文章大意：这是一篇说明文。文章主要说明了科学家们长期以来一直在努力解决这个问题，即哪些基因标记表明寿命短或长，研究小组的这一发现可能会加快基因和人类寿命研究的步伐。
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Genes play a critical role in overall health. Every cell in the human body contains genetic information. Everything from the ageing process to the development of 1 , such as cancer, is tied to an individual’s genetic make-up. However, scientists have long been 2 the question about which genetic markers indicate a short or long lifespan. The discovery by the research team may 3 of the study on genes and human lifespans, and eventually help answer this question.
Scientists say that locating these sixteen genetic markers will greatly improve their understanding of how genes affect lifespans. These genetic markers may eventually 4 a means of targeting the specific genes connected with lifespans. This could significantly enhance people’s chances of living to a ripe old age. According to some scientists, it could make 5 to the future of human life.
At the basic level, artificial intelligence is a branch of computer science that aims to create intelligent machines. One of 6 of AI is to develop computer intelligence 7 learning from experience, 8 new inputs and performing tasks like humans. To achieve this aim, many approaches to creating true AI have been put forward, including “deep learning”, which enables a machine to improve its own performance by learning from the results of 9 . Deep-learning AI 10 to analyse massive amounts of data through multiple layers, imitating the complex networks of the human brain.
