1 . Imagine a world where you move around in front of a personal computer in your own sound space. You listen to your favorite songs, play loud computer games or watch a movie — all without other people hearing the sound and without headphones.
That is the possibility presented by “sound beaming”, a new technology from Noveto Systems, an Israeli company. On Friday, the company introduced a desktop device that sends sound directly to a listener without the need for headphones or a special receiver.
Noveto Systems gave The Associated Press (AP) a chance to test its SoundBeamer 1.0 before its introduction. The AP’s Louise Dixon writes that listening to the device is like something from a science fiction movie.The sound seems so close that it feels like it is inside your ears while also in front, above and behind them.
Noveto expects the device will have many uses. Office workers could listen to music or conference calls without others hearing. People could play a game, a movie or music without waking up others in the same room. Because the device does not use headphones, it is possible to hear other sounds in the room clearly.
The device uses a 3-D sensing module that finds and follows the ear position of the listener. It sends ultrasonic waves (超声波) to create sound pockets by the user’s ears. The 3-D method creates sound on all sides of the listener, therefore the listeners feel completely transported into the scene.
By changing a setting, the sound can follow a listener around when he moves his head. It is also possible to move out of the sound beam's path and hear nothing at all.
While the idea of sound beaming is not new, Noveto was the first to launch the technology.
According to the chief executive officer Christophe Ramstein, a “smaller” version of the device will be ready for release to consumers next year.
1. What does the underlined word “possibility” in Paragraph 2 refer to?| A．The listener may put on music to block out other sounds. |
| B．The listener may hear sound only for him or her without using headphones. |
| C．The listener may enjoy songs or movies without being interrupted by others. |
| D．The listener may have the ability to pick up some special sounds. |
| A．Amazing. | B．Impossible. |
| C．Strange. | D．Meaningful. |
| A．It places the listener on the scene to hear the sound. |
| B．It fixes a sound beam’s path which can not be changed. |
| C．It follows the listeners around to send and receive sounds. |
| D．With 3-D tracking technology, it sends ultrasonic waves to the target listener. |
| A．To promote the SoundBeamer. | B．To introduce a new sound device. |
| C．To recommend new headphones. | D．To explain a technical phenomenon. |
2 . The first time I used the TV to distract my daughter, I felt like a bad parent; I convinced myself I was a “bad” mom-these days I believe the opposite to be true. Screen time makes me a better mom.
Now I know what most of you might be thinking: That's ridiculous. Only irresponsible parents rely on the screen to care for their kids. Then again, experts suggest parents limit media use. And while I am not sceptical about experts, there are things they fail to consider.
Like most 6-year-olds, my daughter gets worked up and excited easily and watching a cartoon gives her a chance to shut off her mind. And there are other reasons-more selfish reasons. I am a work-from-work mom, and giving her screen time gives me “me” time. I'm able to write while she watches TV. And while this may sound bad. I believe I am helping my daughter realize she should rely on herself. When Mommy works, she gets her own snacks, drinks and toys.
There are other benefits, too. TV has also taught my daughter. Thanks to “Super Why”, she knew her alphabet at 2, and thanks to “Sesame Street”, she was able to count to 20 by age 3. And I use the screen as a great incentive. My daughter earns “tablet time” when she completes tasks, e.g., making her bed earns 15 minutes while doing her homework gets her 30.
Of course, I have a few rules. During meals, the TV is off; all programs must be monitored; on weekdays, she is limited to two hours maximum. So remember: It doesn't matter what our kids watch; it matters what they do, what they say, what they feel and how they act, and only you know what is best for them.
1. What does the author think about giving her child screen time?| A．It makes her a bad parent. |
| B．It is thought to be true. |
| C．It challenges a popular belief. |
| D．It is in line with experts. |
| A．One. | B．Two. | C．Three. | D．Four. |
| A．Motivator. | B．Entertainer. |
| C．Idea producer. | D．Learning tool. |
| A．Kids are the most important. |
| B．Parents know their children best. |
| C．No rules, no successes. |
| D．TV is not necessarily good or bad. |
3 . Fired bricks are a universal building material, produced by thousand-year-old technology, which throughout history has seldom served any other purpose. But researchers at Washington University in St. Louis have found a new use for bricks:as energy storage units. A team of engineers and chemists have found a way to transform an ordinary house brick into a battery (电池) — allowing it to conduct (传导) and store electricity.
The researchers connect an LED light bulb (灯泡) to the bricks. They are powerful enough to illuminate it and cost only about $3 to make.
“I love the idea of adding value to things that are inexpensive, things that are affordable, things that we see every day,” said Julio D'Arcy, an assistant professor of chemistry at Washington University and one of the researchers on this project.
The new invention relies on something known as iron oxide, a form of matter in bricks that gives them their red colour. The scientists pumped the bricks with several gases that react with iron oxide to produce a network of plastic fibres. These fibres coat the empty spaces inside the bricks — and conduct electricity.
“What we’re trying to do is:we're trying to make specialized plastics and then we can actually put those plastics inside construction materials,”D’Arcy says. “In the future, a brick wall could potentially serve two purposes at one time:providing structural support and storing electricity produced from renewable energy sources,such as solar panels.”
The technology is still at least a few years away from being ready for the market. And right now the energy that the bricks can store is still not much. Hut the team is now testing ways to improve brick performance — because it looks like you can find a new purpose for an old brick.
1. What did the researchers turn bricks into?| A．Lighting equipment. | B．Construction materials. |
| C．An electricity-storage item. | D．A new form of green energy. |
| A．Store. | B．Light. | C．Conduct. | D．Transform. |
| A．Iron oxide. | B．The stored gases. |
| C．The produced fibres. | D．The empty spaces. |
| A．Old Bricks, New Tricks | B．A Bright Future Is on the Way |
| C．A New Way to Produce Electricity | D．Recycled Batteries,Renewable Energy |
