题目内容

A.While the smartphone revolution has made our lives easy, it has also made us lazy.B. In this article, we are going to look at some of the latest feats in technology and analyze their. positive and negative impact on our lives.C. Driverless cars are yet another example of AI and robotics.D. While the concept of Robotics and AI sounds exciting, it is not without flaws.E. The advent of smartphones has simplified our lives immensely.Over the last 2 to 3 decades, technology has become more and more a part of our daily lives, to the point where it has taken over our lives. Take a moment, stop reading this article and look around you. What do you notice? Do you see tech, gadgets, computers, video monitoring?Notice how our lives are surrounded by gadgets and tech appliances. The PC at your desk, the cell phone next to your bed, the Wifi router, even your thermostat – all these are examples of how technology has transformed every aspect of our lives; some for the good and others may not be so good.___1___Positive Impact of Technology on SocietySmartphone RevolutionIt was just over a decade ago when cell phones were primarily used for calling and sending texts. Today, the uses of cell phones run the gamut. Phones do everything from taking high-resolution pictures to watching pixel-perfect videos, browsing the internet to playing graphic-intensive games to monitoring your movements. It’s astonishing at how this small device can handle demanding tasks in addition to fulfilling basic communication needs.___2___ People now connect with their loved ones more frequently and easily through video calls and instant messaging services. Tasks, like creating slides, reading emails, and creating documents don’t require a PC anymore.In a nutshell, smartphone and apps have changed the way we work, communicate and play. In addition, the booming expansion of e-commerce and internet-based companies is directly proportional to the rapid proliferation of smartphones.Negative Impact of Technology on SocietyLess-Active Lifestyle___3___ Today, the whole world is at our fingertips, and thus we don’t have to work or move around like we did previously to get things done.Our sedentary lifestyle and lack of physical activities can be partly attributed to the over-dependence on smartphones. This is especially true for the younger generation, who are constantly glued to their cell phones. In the modern era, cell phone addiction is having a negative impact on our lives. Care needs to be taken to deal with this issue in an effective way.Robotics and Artificial IntelligenceThe advancements made by the scientific and engineering community has turned Artificial Intelligence (AI) and robotics from science fiction to reality. Though we don’t have human-like robots like those depicted in movies, intelligent machines are now a part of our daily lives.Think about advanced drones that are capable of surveillance, tracking, and offensive measures- aren’t such machines highly-intelligent robots? What about automated assembly lines in industrial plants that can handle the manufacturing and packaging of goods on its own?Sophisticated machines that are capable of working with minimal human intervention are sophisticated robots too. ___4___ With tech giants like Google, Tesla, and BMW involved in the production of driverless cars, it looks like we are going to see self-driving cars sooner than we may have expected.___5___ Many people believe that the implementation of robotics and AI will lead to mass layoffs and unemployment. We have already seen how factory workers lost their jobs when automated assembly lines were introduced. Now, with driverless cars, intelligent chatbots, and more knocking at the door, it may turn out that drivers and customer support agents are going to have a hard time keeping their jobs.

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根据原函数的定义,求原函数实质是

A. 求导数
B. 求导的逆推
C. 与求导无关
D. 求微分

如果一个函数存在原函数,则其原函数是

A. 唯一的
B. 不唯一的
C. 不同的原函数间之相差常数C

Virtual-reality (VR) headsets are now being used in many industries as a way of training people or providing a new way to experience things.Theater audiences can already enjoy 3D movies, and with apps users can be even more deeply___1___in their movie experiences. They can watch movies on a huge virtual screen, something like their own___2___theater, or even watch as if they were inside the movie itself,___3___by the imagery and sound effects. And if you are a sports fan, a virtual-reality platform company has built a virtual stadium so you can have the___4___of game day experiences with your friends, right from the comfort of your couch.The health care___5___has been a big adopter of virtual-reality tech, with some institutions using the computer-generated images fordiagnosisand___6___.The virtual models help both new and experienced___7___determine the safest and most___8___way to locate tumors, place surgical incisions or practice difficult procedures ahead of time.Besides, virtual reality could add a lot of culture to our lives. A number of museums have already___9___with developers to create virtual spaces where people can___10___the museums’ physical collections.

频率计算中配线法的实质是认为样本的经验分布与其总体分布相一致。

A. 对
B. 错

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