金太阳联考（24-262C）：2024届高三朝阳市部分学校12月联考英语试卷及答案

刷题是提高学习成绩的有效方法，单位时间内的做题速度也对成绩有至关重要的作用。所以，刷卷子，根据卷子的时间要求做题更是一个很好的方法。因此，我为大家收集整理了高三各科的试卷题目及答案，供大家下载查看。

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Mesorits(石)an ofter clues atout what the eatly solr systun was ike.Bt findingthem is far from difficult.Now,some scientists are turning to drones(无人机)and machinelearning to help spot freshly fallen meteorites much more cffiaently."A team of six people ona metcorite hunting expedition can search about 200,000 square meters per day,"says SeamusAnderson,a planetary scientist in Australia.

Around 2016,Anderson began toying with the concept of using drones to take pictures ofthe ground to look for meteorites.That idea blossomed into a Ph.D.project.In 2022,he andhis colleagues reported their first successful recovery of a meteorite spotted with a drone.They've since found four more meteorites at a different site.Drone-based searches are muchfaster than the standard search way.“You re going from about 300 days of human effort downto about a dozen or so,”he says.

Anderson and his workmates have used drones to search for meteorites in remote parts ofWestern Australia and South Australia.The team is tipped off about a fall site by networks ofground-based cameras that track meteoroids flashing through the Earth's atmosphere.Theresearchers have to do a series of fun but difficult work before the hunt.They pack a fourwheel drive vehicle with drone and computer equipment,battery charging stations,generators,fuel,food,camping equipment,tables,chairs and much more.The drive to thefall site can take more than a day,often on rough or nonexistent roads.Anderson says,“Youhope you don't pop a tire.”

After arriving,the team flies its primary drone at an altitude of about 20 meters.Itscamera takes an image of the ground once every second,and the scientists download the dataevery 40 minutes or so when the drone lands to receive fresh batteries.A typical day of flyingcan net over 10,000 images,which are then divided digitally into 100 milion or so smallersections.Those “tiles”,each 2 meters on a side,are fed into a machine learning algorithm(算法)that has been trained to recognize meteorites based on images of real land rocks which arespray-painted black.

金太阳联考（24-262C）：2024届高三朝阳市部分学校12月联考英语试卷及答案

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