对环境危害最大的阶段，在短短几分钟内就会燃烧掉大量燃料。例如，SpaceX的猎鹰9号消耗112吨精炼燃料，排放约336吨二氧化碳。这相当于一辆普通汽车绕地球行驶近70圈所产生的排放量。除了温室气体，火箭发动机还会排放破坏臭氧层的颗粒。
These issues are growing more pressing with the emergence of commercial space flight. There were 114 space launches in 2020, but there may be up to 1,000 per year in future.
随着商业太空飞行的出现，这些问题变得愈发紧迫。2020年有114次太空发射，但未来每年可能会有多达1000次。
Sustainable fuels are the top priority to enable greener space travel. Current spacecraft use a variety of fuels, but most are based on fossil fuels. One potentially greener option is liquid hydrogen and oxygen. Hydrogen can be obtained sustainably by using solar power to break water down into oxygen and hydrogen.
实现更环保的太空旅行，可持续燃料是首要任务。目前的航天器使用多种燃料，但大多数基于化石燃料。一个可能更环保的选择是液态氢和氧。通过使用太阳能将水分解成氧和氢，可以可持续地获取氢。
Reusable rockets can cut down on some of the waste associated with spaceflight. Traditionally, boosters, fuel tanks and other components are treated as expendable. But guiding them back to earth in a controlled manner opens new possibilities.Most components from the Falcon 9 can be reused up to 100 times.
可重复使用的火箭可以减少与太空飞行相关的一些浪费。传统上，助推器、燃料箱和其他部件被视为消耗品。但以可控的方式引导它们返回地球，开辟了新的可能性。猎鹰9号的大多数部件可以重复使用多达100次。
Truly environmentally friendly space travel is still some way off, but we already have many of the technologies needed to start limiting its impact on our planet.
真正环保的太空旅行仍有一段距离，但我们已经拥有许多限制其对地球影响所需的技术。
Questions 16 to 18 are based on the passage you have just heard.
问题16至18基于你刚刚听到的文章。
Question 16: What do we learn from the passage about the liftoff of spacecraft?
问题16：我们从文章中了解到关于航天器发射的什么信息？
Question 17: What happens traditionally to boosters, fuel tanks and other components in space flight?
问题17：在太空飞行中，助推器、燃料箱和其他部件传统上会发生什么？
Question 18: What does the passage say we already have regarding space flight?
问题18：文章提到我们在太空飞行方面已经拥有了什么？
2024年12月英语四级真题听力第二套Passage 1的发布，为考生提供了宝贵的备考资料，助力他们提升听力成绩，顺利通过考试。
