1 . Artificial intelligence (AI) is showing promise in earthquake prediction, challenging the long-held belief that it is impossible. Researchers at the University of Texas, Austin, have developed an AI algorithm (算法) that correctly predicted 70% of earthquakes a week in advance during a trial in China and provided accurate strength calculations for the predicted earthquakes.
The research team adopted a relatively simple machine learning approach. The AI was provided with a set of statistical features based on the team’s knowledge of earthquake physics, and then instructed to train itself using a five-year database of earthquake recordings. Once trained, the AI provided its prediction by listening for signs of incoming earthquakes within the background rumblings (隆隆声) in the Earth.
This work is clearly a milestone in research for AI-driven earthquake prediction. “You don’t see earthquakes coming,” explains Alexandros Savvaidis, a senior research scientist who leads the Texas Seismological Network Program (TexNet). “It’s a matter of milliseconds, and the only thing you can control is how prepared you are. Even with the 70% accuracy, that’s a huge result and could help minimize economic and human losses and has the potential to remarkably improve earthquake preparation worldwide.”
While it is unknown whether the same approach will work at other locations, the researchers are confident that their AI algorithm could produce more accurate predictions if used in areas with reliable earthquake tracking networks. The next step is to test artificial intelligence in Texas, since UT’s Bureau TexNet has 300 earthquake stations and over six years worth of continuous records, making it an ideal location for these purposes.
Eventually, the authors hope to combine the system with physics-based models. This strategy could prove especially important where data is poor or lacking. “That may be a long way off, but many advances such as this one, taken together, are what moves science forward,” concludes Scott Tinker, the bureau’s director.
1. How does the AI predict earthquakes?A.By identifying data from the satellites. |
B.By analyzing background sounds in the Earth. |
C.By modeling data based on earthquake recordings. |
D.By monitoring changes in the Earth’s magnetic field. |
A.The ways to reduce losses in earthquakes. |
B.The importance of preparing for earthquakes. |
C.The significance of developing the AI prediction. |
D.The limitation of AI algorithms in earthquake prediction. |
A.Conducting tests in different locations. |
B.Applying the AI approach to other fields. |
C.Building more earthquake stations in Texas. |
D.Enlarging the database to train the calculation accuracy. |
A.Stable but outdated. | B.Effective but costly. |
C.Potential and economical. | D.Advanced and promising. |
2 . If you have a big test coming up or want to do well in class, studying is one of the best things you can do. Here are some tips on forming the best study habits so you can do your best in class.
Study in 1-hour blocks.
Plan regular breaks. Since studying takes up a lot of energy and brain power, it’s a good idea to schedule 5-10 minutes of relaxation every hour.
Rewrite your notes in your own words. Organizing your notes helps you remember information a lot easier.
A.Form a study group. |
B.Stay organized and work somewhere quiet. |
C.Avoid working through the breaks you’ve planned. |
D.Find places that work best for you so you can focus. |
E.Keep your study time shorter so you don’t get worn out. |
F.Solve problems independently before comparing answers. |
G.Even if you took notes in class, the information may be all over the place. |
3 . As warm blood spattered all over us, I screamed… actually it was water, but that didn’t stop me being so scared that my heart was nearly beating out of my chest. My friend had persuaded me onto the Hotel Psycho ride at the Prater Amusement Park, I’m unwilling to experience any fear, but I decided to do it anyway. I came off the ride shaking but excited.
Apparently Eleanor Roosevelt didn’t actually say “do one thing that scares you every day”, as is often thought, but nevertheless it’s a great rule to follow. You don’t need to go on a fairground ride or jump out of a plane, but it is a good idea to push yourself out of your comfort zone regularly.
The human brain, particularly the amygdale (杏仁核), is designed to keep you safe. This sounds like a good thing, and obviously, sometimes it is. However, the fact that the amygdala is always on the lookout for danger means that it will prioritize protecting you over almost anything else: learning something new, experiencing something amazing, getting a great opportunity and meeting other people. The amygdala would really just like you to stay put in a nice safe dark cave.
The more you listen to its urgings to avoid all risks, the narrower and darker your life will become. There is plenty of evidence that the most effective way to deal with our fears and anxieties is exposing ourselves to what we fear. You can start off with small steps, but the more you confront (面对) your fears, the smaller they become: whereas the more you allow your fears to prevent you from doing things, the bigger those fears seem to be.
For this reason, it is important to stretch yourself and keep all those possibilities open. You need to take risks and do things that petrify you, so that you know just what you’re capable of. Sometimes those risks won’t work out, but that’s fine, as long as you can learn from the experience, and get ready for the next adventure.
1. How does the author introduce the topic of the text?A.By giving a definition. | B.By telling a horrible story. |
C.By quoting from a classic book. | D.By describing his own experience. |
A.It stops people from trying things out. |
B.It functions well in a dark environment. |
C.It introduces some risk-taking activities. |
D.It highlights people’s demand for learning. |
A.They could be hard to overcome. |
B.They should be addressed effectively. |
C.They would be necessary for survival. |
D.They might be regular visitors to our life. |
A.Inspire. | B.Scare. | C.Comfort. | D.Anger. |
4 . “IS THERE A DOCTOR ON BOARD?” No doctor wants to hear these words while
I was out of my
I did a quick
Suddenly her husband opened his eyes, looked at me, smiled and asked what had happened. “Well, you lost consciousness (意识) for a few minutes,” I said. “Your heart beat isn’t quite right, and that may have
Three weeks later, I received a lovely thank you note from this kind gentleman, who will hopefully remain in good
A.working | B.sleeping | C.flying | D.shopping |
A.brightened | B.separated | C.crowded | D.darkened |
A.broke down | B.gave out | C.rang out | D.died down |
A.seat | B.bed | C.office | D.room |
A.waving | B.opening | C.folding | D.holding |
A.relate | B.agree | C.respond | D.return |
A.rescued | B.awakened | C.forgotten | D.noticed |
A.examination | B.experiment | C.communication | D.protection |
A.smoothly | B.heavily | C.deeply | D.quickly |
A.controlling | B.seeing | C.pushing | D.monitoring |
A.clean | B.long | C.past | D.special |
A.act | B.celebrate | C.value | D.prepare |
A.amusing | B.boring | C.relieving | D.tiring |
A.caused | B.attacked | C.blamed | D.directed |
A.background | B.balance | C.health | D.business |
One afternoon in August, five years after Mom passed away, I was unpacking my groceries(食品杂货) in my kitchen. When I lifted my left hand out of a grocery bag, I suddenly couldn’t breathe. Looking at the ring on my finger, I found the star sapphire (蓝宝石)was gone. Mom had given me the ring on my twenty-first birthday. I had worn it every day for twenty-nine years. It was a reminder of Mom and a symbol of our love.
“No! No! No!” I yelled, hurrying to check the bag and the floor, and then my car, but the star sapphire was nowhere to be found. Feeling helpless, I called my best friend, Marie. “The star sapphire in my ring fell out. I don’t know what to do,” I said, extremely worried.
Marie replied, “Please don’t be anxious. Try to stay calm and positive. You can go back to the places you just visited and take a look.” But how could I keep hope in seemingly impossible situations? Anyway, I started my car and drove to the grocery store again. I couldn’t shake the feeling that there was little chance that I could find my stone.
Back at the grocery store, I pulled into the same parking spot and looked everywhere for my star sapphire. My hands and knees felt the hot ground as I searched crazily around and under my SUV car. Then I rushed inside the store, searching for a familiar face for more help. I spotted Amanda, a staff member whom I had met on previous shopping trips, and urgently tapped her on the shoulder. “I was just here twenty minutes ago and lost the stone of this ring. It’s very special to me. It’s from my late mom. Could you please help me look for it?” I cried, unaware that many other people around also heard my words.
Amanda’s eyes softened and she nodded understandingly. She immediately took a large mop(拖把) and started carefully sweeping it back and forth down the first aisle (过道) of the huge store.
Paragraph 1:In tears, I called after her, “It’s light blue and small.”
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Paragraph 2:
Suddenly, a customer near the counter excitedly called out loudly, “Oh, Madam, I’ve found it!”.
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________6 . When we’re in trouble, we always turn to our parents for help. But would you like them to hear the conversations you have with your friends on the school playground or lunch queue? Social networking sites have become extensions (延伸) of the school hallways, so would you add your parents as “friends” and allow them to view your online activities and conversations with friends?
In the past the generation gap included a technology gap, where children were up to date with the latest technology and parents were left behind, content to continue their day-to-day lives as they always had because they had no need to know more about technology. However, more and more parents are beginning to realize just how important social networks are in their lives. This realization has given many parents the motivation (动机) to educate themselves about social networking sites.
These days many people are attracted to social networking sites because they can choose who they have around them, there’s also a certain amount of control over privacy (隐私) that we don’t get in real life. Sometimes we feel that privacy is violated (违背) when we must accept a “friend” request from a parent or family member.
It’s a difficult choice whether or not to allow a parent to become a part of our online lives. On the one hand we don’t want to “refuse” their request because that might hurt their feelings or make them feel you have something to hide. On the other hand if you do accept, then you could have a sense of being watched and no longer feel free to comment or communicate the way you did before.
A recent survey suggested that parents shouldn’t take it personally if their children overlook (忽略) their requests. When a teenager overlooks a parent’s friend request, it doesn’t necessarily mean that he is hiding something, but it could mean that this is one part of his life where he wants to be independent.
Perhaps talking with parents and explaining would help soften the blow if you do choose not to add them to your friend list.
1. What can we infer from Paragraph 2?A.Parents feel se cure about their privacy online. |
B.Parents have realized the importance of social networks. |
C.Social networks successfully fill the generation gap. |
D.Social networks offer a chance for parents to communicate. |
A.Their parents make negative comments on them. |
B.They hide something from their parents. |
C.Their parents tend to fall behind in technology. |
D.They are unwilling to be watched by parents. |
A.The teenager is hiding something from his parents. |
B.The teenager does not respect his parents’ requests. |
C.The teenager wants to be independent in certain aspects of his life. |
D.The teenager is unfamiliar with the use of social media. |
A.Parents’ friend requests. | B.Privacy online. |
C.The generation gap. | D.Social networks. |
7 . Being a teenager can be challenging, but it can also be exciting. You’re becoming more independent and making decision s for yourself. You are also learning to take risks and solve problems better. And changes are happening throughout your body, even in your brain.
The changes in your brain are influencing how you develop into an adult. Imagine the structure of your brain is like a big road map. Lots of roads lead to different destinations. When you were a child, as you learnt new things, your brain created more and more roads to different destinations. By the time you become a teenager, many different roads lead to the most important places on the map. Now your brain’s job is to make that map more efficient.
As a result, your experiences as a teenager actually influence the way that your brain develops. If you spend hours playing video games, what skills do you use? You learn to see something with your eyes and respond to it with your hands. As you develop those skills, your brain is making sure that the roads leading to them are especially fast and efficient. So, your video-game playing could be preparing you for a career such as a pilot.
This is a great time for you to practice new skills and discover what you’re good at and try what you love doing. Go out and try different activities, and stick to them if you think they are useful. Remember that with everything you do, you’re shaping your brain for the future.
1. What happens as children learn new things?A.Their brains make the maps more efficient. |
B.The structures of their brains are like big road maps. |
C.Many different roads lead to the most important places. |
D.Their brains create more roads to different destinations. |
A.Your brain. | B.Something you see. |
C.Your skill. | D.Something you learn. |
A.Teenagers should experience more and stick to the useful activities. |
B.Teenagers should play more video games in order to be a pilot. |
C.Teenagers should work harder and more efficiently. |
D.Teenagers should learn to be more independent. |
A.Ways of Changing Your Brain. | B.Making Decisions for Yourself. |
C.Developing Your Brain for the Future. | D.Changes Happening in Your Brain. |
8 . Born into a poor farmer’s family in Meixi township in 1960, Liang Ruirong suffered polio (脊髓灰质炎) when he was a child. This physical disability
After failing the college entrance examination, he made a
During the first few years, Liang traveled with the delivery truck to
Liang never forgot about the
Liang’s company is now well-known for environmentally friendly bamboo products. For Liang, the company has
A.promoted | B.checked | C.affected | D.endangered |
A.living | B.comment | C.profit | D.wish |
A.suitable | B.limited | C.rare | D.reasonable |
A.food | B.clothing | C.car | D.bamboo |
A.hardworking | B.curious | C.brave | D.generous |
A.turning to | B.setting up | C.fixing up | D.applying to |
A.receive | B.borrow | C.withdraw | D.collect |
A.confuse | B.annoy | C.occupy | D.present |
A.equipment | B.occupation | C.accommodation | D.furniture |
A.anxiety | B.hardships | C.adventures | D.sorrow |
A.contact | B.exercise | C.effort | D.security |
A.benefit from | B.take over | C.depend on | D.pay for |
A.raised | B.donated | C.exposed | D.cast |
A.done good | B.showed honor | C.put its mind | D.set an example |
A.change | B.disturb | C.adjust | D.achieve |
9 . How to Avoid Internet Addiction
Internet addiction is a common problem that can be just as damaging as any other form of addiction. Maybe you are concerned that you are too dependent on the Internet and feel very upset.
Reach out to friends and family to build more in-person connections If you desire social interaction, call up a friend and make plans to do something fun.
Use relaxation techniques to reduce stress and anxiety. Yoga, meditation, muscle relaxation, and deep breathing are all great ways to relax when you’re feeling stressed.
Watch for signs of Internet addiction and seek help if you notice them. If you are concerned about becoming addicted to the Internet, staying aware of the signs of Internet addiction may help you know when to seek help. Be on the lookout for any signs that you may have become addicted.
A.Act right away to limit your Internet usage. |
B.Replace Internet use with a-healthy activity. |
C.Arrange a family dinner or a game night also helps. |
D.Employ your extra time to do something worthwhile. |
E.Following are several strategies to limit your Internet usage. |
F.You are likely to think that the Internet addiction will ruin your life. |
G.You should not reach for your smart phone or laptop when you are feeling pressured. |
10 . Every year people retire (退休) to Florida, but there’s one retired couple from Michigan who said they are working harder than ever, and that they’re loving every minute of it. That’s because they’re impacting (影响) the lives of hundreds of children in their new community.
John and Karan Byrd decided to start their own sports camp, Amazing Athletes and Super Soccer Stars.
“We were so excited to keep busy, healthy, keep our energy flowing, and do something instead of just coming down to Florida and playing golf,” said John.
“It’s bringing longevity (长寿) to our lives. I do believe that,” said Karan.
They even brought in a secret weapon (武器), their daughter Lauren. “Growing up with them, I was always doing something with them. We were at the park. We were at the pool. We were outside in the backyard jumping on the trampoline (蹦床),” said Lauren. “I mean you’re looking at two of my best friends here. These are my heroes in life.”
The Byrds visited up to seven Child Development Centers throughout Bradenton and Sarasota, and most recently Discovery Point.
“Once in a while at 6:30 in the morning Karan asks if we’re really teaching again and says, ‘I thought today was a day off,’” joked John.
The camp focuses on the fundamentals (基础) of 10 different sports and continues to build on them each week. “Some of the kids didn’t even feel comfortable with the ball coming toward them and now they want to be the first in line to catch the ball,” said John.
The Byrds hope to inspire other retirees moving to Florida to make an impact in their new community. “We will stay healthier and we hope to live longer while we are doing this and being retired so we really aren’t retired anymore,” said John.
1. What did the Byrds do after they retired?A.They often played golf. | B.They went to Michigan. |
C.They set up a sports camp. | D.They learned to play soccer. |
A.Longevity is connected to exercise. | B.The Byrds are busy with their work. |
C.Lauren agrees to her parents’ decisions. | D.The Byrds are very good with their daughter. |
A.Exercise can make kids healthy. | B.The kids are showing positive changes. |
C.Good habits don’t develop quickly. | D.The camp needs more forms of sports. |
A.They will never really retire. | B.They will get a new job soon. |
C.They will be an example to others. | D.They will not be afraid of getting old. |