Q: Is it wrong to use someone else's wireless(Wi-Fi) connection?Just recently,a man was arrested for doing just that.At that time,he was sitting in the street with a laptop and using an unsecured wireless connection to surf the Net.What do you think about this topic?Listen to the following different views on it. For a start,if someone is using your Internet service or downloading,this will affect your speed of access or download limit.Also,it's bad for Internet service providers.They will suffer in the long run because fewer people will pay for an Internet service if they know they can get it for free.And finally,just imagine this:what if the person who is stealing your Internet connection is involved in an illegal activity?I think the police are totally right to arrest these criminals. --by Sandra Wilkins Basically,if the person who paid for the service still has everything they paid for,what's the problem?It's just like using the light from streetlamps to read your book,or watching someone else's firework display.It's not stealing. Also,if you leave your wireless connection unsecured,then it is your own fault if someone else uses it.Just as you wouldn't leave your front door unlocked,or your car door open,neither should you leave your wireless connection open.By leaving your wireless connection open,you are inviting people to use it.Securing your wireless connection is as easy as clicking a few settings on your router .And finally,haven't the police got more important crimes to solve?They're always saying how they haven't got the manpower to solve real issues.But this is just ridiculous . --by James Hoarley In James Hoarley's opinion, _ . A) Internet service should be improved B) using others' Internet service is not stealing at all C) it is hard to secure one's wireless connection D) people should leave their wireless connection open
A: B

Q: Scientists have created a way to control a robot with signals from human brain.By generating the proper brainwaves--picked up by a cap with electrodes that sense the signals and reflect a person's instructions--scientists can instruct a humanoid robot to move to specific locations and pick up certain objects. The commands are limited to moving forward,picking up one of two objects and bringing it to one of two locations.The researchers have achieved 94 percent accuracy between the thought commands and the robot's movements. "This is really a proofofconcept demonstration," said Rajesh Rao,a researcher from the University of Washington who leads the project."It suggests that one day we might be able to use semiautonomous robots for such jobs as helping disabled people or performing routine tasks in a person's home." The person wearing the electrode cap watches the robot's movements on a computer screen through two cameras installed on and above the robot. When the robot's cameras see the objects that are to be picked up they pass on the information to the user's computer screen.Each object lights up randomly on the computer screen.When a person wants something picked up and it happens to light up,the brain registers surprise and sends this brain activity to the computer and then to the robot.The robot then proceeds to pick up the object. A similar algorithm is used to decide where the robot will go. "One of the important things about this demonstration is that we're using a 'noisy' brain signal to control the robot," Rao said."That means we can only obtain brain signals indirectly from sensors on the surface of the head,not where they are generated deep in the brain.As a result,the user can only generate highlevel commands such as indicating which object to pick up or which location to go to,and the robot needs to be autonomous enough to be able to execute such commands." In the future,the researchers hope to make the robots more adaptive to the environment by having them carry out more complex commands. What Rao said suggests that the new robot _ . A) is still at its early stage of development B) will be widely used in our daily routine soon C) is autonomous enough to complete complex commands D) is only limited to doing routine work at home
A: A

Q: My six-year-old granddaughter stares at me as if she is seeing me for the first time. "Grandma, you are an antique," she says. "You are old. Antiques are old. You are my antique." I am not satisfied to let the matter rest there. I explain, "An antique is not only just old; it's an object existing since or belonging to earlier times such as a work of art or a piece of furniture. Antiques are valuable." We look around the house for antiques. There is a large desk that was handed down from an aunt to our family. "It's very old," I tell Jenny. "I try to keep it polished, and I show it off whenever I can. You do that with antiques." When Jenny gets older and understands such things, I might also tell her that whenever I look at the desk or touch it, I am reminded of the aunt who was dear to me and gave me the desk as a gift. I see her face again, though she is no longer with us. I remember myself as a little girl standing against this antique, listening to one of her stories. Our tour of antiques continues. There is a picture on the wall purchased at a yard sale. It is dated 1867, and it is not in very good condition. There is a vase on the floor. I'm not certain where it came from, but I didn't buy it new. And then there is an old-style bed, sent to me forty years ago from an uncle who slept in it for fifty years. "The one thing about antiques," I explain to Jenny, "is that they usually have a story." For a moment Jenny looks thoughtful. "I don't have any antiques but you," she says. Then her face brightens. "Could I take you to school for our antiques show?" "Only if I fit into your backpack," I answer. And then her antique lifts her up and gives her a big hug that will last through the years. What do the picture and the vase have in common? A) Both came from the author's uncle. B) Both are still in good condition. C) Both were received as a gift. D) Both were bought old.
A: D