I just hope that our brains won’t crash(死机). Are you wo rking on your typing skills to make you a more efficient worker? That may be all for nothing as Intel believes that we’ll be able to control our computers with our brains by 2020.

       Intel and its resear ch partners are study ing how brain acts when it thinks. For example, scientists have found that people’s brains react in a similar manner when asked to think of a bear.

       Through sensors(感应器)that can find this sort of brain activity, Intel thinks that it will be able to read and translate this into an input system thanks to a c hip in the brain.

        “We’re trying to prove you can do interesting things with brain wav es. ”Intel research scientist Dean Pomerleau told Computerworld. “Eventually people may be willing to be, more devoted to brain implants(植入物). Imagine being able to surf the Web with the Power of your thoughts. ”

       Even if thin king about a bear isn’t enough to show that you want to copy and paste something. Intel still thinks that there’s a future in using your brain instead of the keyboard.

        “If we can get to the point where you can accurately find specific words, you could mentally type, ”he added. “You could compose characters or words by thinking about letters flashing on the screen or typing whole words rather than their individual characters. ”

       While this may all sound impractical for present time, Intel thinks that it’s possible and something we’ll all want.

        “I think human beings are unusually adaptive(适应的), ”said Andrew Chien, vice pre sident of research and director of future technologies research at Intel Labs. “If you told people 20 years ago that they would be carrying computers all the time, they would have said, ‘I don’t want that. I don’t need that. ’Now you can’t get them to stop carrying device s. There are a lot of things that have to be done first but I think implanting chips into human brains is well within the scope of possibility. ”

       Make good use of your favorite mouse and keyboard set-up before they’re old-fashioned.

    中共十九大报告指出：“建设现代化经济体系，必须把发展经济的着力点放在实体经济上，把提高供给体系质量作为主攻方向，显著增强我国经济质量优势。加快建设制造强国，加快发展先进制造业，推动互联网、大数据、人工智能和实体经济深度融合，在中高端消费、创新引领、绿色低碳、共享经济、现代供应链、人力资本服务等领域培育新增长点、形成新动能。支持传统产业优化升级，加快发展现代服务业，瞄准国际标准提高水平。促进我国产业迈向全球价值链中高端，培育若干世界级先进制造业集群。加强水利、铁路、公路、水运、航空、管道、电网、信息、物流等基础设施网络建设。坚持去产能、去库存、去杠杆、降成本、补短板，优化存量资源配置，扩大优质增量供给，实现供需动态平衡。激发和保护企业家精神，鼓励更多社会主体投身创新创业。建设知识型、技能型、创新型劳动者大军，弘扬劳模精神和工匠精神，营造劳动光荣的社会风尚和精益求精的敬业风气。”

    推动实体经济发展、不断提高质量、效益和竞争力是当务之急。近年来，我国实体经济“脱实向虚”倾向明显。受要素成本上升、资源环境约束趋紧和出口市场低迷等因素影响，一些传统产业发展遇到较大困难，行业利润率不断下滑，部分行业甚至面临全行业亏损的局面。与此同时，大量的社会资金流向股市、房地产等，以钱炒钱、赚快钱现象大量存在。实体经济“脱实向虚”，给我国经济的平稳健康发展带来威胁。

结合材料运用发展社会主义市场经济的知识，分析我国实体经济面临困境的原因，并说明使实体经济走出困境政府应如何作为。

分式$\frac{1}{x^2+3x}$与$\frac{1}{x^2-9}$的最简公分母是（　　）