题型：选词填空（单句） 题类：模拟题 难易度：普通
上海市徐汇区2020届九年级上学期英语一模（期末）考试试卷
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A. including B. affected C. operates D. accurate E. tested |
Australia is home to crocodiles. Thanks to world-first drones(无人机), people are safer from crocodile attack.
The high-tech drones were near Queensland, along creeks, riverbeds, and beaches. They are trying to find out animals as they went.
There were five attacks in Queensland's touristic north between 2017 and 2018, two deadly attacks, and unusual sightings more than 40 kilometers inland.
The technology solution came from using newly developed shark-spotting drones to find out another kind of animals. As the pilot the drone, the video is monitored and a warning message is sent back to the pilot when it picks up on something dangerous below.
Designers say the finding is 93 percent , while human's eye is around 16 to 19 percent correct.
"A lot of time above crocodiles, a lot of images fed into the program as it's a learning program, which means it then gets better at spotting," the designer said.
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