大家都知道，英语四级听力是对学生听力水平的综合考核，在四级听力考试中，考生需要飞速准确地理解并回答各种语音材料的能力。为培养学生对英语语音、语调的敏锐度，新东方在线推荐了“2024年6月英语四级听力考试真题原文甄选（81）”，一块儿学习吧。
2024年6月英语四级听力考试真题原文甄选（81）
News Item 081-新型降落伞为着陆火星做筹备
After several weather related delays, the world’s largest helium balloonwas launched from a military base in Hawaii to test a saucer-likedevice called the Low-Density SupersonicDecelerator.
The LDSD is designed to investigate and test breakthrough technologies for landing robotic and human missions on
Mars, and safely returning large payloadto Earth. “This new technology is required to land five metric tons,
for human missions, maybe 30 and beyond, metric tons to the surface. So, the parachutewe’re using today can improve the performance of landing mass by 100 to 200 percent, and that’s really critical for not only future enhanced robotic missions, but human exploration of Mars.”
Scientists say the thin atmosphere around Mars requires especially strong parachutes for landing heavy and fast-moving spacecraft. “As we started thinking about the next generation of more capable, more exciting, more bold missions to Mars, we started realizing that we didn’t have the technologies in place to land them, and we had to start today, to start developing those technologies.”
The balloon tested Monday was 30 meters in diameter. A “flying saucer” it was carrying weighed more than 3,000 kilograms, about twice the weight of the kind of robotic roverspacecraft NASA can currently land on Mars.
Late Monday, a NASA spokeswoman said the test failed when the balloon deployed but did not inflate.
以上是新东方在线我们带来2024年6月英语四级听力考试真题原文甄选（81），期望考生们都能获得出色的成绩。
