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Tesla has made new progress in its humanoid robot, Optimus, and recently released a video that has attracted wide attention. The video, titled “Just a new PR in the lab,” highlights the robot’s latest abilities. Optimus is about 180 cm tall and weighs roughly 73 kg. Its hands are very skillful, with 11 points of movement, allowing it to perform detailed tasks. The robot is powered by a battery that can last for nearly a full workday. It uses very little energy, about as much as a few light bulbs, whether it is standing still or walking.

Earlier versions of Optimus could only walk slowly or handle objects in simple ways. In comparison, the new video shows much smoother and more stable movement, making its walk look closer to a human’s.

Elon Musk, the CEO of Tesla, has stated that Optimus is not just for show. The company has a clear goal: to use about 5,000 Optimus robots in its own factories by the end of 2025. By mid-2025, the robot was shown performing more complex jobs, such as walking longer distances on its own, lifting objects, and helping with basic factory assembly work. Although a version from September 2025 still seemed somewhat slow, a newer model in October could perform controlled martial-arts-style movements, showing much better full-body control.

Tesla says Optimus is still being developed but is almost ready for large-scale production. Once mass production begins, Mr. Musk estimates the robot could cost between $20,000 and $30,000. This would make it less expensive than many other industrial robots. In the long term, Musk imagines a future where robots might even help build other robots. The main idea is for them to take over repetitive or dangerous tasks in factories.

The development of Optimus is happening at an important time for the car industry. Electric cars and humanoid robots share key technologies like batteries and AI systems. Modern car factories already use many robots for jobs like welding and painting. Humanoid robots like Optimus could be the next step. They are designed to use tools, move around spaces built for humans, and do jobs that traditional robots cannot.

1.1. What allows the Optimus robot to do detailed work?

A Its strong arms.

B Its skillful hands.

C Its smart AI.

D Its light weight.

解析：选B。B细节理解题。第一段明确指出，是它“非常灵巧的手”（skillful hands）使其能够执行精细任务。故选B。

2.2.What can we infer from Musk’s statement?

A Optimus is just a showpiece.

B Optimus will be used in factories.

C Optimus can’t lift heavy things.

D Optimus stops developing now.

解析：选B。B推理判断题。第三段提到马斯克称Optimus“不只是用来展示的”，且特斯拉有明确目标“2025年底在自家工厂使用约5000台Optimus机器人”，由此可推断Optimus将投入工厂使用，B选项符合逻辑。A选项“只是展示品”与马斯克“不只是用来展示”的表述相悖；C选项“不能举重物”与原文“能举起重物”不符；D选项“停止研发”与机器人持续迭代的描述矛盾。干扰项与正确项均为关于Optimus应用状态的表述，性质一致。故选B。

3.3.What does the underlined word “This” refer to?

A The development process.

B The mass production plan.

C The AI system.

D A price estimate.

解析：选B。B词意指代题。根据第四段上下文可知，“This”指代前一句“Once mass production begins”（一旦大规模生产开始）这一具体前提条件，正是这个条件才能实现后文“降低成本”的结果，因此指代的是“大规模生产计划”。故选B。

4.4.Which word best describes the author’s overall tone toward the Optimus robot’s development in this article?

A Doubtful.

B Critical.

C Objective.

D Excited.

解析：选C。C推理判断题。全文以报道事实为主，如“视频显示进步”、“公司有明确目标”、“特斯拉表示”，并客观引述了马斯克的说法和行业背景，未加入明显的主观评价或情感色彩，因此整体语气是客观的。故选C。