1 . Round and Round They Go
Space is becoming more crowded. On December 3, a Falcon 9 rocket made by Space X thundered into the sky. On board were 64 small satellites, more than any American company had launched before in one go. They have a variety of uses, from space-based- radar to the monitoring of radio-frequency- emissions.
These objects are part of the latest breed of low-Earth-orbit (LEO) satellites. This launch is just taste of what is planned. Space X and One Web, a communications firm, plan to launch satellites in their thousands, not hundreds. The pair are set to double the total number of satellites in orbit by 2027.
That promises to change things dramatically on Earth. LEO satellites can bring internet connectivity to places where it is still unavailable or unaffordable. This will also be a lasting source of new demand for the space economy. Morgan Stanley, a bank, projects that the space industry will grow from $350 billion in 2016 to more than $1. I trillion by 2040. New internet satellites will account for a half this increase.
For that to happen, however, three worries must be overcome. Debris(碎片)is the most familiar concern. As long ago as 1978, Donald Kessler, a scientist at NASA, proposed situation in which, when enough satellites were packed into low-Earth orbits, any collision could cause a chain reaction which would eventually destroy all space craft in its orbital plane(平面). The syndrome which bears Mr. Kessler's name weighs heavily on the minds of executives at the new satellite firms. Debris could cause entire tracts(广阔的一片) of space to be unusable for decades.
Solutions exist. One is to grab malfunction satellites and pull them down into Earth's atmosphere. Another is to monitor space more intensively for debris; a US Air Force program me called Space Fence is due to start in 2019. But technology is only part of the answer. Rules are needed to govern the safe disposal(清除) of old satellites from low-Earth orbit. The United States' Federal Communications Commission is revising its regulations with this in mind. Other countries should follow suit.
Cyber-security is a second, long-standing worry. Hackers could take control of a satellite and seal intellectual property, redirect data flows or cause a collision. The satellite industry has been slow to respond to such concerns. But as more of the world's population comes to rely on the infrastructure of space for access to the internet, the need for action intensifies.
The third issue follows from the first two. If a simple mistake or a cyber-attack can cause a chain reaction which wipes out hundreds of billions of dollars of investment, who is liable? Underwriters(保险商) are studying the plans of firms that wish to operate large numbers of satellites. But there is a long way to go before the risks are well understood, let alone priced.
As space becomes more commercialized mind-bending prospects open up: packages moved across the planet in minutes by rocket rather than by plane, equipment sent to other small planets, passengers launched into orbit and beyond. All that and more may come, one day. But such activities would raise the same questions as LEO satellites do. They must be answered before the space economy can truly develop.
1. What can we learn about LEO satellites from the passage?| A．They are supposed to limit the space economy. |
| B．They are expected to increase in large numbers. |
| C．They are designed to move beyond the Earth as far as possible. |
| D．They are mainly intended to bring internet connectivity to remote areas. |
| A．depending entirely on the modern technology |
| B．monitoring the movement of spaceships carefully |
| C．strengthening rules to remove old satellites safely |
| D．destroying all the satellites with problems instantly |
| A．Measure. | B．Increase. | C．Spread. | D．Repeat. |
| A．Lack of satellite regulations. |
| B．Loss of intellectual property. |
| C．Crisis of confidence in the field. |
| D．Slow response of satellite industry. |
| A．It should be further confirmed for its ownership. |
| B．It should be continued because of its advantages. |
| C．It should be done carefully to avoid potential risks. |
| D．It should be stopped in face of the space economy. |
2 . Scientists have not found any signs of life on Mars yet,but they say a robotic vehicle called “Curiosity” is helping them learn a lot about the planet’s history and climate.
Curiosity landed on Mars in August 2012 after travelling through space for more than eight months.It was sent to Mars by scientists from NASA in the United States.
Curiosity is about the size of a car and has six wheels.It also has a robotic arm,cameras,and instruments that allow it to examine things it finds on the surface.Then it sends the information back to the earth.
Curiosity’s main task is to find out if anything could live on Mars,either now or in the past.On Nov.2,NASA scientists held a press conference (新闻发布会) to discuss what Curiosity had found in its first two months on Mars.
Curiosity has found soil that is similar to the sand formed by volcanoes (火山) on the earth.Scientists say that studying the minerals in Martian soil will help them understand what conditions were like on the planet in the past.Curiosity also found smooth stones like the ones found on river beds and seashores on the earth,where their rough edges have been worn down by water.Mars is very cold and dry now,but scientists say the smooth stones tell them that a river used to run through the place where they were found.
Curiosity has been testing the atmosphere around Mars for a type of gas called methane (甲烷),but so far it has not found any.On the earth,most methane is produced by plants or animals.Methane on Mars might indicate that some type of tiny plants or animals lived there.
Curiosity is the fourth robotic vehicle to be sent to Mars.It will continue to explore the planet for about two years.
1. Which of the following descriptions about Curiosity is TRUE?| A．It landed on Mars in January 2012. |
| B．It is small in size and has four arms. |
| C．It took over eight months to arrive in Mars. |
| D．It was sent to Mars by scientists from Russia. |
| A．there’s no air on Mars | B．Mars is warm and wet now |
| C．the soil on Mars is rich | D．there used to be water on Mars |
| A．smooth stones | B．rivers |
| C．robotic vehicles | D．volcanoes |
| A．some tiny animals once lived on Mars |
| B．there are no plants or animals on Mars now |
| C．the atmosphere around Mars is full of methane |
| D．Curiosity is designed to test the atmosphere around the earth |
| A．Humans benefit a lot by going to Mars. |
| B．Scientists will stop the research on Mars soon. |
| C．It is possible to build an earth-like environment on Mars. |
| D．A robotic vehicle helps scientists get useful information from Mars. |
3 . Composite image of Europe and North Africa at night, 2016. Credit： NASA Earth NPP Observatory images by Joshua Stevens, using Suomi VIIRS data from Miguel Roman, is oftenNASA's Goddard Space Flight Center. Artificial light seen as a sign of progress: the march of civilization shines a light in the dark； it takes back the night； it illuminates. But a chorus of scientists and advocates argues that unnaturally bright nights are bad not just for astronomers but also for nocturnal (夜间活动的)animals and even for human health.
Now research shows the night is getting even brighter. From 2012 to 2016 the earth's artificially lit area expanded by an estimated 2. 2 percent a year (map), according to a study published last November in Science Advances. Even that increase may understate the problem, however. The measurement excludes light from most of the energy-efficient LED lamps that have been replacing sodium-vapor technology in cities all over the world, says lead study author Christopher Kyba, a postdoctoral researcher at the German Research Center for Geosciences in Potsdam.
The new data came from a NASA satellite instrument called the Visible Infrared Imaging Radiometer Suite (VIIRS). It can measure long-wavelengths of light, such as those produced by traditional yellow-and-orange sodium-vapor street lamps. But VIIRS cannot see the shortwavelength blue light produced by white LEDs. This light has been shown to disrupt human sleep cycles and nocturnal animals, behavior.
Credit: Mapping Specialists ； Source: Artificially Lit Surface of Earth at Night Increasing in Radiance and Extent," by Christopher C. M. Kyba et al. , in Science Advances, Vol. 3, No. 11, Article No. E1701528 ； November 22, 2017.
The team believes the ongoing switch to LEDs caused already bright countries such as Italy, the Netherlands, Spain and the U. S. to register as having stable levels of illumination in the VIIRS data. In contrast, most nations in South America, Africa and Asia brightened, suggesting increases in the use of traditional lighting. Australia actually appeared to lose lit area一but the researchers say that is because wildfires skewed the data.
"The fact that VIIRS finds an increase (in many countries) , despite its blindness in the part of the spectrum that increased more, is very sad," says FabioFalchi, a researcher at Italy's Light Pollution Science and Technology Institute, who did not participate in the study. In 2016 Falchi, along with Kyba and several other members of his research team, published a global atlas of artificial lighting that showed one third of the world's population currently lives under skies too bright to see the Milky Way at night.
The data also cast doubt on the idea that the LED lighting revolution will lead to energy cost savings. Between 2012 and 2016 the median nation pumped out 15 percent more long- wavelength light as its GDP increased by 13 percent. And overall, countries, total light production correlated with their GDP. In other words, Kyba says, "we buy as much light as we are willing to spend money on."
1. Which is not true about the spread of lit areas?| A．Lit area expanded by an estimated 2. 2 percent a year. |
| B．Artificial light is often seen as a sign of progress. |
| C．The increase in GDP is due to the increase in light. |
| D．It is bad for noctumal animals and even for human health. |
| A．It is a kind of NASA satellite device. |
| B．It can record and analyzed long-wavelength light. |
| C．The blue light generated by white LEDs can disrupt human sleep cycles. |
| D．VIIRS has found an increase of traditional lighting in lots of nations. |
| A．Artificial LED lights at nights are harmful to people's health. |
| B．It is a sign of civilization in modern society. |
| C．The blue light disrupts human and animals" life cycles. |
| D．Artificially lit surface of Earth increasing because of LEDs. |
| A．show the VIIRS data from NASA |
| B．demonstrate the significance of VIIRS for its measurement of wavelengths |
| C．reveal the relationship between wavelength light and GDP |
| D．arouse peoples awareness of light pollution |
4 . All I had to do for the two dollars was clean her house for a few hours after school. It was a beautiful house, too, with a plastic-covered sofa and chairs, wall-to-wall blue-and-white carpeting, a white enamel stove, a washing machine and a dryer—things that were common in her neighborhood, absent in mine. In the middle of the war, she had butter, sugar, steaks, and seam-up-the-back stockings.
I knew how to scrub floors on my knees and how to wash clothes in our zinc tub, but I had never seen a Hoover vacuum cleaner or an iron that wasn't heated by fire.
Part of my pride in working for her was earning money I could squander (浪费)：on movies, candy, paddleballs, jacks, ice-cream cones. But a larger part of my pride was based on the fact that I gave half my wages to my mother, which meant that some of my earnings were used for real things—an insurance-policy payment or what was owed to the milkman or the iceman. The pleasure of being necessary to my parents was profound. I was not like the children in folktales: burdensome mouths to feed, nuisances to be corrected, problems so severe that they were abandoned to the forest. I had a status that doing routine chores in my house did not provide—and it earned me a slow smile, an approving nod from an adult. Confirmations that I was adultlike, not childlike.
In those days, the forties, children were not just loved or liked; they were needed. They could earn money; they could care for children younger than themselves; they could work the farm, take care of the herd, run errands（差事）, and much more. I suspect that children aren't needed in that way now. They are loved, doted on, protected, and helped. Fine, and yet...
Little by little, I got better at cleaning her house—good enough to be given more to do, much more. I was ordered to carry bookcases upstairs and, once, to move a piano from one side of a room to the other. I fell carrying the bookcases. And after pushing the piano my arms and legs hurt so badly. I wanted to refuse, or at least to complain, but I was afraid she would fire me, and I would lose the freedom the dollar gave me, as well as the standing I had at home—although both were slowly being eroded. She began to offer me her clothes, for a price. Impressed by these worn things, which looked simply gorgeous to a little girl who had only two dresses to wear to school, I bought a few. Until my mother asked me if I really wanted to work for castoffs. So I learned to say "No, thank you" to a faded sweater offered for a quarter of a week5s pay.
Still, I had trouble summoning （鼓起）the courage to discuss or object to the increasing demands she made. And I knew that if I told my mother how unhappy I was she would tell me to quit. Then one day, alone in the kitchen with my father, I let drop a few whines about the job. I gave him details, examples of what troubled me, yet although he listened intently, I saw no sympathy in his eyes. No "Oh, you poor little thing. " Perhaps he understood that what I wanted was a solution to the job, not an escape from it. In any case, he put down his cup of coffee and said, 44Listen. You don't live there. You live here. With your people. Go to work. Get your money. And come on home. ”
That was what he said. This was what I heard:
Whatever the work is, do it well—not for the boss but for yourself.
You make the job; it doesn't make you.
Your real life is with us, your family.
You are not the work you do; you are the person you are.
I have worked for all sorts of people since then, geniuses and morons, quick-witted and dull, big-hearted and narrow. I've had many kinds of jobs, but since that conversation with my father I have never considered the level of labor to be the measure of myself, and I have never placed the security of a job above the value of home.
1. What is the "pleasure" of the author from the sentence "The pleasure of being necessary to my parents was profound. （paragraph 3） " ?| A．She was proud as she could earn money for her mother. |
| B．Her own value of being needed. |
| C．She is distinctive from those children in folktales. |
| D．She enjoyed a status of being an adult in her family. |
| A．Children become needed, loved and liked when they are at forty. |
| B．Children in modern times are less likely to be spoiled by parents. |
| C．Children in 1940s are capable as they can handle various daily routine. |
| D．Children in modern times aren' t needed to do daily works any more. |
| A．Don't escape from difficulties at work. |
| B．Whatever decision she made, her father would support her. |
| C．Convey her dissatisfaction with her work. |
| D．Make a distinction between work and life. |
| A．Don't regard work achievement as a criterion for evaluating oneself. |
| B．Hard work is a struggle for a better future in your limited life. |
| C．Parents are the best teachers of children. |
| D．Job security is less valuable when compared with family. |
5 . I'd done it before, and so I had no reason to believe that this time would be any different. I was sure that when I returned home from my mission trip, as always, I'd bring back nothing more than some mud on my boots, a hole or two in my jeans and, of course, a lot of great memories.
The summer before my high school graduation, I went to West Virginia with others as volunteers to repair the homes of those in need. Arriving at our destination, my group was assigned the task of rebuilding sections of a home that had been damaged by fire. No sooner had we parked on the home's dirt driveway than we saw an excited little girl, no more than six years old, standing in the doorway of the family's temporary home. Shoeless and wearing dirty clothes and the biggest smile I'd ever seen, she yelled, "Ma, Ma, they really came! " I didn't know it then, but her name was Dakota, and four more days would pass before she’d say another word near me.
Behind Dakota was a woman in a wheelchair—her grandmother, we'd soon learn. I also discovered that my job that week would be to help change a fire—damaged dining room into a bedroom for this little girl. Grabbing our tools, we went to work. Over the following days, I noticed Dakota peeking at us every now and then as we worked. A few times. I tried talking with her, but she remained shy and distant, always flying around us like a tiny butterfly but keeping to herself.
By our fifth and final day, however, this was about to change.
Before I went to work on her home on that last morning, I spoke for a moment or two with the grandmother. I was especially pleased when she told me how much Dakota loved her new room so much, in fact, that she'd begged to sleep in it the previous night, even though it wasn't quite ready. As we talked, I noticed something I hadn’t seen before—Dakota was hiding behind her grandmother. Cautiously, she stepped into view, and I could see that just like her clothes, her face was still dirty. But no amount of soil could hide those bright blue eyes and big smile. She was simply adorable. I wanted so much to hug her, but respecting her shyness, I kept my distance.
Slowly, she began walking toward me. It wasn't until she was just inches away that I noticed the folded piece of paper in her tiny hand. Silently, she reached up and handed it to me. Once unfolded, I looked at the drawing she'd made with her broken crayons on the back of an old coloring book cover. It was of two girls—one much taller than the other—and they were holding hands. She told me it was supposed to be me and her and on the bottom of the paper were three little words that instantly broke my heart. Now almost in tears, I couldn't control myself anymore—I bent down and hugged her. She hugged me, too. And for the longest time, neither one of us could let go.
By early afternoon, we finished Dakota's bedroom, and so I gladly used the rare free time to get to know my newest friend. Sitting under a tree away from the others, we shared a few apples while she told me about her life. As I listened to her stories about the struggles she and her family went through daily, I began to realize how boring various aspects of my own life were.
I left for home early the next morning. I was returning with muddy boots and holes in my jeans. But because of Dakota, I brought back something else, too—a greater appreciation for all of the blessing of my life. I’ll never forget that barefoot little butterfly with the big smile and dirty face. I pray that she’ll never forget me either.
1. From the appearance description of the little girl, we know _______.| A．she formed a bad living habit |
| B．she hoped for a better education |
| C．she was an innocent and lovely child |
| D．she was strong and calm in the inner world |
| A．Enjoy your help. |
| B．Please don’t leave. |
| C．Help me, please. |
| D．Hug me close. |
| A．She worried about the little girl’s future. |
| B．She decided to keep helping the little girl. |
| C．She felt a greater affection for the little girl. |
| D．She got surprised at the little girl’s worthless gift. |
| A．One must learn to share life experiences. |
| B．One often wants to lead a meaningful life. |
| C．One occasionally benefits from the poverty. |
| D．One should be more grateful for the gift of life. |
6 . In a recent announcement, Harvard and the Massachusetts Institute of Technology（MIT）said that they have joined forces to offer free online courses in an effort to attract millions of online learners worldwide.
Beginning this fall, a number of courses developed by teachers at both universities will be offered online through a new $60 million program, known as edX. “Anyone with an Internet connection anywhere in the world can use our online courses,” Harvard President Drew Faust said during a meeting to announce the plan.
MIT has offered a program called OpenCourseWare for ten years that makes materials from more than 2,000 classes free online. It has been used by more than 100 million people. In December, the school announced it also would begin offering a special certificate, known as MITx, for people who complete certain online courses. Harvard has long offered courses to a wider population through a similar program.
The MITx will serve as the foundation for the new learning platform.
MIT President Susan Hockfield said more than 120,000 people signed up for the first MITx course. She said Harvard and MIT hope other universities will join them in offering courses on the open-source edX platform.
“Fasten your seatbelts,” Hockfield said.
Other universities, including Stanford, Yale and Carnegie-Mellon, have been experimenting with teaching to a global population online.
The Harvard-MIT program will be monitored by a not-for-profit（非盈利的）organization based in Cambridge, to be owned equally by the two universities. Both MIT and Harvard have provided $30 million to start the program. They also plan to use the edX platform to research how students learn and which teaching methods and tools are most successful.
1. According to this text, edX is _______.| A．a part of the free MIT OpenCourseWare |
| B．a free computer program by MIT and Harvard |
| C．a Harvard-MIT platform of free online courses |
| D．a free program online for universities worldwide |
| A．Universities have been trying online courses. |
| B．About 2,000 online courses have been offered. |
| C．Over 100 million people have finished courses online. |
| D．Stanford and Yale together have courses similar to edX. |
| A．Get ready for the difficulties |
| B．Get ready for this educational change |
| C．Get prepared to complete the online courses |
| D．Get prepared to make materials for the edX courses |
| A．It is first offered as part of the edX learning program. |
| B．It is another free MIT-Harvard online learning program. |
| C．It is a standard to recognize online learners’ achievement. |
| D．It is a new kind of free online course of Harvard and MIT. |
7 . This time of year many of us are determined to get back into shape. But if you are having trouble fitting into your tight jeans, it may not be your fault. Scientists now believe that willpower alone is not enough to lose weight. They say success depends on your genes, hormones (荷尔蒙) and psychology.
A study of 75 people by BBC Science and Oxford and Cambridge Universities has looked into why one-size-fits-all diets are often not successful. The scientists divided over-eaters into three groups—people who feast, people who constantly crave food and emotional eaters. They tailored (定制) diets to the needs of each group.
Feasters can’t stop eating once they start. This is because they don’t have the hormones that tell them when they are full. Scientists designed a diet for this group paying special attention to high protein foods that make them feel full for a long time. This included fish, chicken, basmati rice and grains. Bread and potatoes were not allowed because they do not fill you up for long.
Constant cravers always feel hungry. Scientists say that certain genes stop the messages the stomach sends to the brain saying it is full, meaning the cravers always feel like they need more fatty, sugary food. Dieting seven days a week is very hard for these people, so scientists put them on a normal, healthy diet five days a week, and eating whenever they feel stressed. To help them change this behaviour, scientists offered them group support in meetings and online as well as a diet.
During the study, people from all three groups lost weight on the tailored diets, with feasters losing the most and constant cravers losing the least.
So what about you? If any of the eating habits sound familiar, perhaps you should consider a new approach to slimming for now.
1. What is the solution that scientists suggest for feasters?
| A．Providing them with a certain hormone. |
| B．Designing a high-protein diet for them. |
| C．Reducing their calorie intake on the weekend. |
| D．Giving them group support in meetings and online. |
| A．Bread and potatoes are harder to digest than fish and chicken. |
| B．Anyone can lose weight only if he or she has strong determination. |
| C．Emotional eaters are more likely to lose weight than constant cravers. |
| D．Scientists will find one-size-fits-all diets for those who want to lose weight. |
| A．Three factors that determine our success in getting back into shape. |
| B．Three approaches to losing weight according to eating habits. |
| C．Willpower is not enough to lose weight. |
| D．A research on tailored diets. |
8 . How good are we at predicting（预测）what people will do? What magazine will they buy, what music will they download, or what shoes will they choose for a party? Probably not nearly as good as we think. When it comes to human behavior, the brain is shown to have two different ways of thinking. So it doesn’t matter how old you are or how confident you are feeling. It’s all about what mood the brain is in!
A common thought process is the automatic and fast way which helps us to react（反应）quickly in dangerous situations. This is known as system I and dates back to the prehistoric times when people lived with a natural awareness of the dangers around them—bad weather, falling rocks and trees, and threatening animals. Nowadays we still have the ability to react so rapidly and naturally to situations that it can feel like you’re not thinking at all. Have you ever found yourself giving in to temptation （诱惑） and unable to say “no” to buying that new jacket in the window? This is because system 1 is in control—a human characteristic which the world of advertising likes to make the most of!
System 2 is the opposite. It’s a slow thought process that requires us to pay attention and concentrate. This way of thinking helps us to make sensible long-term decisions like choosing which university to study at, or what type of car to buy. The problem is that system 2 often starts to feel boring and so system I takes over. How often have you put down your homework or put off doing important jobs to go on Facebook or watch a TV soap?
We like to think that we go through life mainly using system 2. However, sometimes it’s system 1 that makes the right decision but system 2 that gets it wrong. For example, sports teams put a lot of effort into a game plan, but often it’s the unconscious（无意识的）human wish to do something differently that often leads to an unexpected win. This can also lead to the common mistaken idea that your successful decisions show your skill and talent, when in fact they were just luck.
Perhaps one day scientists will be able to predict what decisions people will make by measuring brain activity. In one study, volunteers were monitored with brain-scanning equipment. They were asked to press either a left or a right button whenever they wanted. The researchers found they could predict which button the volunteers would press up to seven seconds before it happened—your brain seems lo know what it will do before you do! Some scientists say our brains are just machines and we are not really in control of what’s going on. Let’s hope they’re wrong! It’s one thing to be able to tell which of two buttons a person will press, but I don’t like the idea that science could one day tell me what decisions 1 will make in my life before I’ve even had the chance to make them!
1. System 1 is more likely to be in control when you ________.| A．choose a university |
| B．plan a birthday party |
| C．buy a jacket in the window |
| D．prepare for a performance |
| A．people are more willing to use system 1 |
| B．we go through life mainly using system 2 |
| C．system 2 usually makes the wrong decision |
| D．system I sometimes makes the right decision |
| A．Unhappy. | B．Uninterested. |
| C．Hopeful. | D．Confident. |
| A．Two Systems of Thought |
| B．Early Brain Development |
| C．The Importance of Planning |
| D．Two Ways of Dealing with Danger |
The consumer electronics industry came unbuttoned in Las Vegas this week. At the annual Consumer Electronics Show, companies from around the world unveiled many devices boasting (以拥有…而自豪) touch – sensitive technology, rather than traditional push-button controls.
Motorola, Sony, and LG Electronics all showed off touch-screen phones this week. Microsoft Chairman Bill Gates praised and offered a touch-screen computer, the Surface, related to a flat panel TV for a tabletop. Even camera makers, such as Kodak，included touch-screen LCDs in their devices. Touch-screen tech has been in use for years，but the push to develop and weave it into consumer electronics gathered steam with the June introduction of Apple’s iPhone. “The touch-screen industry is really getting hot,” says Jennifer Colegrove, a senior analyst at iSuppli. “Since the iPhone came out, there are a lot of companies that did not have a relationship with touch screens before that decided, ‘OK, I want to make a touch screen, too.’”
The touch－screen tech ecosystem now includes more than 100 companies specializing in everything from smudge-proof (防污的) screens to sensors (传感器) able to detect fingers before they even contact the screen. Sales of leading touch-screen technologies，such as those used in mobile phones and navigation (航行) devices，are expected to rise to $ 4.4 billion in 2012, up from $ 2.4 billion in 2006，according to iSuppli estimates.
1. What did the writer think about the Apple iPhone？
| A．The Apple iPhone was beautiful. |
| B．The Apple iPhone was popular. |
| C．The Apple iPhone was expensive. |
| D．The Apple iPhone was attractive. |
| A．Invented. | B．Unlocked. |
| C．Discovered. | D．Showed. |
| A．traditional push-button controls |
| B．Microsoft Chairman Bill Gates |
| C．the introduction of Apple’s iPhone |
| D．the touch-screen tech ecosystem |
| A．The touch-screen technology will disappear. |
| B．The touch-screen technology will be replaced by traditional push-button controls. |
| C．The touch-screen technology will be as important as traditional push-button controls. |
| D．The touch-screen technology will be more widely used in electronics devices. |
