[学科网]2025届高三4月大联考生物(新课标卷)试题

2025-04-15 00:00:00 试题答案 4℃ 0

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本文从以下几个角度介绍。

[学科网]2025届高三4月大联考地理(新课标卷)试题

[学科网]2025届高三4月大联考生物(新课标卷)试题

31．Where can we probably read the passage
A．A news report. B．A research paper. C．A travel leaflet. D．A nature magazine.
Google’s DeepMind can control a robotic arm to beat ordinary table tennis players, according to a new study. But Fan Zhendong, the 2024 gold medalist for individual and team men’s table tennis, can rest easy: The AI-powered robot could only beat players at a medium level, and only on certain occasions, which was published but has not been reviewed by experts in this field.
Robots can now cook and clean, but they struggle to quickly respond to real-world environmental information. Achieving human-level performance in terms of accuracy (准确性), speed and generality still remains a great challenge in many fields.
To overcome this limitation, the researchers combined an industrial robot arm with a customized version of DeepMind’s powerful learning algorithms (算法). DeepMind uses neural networks to gradually learn new information. The system was also trained to master specific aspects of the game — for example, the rules, the techniques of playing — with real-world and simulated (模拟的) data in algorithms.
As the AI learned, the researchers collected data on its strengths, weaknesses and limitations. Then, they fed this information back to the AI program, thus giving DeepMind a realistic impression of its abilities. The system picked which skills or plans to use in the moment, considering its competitors’ strengths and weaknesses, just like a human table-tennis player might. Most of the human players seemed to like playing against the system. They agreed that playing with the robot was fun and attractive.
The new approach could be useful for a wide range of applications that call for quick responses in changing physical environments, as the researchers said.

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3．C
4．C
5．D
B、由题意可知三小球构成一个等边三角形，小球1和3之间的力大于小球2和3之间的力，弹簧处于压缩状态，故小球1和3一定是斥力，小球1带正电，故小球3带正电，小球3运动至a点时，弹簧的伸长量等于，根据对称性可知，小球2对小球3做功为0；弹簧弹力做功为0，故根据动能定理有
解得
故B错误；
AC、小球3在b点时，设小球3的电荷量为q，有

[学科网]2025届高三4月大联考化学(新课标卷)答案

第1章　第3节　第1课时　物质的量　摩尔质量（课件学案练习共3份）鲁科版（2019）必修第一册

湖北省楚天协作体2024-2025高二下学期4月期中生物试题（答案）