广西2025届高三8月联考(25-19C) 英语试卷答案,我们目前收集并整理关于广西2025届高三8月联考(25-19C) 英语得系列试题及其答案，更多试题答案请关注本网站
广西2025届高三8月联考(25-19C) 英语试卷答案
以下是该试卷的部分内容或者是答案亦或者啥也没有，更多试题答案请关注本网站
意
2.选择题部分必须使用2B铅笔填涂：非选择题部分必须使用黑色
填涂左边缺考标记。
字迹的钢笔或签字笔书写，字体工整、笔迹清楚。
正确填涂
项
3.请按照题号顺序在各题目的答题区域内作答，超出答题区域书写
D
It’s in the dirt on the ground, the debris (碎片) on your roof, and the dust that tickles your nose — tiny pieces of “cosmic dust”, everywhere. These microscopic particles from outer space are micrometeorites (微陨石) — mostly the debris from comets and asteroids (小行星) — and they have settled all over our planet.
Once the particles settle to the ground, they can be found anywhere; they could be sitting on your clothes right now. But despite their widespread presence, finding cosmic dust isn’t easy. One place that the particles show up more easily is Antarctica. Around a decade ago, Mattew Genge at Imperial College London spent seven weeks searching for and collecting dust there.
The downside to collecting dust from Antarctica is the cost and complications of travelling there. That’s why Penny Wozniakiewicz of the University of Kent in the UK has focused her research closer to home. The key is to collect materials from a fairly undisturbed spot. For instance, she samples on the rooftops of old cathedrals in the UK.
She focuses on these roofs because they are old and more untouched than modern buildings. What’s more, historic buildings like cathedrals usually have well-kept records that indicate when maintenance and cleaning have been done. That makes it easier to determine how long cosmic dust has been collecting and gives researchers insight into what other particles might be present in the dust they collect. This allows them to more efficiently remove the Earth stuff, and focus on the space stuff.
Each year, approximately 100 billion particles of space dust land on Earth, carrying secrets from asteroids and offering glimpses into the formation of galaxies. These micrometeorites not only contain water but also organic molecules (分子); they potentially serve as the building blocks for life on Earth. Cosmic dust could, therefore, tell scientists about the intricate (错综复杂的) relationship between these celestial bodies and Earth. It acts as a bridge, connecting us to the wider universe.
12. Which of the following statements is true about cosmic dust
郑重声明：本文版权归原作者所有，转载文章仅为传播更多信息之目的，如作者信息标记有误，请第一时间联系我们修改或删除，多谢。
