A new study from researchers at the University of California, Los Angeles(UCLA)seems to suggest busy students listening to sped-up video lectures can actually understand a lot.
In the experiment, Alan Castel and a Dillon Murphy divided 231 undergraduate participants into four groups. Each group watched two video lectures: one about the Roman Empire and the other on real estate appraisals (房地产评估). The videos, at normal speed, ranged hetween13 and 15 minutes long. One group watched each video at its normal speed, the second watched them at 1.5 times normal speed, the third at double speed and the fourth at 2.5 times normal speed.
After each individual video, the participants were given a test made up of 20 questions to measure how well they remembered the information. The normal-speed group averaged 26 correct answers out of 40, and were closely followed by the 1.5-speed group and double-speed group, which each scored 25 out of 40. It wasn’t until participants watched the video at 2.5-speed that their performance on the test significantly dropped, to an average of 22 out of 40 questions answered correctly. A week later, when the same participants took new tests without rewatching the videos, the new scores saw the same order of decrease (降低).
The study suggests that, while sped-up videos did not improve student learning comprehension (理解力), they did not put them far behind, either —at least until the speed reached 2.5 times normal speed..
The increase in efficiency that students get from finishing a video in half the time could allow them to take more effective notes. “Students can spend the same amount of time studying, but in perhaps a better way,” Murphy said “That opens the door to the potential benefits of that additional study opportunity.”
The videos in the study were for subjects that can be explained in words pretty easily, Murphy explained, whereas students watching a difficult physics or chemistry lecture at high speeds might see different results. Further research on the same topic could provide details on how well students remember information offered at higher speeds when it comes to those kinds of more challenging topics, the researchers said.
1. Which best describes how the participants watched the two videos?| A．The first group watched videos at different speeds. |
| B．The second group watched the two videos twice. |
| C．The third group watched for less than 15 minutes. |
| D．The fourth group watched for more than 40 minutes. |
| A．The normal-speed watchers did no better than other groups. |
| B．Sped-up videos sometimes affected only a little to the watchers. |
| C．There were great differences among the 4 groups in the testing result. |
| D．The content of the video made no difference in the experiment. |
| A．Critical. | B．Curious. | C．Doubtful. | D．Supportive. |
| A．Give participants more difficult tests after they watch videos. |
| B．Observe the effects of watching videos at lower speeds. |
| C．Let participants watch videos of more complex topics. |
| D．Ask students from various majors to watch videos. |
相似题推荐
【推荐1】Being first in your class is a goal that you can work toward, but you must set it for yourself from the first day of high school.
Read beyond assigned reading. Following your course outline and doing all of your assigned reading are important. But to pull ahead to first rank, you also need to read books that can provide that extra information you need.
Ask for help when you see you need it. Balancing different classes and assignments can make it difficult to keep up in every subject. If you feel that you are having trouble grasping certain topics, don't struggle until your grades begin to slip. Turn to the teachers if necessary.
Ask your teacher for extra credit assignments, particularly if you receive a disappointing grade in a subject. Don’t merely accept the mark. Do everything you can to raise it.
Stay physically fit.
| A．Finish your homework in time. |
| B．Participate in teamwork in class. |
| C．Get plenty of exercise either through team or individual activities. |
| D．Try these tips along your way to help you get that first rank in your class. |
| E．Concentrate on what your teacher explains so that you can grasp the main points. |
| F．Similarly, if you do well in a subject, tell your teacher you’re available to help others. |
| G．If you're studying World War Ⅱ, for instance, read biographies of the important players. |
【推荐2】Many people go to school for a good education. They learn languages, history, maths and other lessons. School education is very important and useful. Yet no one can learn everything from school. No matter how much a teacher knows, he cannot teach his students everything they want to know. His work is to show his students how to learn. He teaches them how to read and how to think. So, much more is to be learned outside school by the students themselves.
It is always more important to know how to study by oneself. It is quite easy to learn something in a language or a formula in maths, but it is difficult to use a formula in finding the answer to a maths problem. Great inventors do not get everything from school but they can invent many things and change the world a lot. Though Thomas Edison invented many things he didn’t have much school education. How do they do all these? Because they know how to study. A lot of things are not taught in the classroom. They get knowledge from books outside school. They work hard all their lives, and the most important thing is that they know how to use their head.
1. What do many people go to school for?| A．To make friends | B．To get a good education |
| C．To get everything | D．To study by themselves |
| A．Try to remember more knowledge and formulas. |
| B．Try to make new things to change the world. |
| C．Try to remember what the teachers teach. |
| D．Try to learn how to read and how to think. |
| A．study by himself | B．be a great inventor |
| C．use his head well | D．remember what he’s been taught |
| A．数学用表 | B．几何图形 | C．数学题 | D．公式 |
| A．School education is important for a person. |
| B．A student should learn how to remember a formula. |
| C．A student can not learn everything from school. |
| D．Inventors can invent things and change the world a lot. |
【推荐3】Ever since the University of Bologna in Haly was founded in 1088 as the first modern university, most people have associated great universities,with major cities.
Colleges and universities in the U.S.,though, have followed a different pattern. To be sure, leading universities such as the University of Chicago and Columbia University in New York City call major urban centers home.
purposes, the whole town.
Given the huge diversity of U.S. higher education, the message for international students shopping for a great university is doubled.
known places may amaze you in an unimaginable manner with their high quality and a significant number of their international students.
| A．Bloomington is also a great college town. |
| B．Think the Sorbonne in Paris or Peking University. |
| C．Set your sights beyond the most well-known schools. |
| D．One reason: there were no major cities there at the time. |
| E．There was no better recipe for popularity than small campuses. |
| F．Part of the explanation for this lies in America's distinctive history. |
| G．But many are located in cities and towns most people have never heard of. |
【推荐1】When a big exam is coming up, you probably feel anxious about any wasted time and want to begin school as soon as you probably can.
But tens of thousands of British high school students will soon be getting up later. They’re taking part in a new experiment by Oxford University to see if later classes can improve their exam results.
Grade 10 students in the UK have to take the nationwide General Certificate of Secondary Education (GCSE) exams. They have to pass these exams in order to study higher level courses, and later apply to universities.
The Oxford University project means that GCSE students from more than 100 schools across England will start school at 10 am, more than one hour later than the current start time (8:50am).
The project is based on scientific evidence that teenagers are “out of sync” with traditional school hours, The Telegraph reported. And what they need is more sleep in the morning.
“We know that something funny happens when you’re a teenager, in that you seem to be out of sync with the world,” said professor Colin Epsie, who is leading the study. “Your parents think it’s because you are lazy and opinionated (固执己见的) and that everything will be OK if you could go to sleep earlier. But science is telling us that teenagers need to sleep more in the morning.”
Everyone follows a natural cycle of sleep. Biology has decided that teenagers go to sleep around midnight and don’t feel fully awake until 9-10 am, according to scientists. That’s two hours later than adults. And their body clocks stay like this until the age of around 21 for males, and 19 for females.
“Society provides schools for learning, but the brain provides sleep. So we are exploring the possibility that if you delay the school start time until 10 am, that will improve learning performance,” said Epsie.
The results could be positive, based on previous studies.
An early study at the UK’s Monkseaton High School in 2009 found that starting an hour later improved grades in major subjects by 19 percent.
The Oxford University project is expecting to publish the results later this year. It’s time to wait and see whether scientists will give us an excuse to get up late.
1. According to the passage, students who take part in the Oxford University project _______.| A．will start school one hour earlier |
| B．will no longer have to take GCSE exams |
| C．will perform better academically than those who don’t participate |
| D．will be guaranteed more sleeping time in the morning |
| A．breaking the habit of doing something |
| B．getting used to doing something |
| C．having no idea of something |
| D．having trouble keeping up with something |
| A．the Oxford University project is aimed at all British high schools |
| B．getting up late is a sign of laziness in the eyes of most British parents |
| C．children and adults have different natural cycles of sleep and wakefulness |
| D．there is still no scientific evidence that supports a late school start time |
| A．Critical. | B．Optimistic. |
| C．Doubtful. | D．Uninterested. |
【推荐2】Did you know that if you attach a weighed stick to the back of a chicken, it walks like a dinosaur?
No, you did not know(or care to know) such things, but now you do! Thanks to this year’s winners of the 12 Noel Prize! Now in is 251h year, the lg Nobel is the goofy younger cousin of the honored Nobel Prize. It applauds achievements in the fields of medicine, biology, physics, economies. literature. etc. Every September at Harvard University, awards are presented in 10 categories that change year to year, depending on - according to the organization - what makes the judges “laugh, then think”.
The ceremony officially begins when audience members launch paper airplanes at an assigned human target on the stage, then speakers only have 60 seconds to present their research. In previous year, the one-minute rule was imposed by a young girl - nicknamed Miss Sweetie Poo -who would go up to the platform and repeat the words: “Please stop, I’m bored.” in a sharp tone until the speaker left the stage.
Fortunately for candidates though, the Ig Informal Lectures are held afterwards on Saturday to give presenters more time to explain the crazy things they're working on.
The research can seem more like the brainchildren of teenage boys than of respectable adults. Justin Schmidt won the physiology Ig for creating the “Sting(蛰) Pain Index," which rates the pain people fell after getting stung by insects. Smith pressed bees against 25 different parts of his body until they stung him. Five stings a day for 38 days, Smith concluded that the most painful sting locations were the nose and the upper lip. Ouch.
As silly as they sound, not all of the Ig awards lack scientific applicability, A group of scientists from 12 different counties won in the medicine category for accurately diagnosing patients with appendicitis (阑尾炎) based on an unusual measurement: speed bumps(减速带) . They found that patients are more likely to have appendicitis if they report pain during bumpy car rides.
All these weird experiments have just one thing in common. They’re improbable. It can be tempting to assume that “improbable” implies more than that--implies bad or good, worthless or valuable, trivial or important. Something improbable can be any of those, or none of them, or all of them, in different ways. And what you don't expect can be a powerful force for not only entertaining science, but also for the boundary-pushing science we call innovation.
1. The underlined word “goofy” in Paragraph 2 probably means_______.| A．amusing | B．boring |
| C．serious | D．precious |
| A．Ig Informal Lecture gives presenters 60 seconds. |
| B．The audience throw paper airplanes to end the ceremony. |
| C．Its categories of awards vary each yea. |
| D．It is held at a fixed place every other September. |
| A．offers another opportunity to those who miss the Nobel Prizes |
| B．celebrates the diligent work of researchers |
| C．has no serious purpose except for amusing the audience |
| D．serves as a platform for the creative and practical achievements |
| A．A chemist who invents a type of battery. |
| B．An economist who studies which county's paper money is best at spreading bacteria. |
| C．A biologist who discovers how cell sense and adapt to oxygen availability. |
| D．A novelist who criticizes social injustice. |
【推荐3】Have you ever wondered why it feels so satisfying to sing in the shower? You are alone. You are warm. The air is moist, making your throat feel wet.
Now imagine singing while driving. You are sitting, stuck by a tight seat belt that limits airflow. Without any warm-up, you probably start right in with the first song you hear. The air is drier. And to stay awake, you may be drinking coffee, which can make you thirsty.
From my personal experience, I realize the importance of not only focusing but also setting the right conditions during practice.
| A．Practice makes perfect. |
| B．You are standing up straight. |
| C．You are loudly clearing your throat. |
| D．Poor training may lead to poor results. |
| E．The stress of driving and staying safe keeps you tense. |
| F．After all, an upright guitar wouldn’t sound right if it was bent. |
| G．I always try to recreate the great feeling of singing in the shower wherever I am. |
【推荐1】A Malawian woman, Gloria Majiga-Kamoto, was recently awarded the Goldman Environmental Prize for Africa — the world’s leading award for grassroots environmental activists.
Gloria Majiga-Kamoto was then working for a local environmental organization with a program that gave goats to rural farmers, who would use the goat waste to produce low-cost, high-quality organic fertilizer (肥料). The problem? The thin plastic bags covering the Malawian countryside. “We have this very common street food, chiwaya, which is salty and served in little blue plastics,” Majiga-Kamoto says. “Goats eat the plastic for salty taste and they die because it blocks the ingestion (摄食) system.” For her, this was the moment when it all changed. All of a sudden, she started noticing how plastics were everywhere in the Malawian environment and food system-affecting people’s living and health.
“I remember back in the day when we’d go to the market and buy things like fish, you’d get it in newspapers,” the 30-year-old says. But thin plastics took off in the last decade or so as new producers sprung up in Malawi, selling products like thin plastic bags at cheap prices. In fact, the Malawian government decided to ban the importation, production and distribution of single-use plastic in 2015. But before the ban could go into full effect, Malawi’s plastics-producing industry appealed to the country’s High Court against the ban, causing it to be suspended.
When Majiga-Kamoto and her fellow environmentalists heard about this, they were annoyed. She organized marches and rejected the plastic industry’s argument that the ban would hurt Malawi’s economy — and even debated with an industry spokesman on TV. Finally in 2019, Malawi’s High Court ruled in favor of the ban. The following year, the government began closing down illegal plastic producers.
Michael Sutton, executive director of the Goldman Environmental Foundation, said, “Majiga-Kamoto’s fight with the plastic industry is a perfect example of the spirit of the prize.”
1. What made Majiga-Kamoto realize the problem?| A．Her experience with plastic-eating goats. |
| B．Her discovery of goat waste everywhere. |
| C．Her doubt about the safety of street food. |
| D．Her care for the farmers living in poverty. |
| A．It used to be extremely rich in fish. |
| B．It advocated using thin plastic bags. |
| C．It failed to ban single-use plastic at first. |
| D．It relied heavily on the plastic industry. |
| A．To put the ban into effect. |
| B．To support the government. |
| C．To back the plastic industry up. |
| D．To promote Malawi’s economy. |
| A．Humble. | B．Generous. | C．Patient. | D．Committed. |
【推荐2】This is a story of a penguin that swims 5,000 miles to a beach in Brazil every year in order to visit the man who saved his life. It sounds like something out of a fairytale (童话故事), but it’s true!
Joao Pereira de Souza is a 71-year-old retired worker and part-time fisherman. He lives in an island village just outside Rio de Janeiro, Brazil. He found the small penguin lying on rocks at his local beach in 2015.
The penguin was starving and covered in oil. Joao rescued the penguin, naming him Din Din, cleaned the oil off his feathers and fed him a daily diet of fish to rebuild his strength.
When Din Din recovered, Mr.de Souza set him free into the sea, never expecting to see his new friend again.
The little guy wasn’t gone long though, and just a few months later, he was back at the same beach. He spotted Joao fishing and followed him home, staying with him for the rest of the year.
Amazingly, this cycle has continued over the past five years. Each year Din Din spends about eight months with Joao and is believed to spend the rest of the time breeding on the Patagonia coasts of Argentina and Chile.
“I love the penguin like he’s my own child and I believe the penguin loves me,”Joao told Globo TV.“No one else is allowed to touch him. He attacks them if they do. He lies on my lap, lets me give him showers, allows me to feed him fish and to pick him up.”
Professor Krajewski, a biologist who interviewed the fisherman for Globo TV, said: “I have never seen anything like this before. I think the penguin believes Joao is part of his family and probably a penguin as well.”
1. What was Din Din like when Joao found him?| A．He couldn’t find his way back home. |
| B．He was trapped in oil and couldn’t breathe. |
| C．He was hungry and weak. |
| D．He was dying on the coast. |
| A．Din Din returned and spent the rest of his life with Joao. |
| B．Din Din returned and spent about eight months a year with Joao. |
| C．Din Din helped Joao with fishing at the beach. |
| D．Din Din guided Joao to the place where he bred. |
| A．Father and child. | B．Fisherman and prey. |
| C．Partners. | D．Animal and keeper. |
| A．Because Joao can help him raise his babies. |
| B．Because Joao helped him to live in the sea. |
| C．Because Joao can provide him with food and shelter. |
| D．Because he considers Joao as his family. |
【推荐3】Veteran Oksana Chusovitina ended her legendary career on Sunday night after competing at a record eighth Olympic Games. After failing to secure a spot in Sunday’s vault final, the 46-year-old, representing Uzbekistan, waved to the small crowd inside Tokyo’s Ariake Gymnastics Center, made a heart shape with her hands and briefly cried.
Born in Uzbek capital Tashkent in 1976, Chusovitina took up gymnastics at age 7, following her older brother into the sport. “My mother did not want me to do gymnastics, she was worried about me all the time. I wanted to prove to her that I was not doing it in vain, and I think I eventually succeeded in that,” Chusovitina once said of her childhood.
She made her Olympic debut (首次亮相) at the 1992 Barcelona Games as part of the gold medal-winning Unified team, comprised of (由……组成) athletes from former Soviet states.
She then represented Uzbekistan, before being granted German citizenship in 2006. She took home a vault silver medal at the 2008 Beijing Games for Germany, but switched back to competing for Uzbekistan in 2013. Chusovitina is one of just two female gymnasts to represent three different nations at the Olympic Games.
When Chusovitina’s 3-year-old son was diagnosed with leukemia in 2002, she sold her possessions and used any prize money she earned to pay for his medical treatment. Her switch to German citizenship was motivated by the promise of a higher income and better medical care.
After her son’s recovery, Chusovitina continued to compete, but this time it was her love of gymnastics that kept her going. “There is no secret. I just love gymnastics and no one ever forced me to compete. I do so with pleasure,” she said.
With COVID-19 rules keeping fans out of the venue, Chusovitina admitted the atmosphere wasn’t what she had hoped. “I would have loved to have spectators, she said. “Of course in terms of performance, it’s better when it’s just you and the apparatus (器具). But every athlete needs this attention and applause.”
“Maybe Fil skip Paris (2024 Games), and go to Los Angeles (2028 Games) for the applause,” she joked. At last, she told reporters, “My son is 22 years old and I want to spend time with him. I want to be a mom.”
1. What is implied about Chusovitina?| A．She once took home a gold medal in her own right. |
| B．She started gymnastics to meet her mother’s expectations. |
| C．She preferred no audience when performing during the pandemic. |
| D．She will probably not compete in the 2028 Olympic Games. |
| A．Because she could secure a spot more easily in the Olympics. |
| B．Because it would guarantee her a lot of prize money. |
| C．Because it meant better medical treatment for her son. |
| D．Because she was granted German citizenship. |
| A．Diligent. | B．Perseverant. | C．Talented. | D．Ambitious. |
| A．A Legend Athlete Fighting in the Olympics | B．Life of a Legend Athlete |
| C．A Legend Athlete, a Smashing Mother | D．A Record Breaker of the Olympics |
