题目内容
Part 3: Reading Comprehension IDirections: There are four passages in this part. Each passage is followed by some questions. For each of them there are four choices marked A, B, C and D. You should decide on the best choice (2 mark each).ADear Colleagues,We are writing ahead of the coming norovirus season to ask for your help this winter, to reduce the spread of norovirus. We hope the following points will help you to advise your members about norovirus infection (感染) and its potential consequences. As you will know, norovirus typically causes vomiting (呕吐) and/or diarrhea (腹泻). It can spread rapidly in closed environments like schools. However, most people do not require treatment and recover at home within one or two days. Norovirus is easily spread from person to person and by consuming infected food or water or by contact with infected surfaces or objects. If a student or teacher develops symptoms of norovirus, please help to avoid further spread in school by reminding them or the parents of the students of the following points. People with symptoms of norovirus should: stay away from work or school until free of symptoms for at least 48 hours. drink plenty to replace lost water. If symptoms continue (more than 48 hours), phone the GP or NHS Direct 0845 46 47 for advice. wash hands thoroughly with soap and water regularly, particularly after toilet visits and before eating. Alcohol hand gel (洗手液) is not effective against norovirus. avoid visiting friends or relatives in hospital as there is a real risk of spreading the infection to others. stay at home, keep clean, particularly hand washing, and avoid contact with others where possible. do not handle or prepare food for other people until symptoms free for at least 48 hours. as you may know, the elderly and the very young can sometimes get a more severe infection, call the GP or NHS Direct 08454647 for advice.Information on norovirus infection is available on the Health Protection Agency website or by visiting www.hpa.org.uk/Topics/InfectiousDiseases/InfectionsAZ/Norovirus/.Thank you for your assistance.Yours faithfully,Dr. Virginia PearsonJOINT EXECUTIVE DIRECTOR OF PUBLIC HEALTH71. This letter is intended for _____ in schools.
查看答案
搜索结果不匹配？点我反馈
更多问题
People with norovirus symptoms should _____.
According to the passage, to get more information on norovirus, one can _____.
The main purpose of the passage is to _____.
Part 3: Reading Comprehension IIDirections: There are four passages in this part. Each passage is followed by some questions. For each of them there are four choices marked A, B, C and D. You should decide on the best choice (2 mark each).BMany of the jobs humans would like robots to perform, such as packing items in warehouses, or aiding soldiers on the front lines, aren’t yet possible because robots still don’t recognize and easily handle common objects. People generally have no trouble folding socks or picking up water glasses, because we’ve gone through “a big data collection process” called childhood, says Stefanie Tellex, a computer science professor at Brown University. For robots to do the same types of routine tasks, they also need access to tons of data on how to grasp and manipulate objects. Where does that data come from? Typically, it has come from painstaking programming. But ideally, robots could get some information from each other.That’s the theory behind Tellex’s “Million Object Challenge.” The goal is for research robots around the world to learn how to spot and handle simple items from bowls to bananas, upload their data to the Cloud, and allow other robots to analyze and use the information. Tellex’s lab in Providence, Rhode Island, has the air of a playful preschool. On the day I visit, a Baxter robot, an industrial machine, stands among oversized blocks, scanning a small hairbrush. It moves its right arm noisily back and forth above the object, taking multiple pictures with its camera and measuring depth with a sensor. Then, with its two-pronged gripper, it tries different grasps that might allow it to lift the brush. Once it has the object in the air, it shakes it to make sure the grasp is secure. If so, the robot has learned how to pick up one more thing.Tellex and her team have gathered and are now sharing data on roughly 200 items. Other scientists can contribute their robots’ own data, and Tellex hopes that together they will build up a library of information on how robots should handle a million different items. Eventually, robots facing a crowded shelf will be able to “identify the pen in front of them and pick it up.” Projects like this are possible because many research robots use the same standard framework for programming, known as ROS. Once one machine learns a given task, it can pass the data on to others—and those machines can upload feedback that will in turn refine the instructions given to subsequent machines. Such progress might seem incremental now, but in the next 5 to 10 years, we can expect to see “an explosion in the ability of robots,” says Saxena, now CEO of a startup company called Brain of Things. As more researchers contribute to and refine Cloud-based knowledge, he says, “robots should have access to all the information they need, at their fingertips.”75. To do some routine tasks, robots need to _____.
微信支付 
支付宝支付