主题1 关注科技创新-【金版新学案】2024高考英语大二轮专题复习与测试（新教材）

热点主题语境练 主题一　关注科技创新 (本栏目内容，在学生用书中以独立形式分册装订！) 情景1　创新性研究探索 Ⅰ.阅读理解 A Living robots can reproduce on their own in a dish.This is not a sci-fi movie，but the result of a new research. Xenobots，a type of tiny robot，were first created in 2020，using cells taken from the embryo(胚胎) of an African frog species.Under the right lab conditions，the cells formed small structures that could self-assemble，move in groups and react to their environment.Now，the researchers have found that Xenobots can also self-replicate (自动复制)，according to the journal of New Scientist. Xenobots straddle an unusual line．Are they living organisms or robots？They are organisms because they are made of stem cells and can reproduce.They are also robots because they can move on their own and perform physical labor，co-author Sam Kriegman told The Washington Post. “People have thought for quite a long time that we've worked out all the ways that life can reproduce or replicate.But this is something that's never been observed before，”co-author Douglas Blackiston，a senior scientist at Tufts University in the US，told Science Daily. The ability to replicate adds a new layer of potential utility to the robots.Kriegman told The Washington Post that while Xenobots are not yet commercially useful，they have the potential to provide a number of services，from cleaning up microplastics in the ocean to safely delivering drugs to a specific spot in a person's body. However，the creation of Xenobots comes with concerns.Some think more advanced future Xenobots，especially ones that live longer and reproduce，could outcompete other species，according to The Conversation，an Australian news media. The researchers think these risks are manageable.“If you change the amount of sodium(钠) in that water to be too high or too low，they'll die，”Kriegman told The Washington Post.“If there's a piece of copper in the dish，they'll all die.It's an extremely controllable，stoppable and safe system.” 语篇解读　本文是一篇说明文。文章主要介绍了异种机器人能够自我组合、成群活动、对环境做出反应，而且还能