单选题 You needn't introduce him to me

单选题22. William would rather he ______ finance instead of literature in the university, so that he could get a nice job.

单选题. Would a robot serving you coffee in bed make waking up easier on weekend mornings? Could a household robot help an elderly relative who is living alone? How would you like to climb into a robotic car and eat breakfast with kids while you're all driven to school and work? These scenarios(情况) may sound like science fiction, but experts say they're a lot closer to becoming a reality than you probably think. Brown University roboticist Chad Jenkins expects a near-term robot revolution that will echo the computing revolution of recent decades. And he says it will be driven by enabling robots to learn more like humans do—by watching others demonstrate behaviors and asking questions. "The robots you're seeing now mostly are analogous(相似的) to the mainframe computer of the 1970s," Jenkins says. "But you're starting to see things develop. The vacuum cleaners (真空吸尘器), the drones(无人机), those are the initial steps," he says, referring to iRobot Roomba vacuum cleaner, which has autonomously cleaned millions of homes since its 2002 debut(初次露面). "And these platforms are going to get cheaper while becoming more capable and more compact," he adds. And entrepreneurs like Dmitry Grishin, founder of a major Russian investment firm dedicated to personal robotics, have taken notice. He says the industry could be worth $18 billion. And to really transform, roboticists say, robots will have to evolve from machines that can perform only the tasks that they're programmed to do into automatons that can truly learn. That's because it's impossible to pre-program a robot for everything it will encounter in the ever-changing real world. "If you look at where robots are successful right now, it's primarily in applications where the environment is very controlled, like an assembly line where everything is the same, or in the hands of experts with PhDs, where we see them on Mars." says Chernova. "To really get them to handle the complexities of our real world," she says, "they are going to have to be customized on site. It's not going to happen tomorrow, but it's very close." Such a leap could help bring robots into the mainstream.1. According to this passage, a robot in the future can ______.

单选题1. No only did they brought snacks and drinks, but they also brought cards for entertainment.

单选题52. The boy listed several examples ______ his viewpoints.

单选题29. Tom told me that he was really rich and owned a Ferrari, but I ______ him at once.

单选题2. We should ______ our differences and discuss the things we have in common.

单选题 I don't like that fellow

单选题52. What worried people most was ______ to have access to the international current affairs freely.

单选题 I entered St

单选题 By the time you graduate

单选题 When Andrew was in South Africa

单选题 There seems to be an electrical problem

单选题 To their disappointment

单选题When you go to university to study for a degree

单选题 Aunt Sharon looks sleepy

单选题8. He spoke so quickly that I didn't ______ what he said.

单选题. Sometimes you'll hear people say that you can't love others until you love yourself. Sometimes you'll hear people say that you can't expect someone else to love you until you love yourself. Either way, you've got to love yourself first and this can be tricky. Sure we all know that we're the apple of our parents' eyes, and that our Grandmas think we're great talents and our Uncle Roberts think that we will go to the Olympics, but sometimes it's a lot harder to think such nice thoughts about ourselves. If you find that believing in yourself is a challenge, it is time you built a positive self-image and learnt to love yourself. Self-image is your own mind's picture of yourself. This image includes the way you look, the way you act, the way you talk and the way you think. Interestingly, our self-images are often quite different from the images others hold about us. Unfortunately, most of these images are more negative than they should be. Thus changing the way you think about yourself is the key to changing your self-image and your whole world. The best way to defeat a passive self-image is to step back and decide to stress your successes. That is, make a list if you need to, but write down all of the great things you do every day. Don't allow doubts to occur in it. It very well might be that you are experiencing a negative self-image because you can't move past one flaw or weakness that you see about yourself. Well, roll up your sleeves and make a change of it as your primary task. If you think you're silly because you aren't good at math, find a tutor. If you think you're weak because you can't run a mile, get to the track and practice. If you think you're dull because you don't wear the latest trends, buy a few new clothes. The best way to get rid of a negative self-image is to realize that your image is far from objective and to actively convince yourself of your positive qualities. Changing the way you think and working on those you need to improve will go a long way towards promoting a positive self-image. When you can pat yourself on the back, you'll know you're well on your way.1. You need to build a positive self-image when you ______.

单选题. Questions 9 to 12 are based on the first conversation.1.

单选题. Do you find it very difficult and painful to get up in the morning? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. During the hours when you labor through your work you may say that you're "hot". That's true. The time of a day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues as, "Get up, Peter! You'll be late for work again!" The possible explanation to the trouble is that Peter is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has. You can't change your energy cycle, but you can learn to make your life fit if better habit can help, Dr. Kleitman believes. Maybe you're sleepy in the evening but feel you must stay up late anyway. Counteract your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning, but you have an important thing to do early in the day, rise before your usual hour. This won't change your cycle, but you'll get up steam and work better at your low point. Get off to a slow start which saves your energy. Get up with a leisurely yawn and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save requiring more energy or concentration for your sharper hours.1. If a person finds getting up early a problem, most probably ______.