1 . South Korea has the highest rate of Internet addiction in the world and it is increasingly the country’s children who are spending every waking moment immersing themselves in fantasy role plays or gaming. In the remote mountains of South Korea, teenage Internet addicts are turning up for a 12-day boot camp.
Kyle Won’s addiction is out of control. He spends 10 hours a day on the Internet. Now Kyle’s smartphone is taken away. The teachers here do what they can to get them socializing again; for many, the only friends they have had are online. “I have relationships on the Internet and a real distance has grown with my real-life friends and I know it’s not good,” Kyle said. The teachers show them other possibilities and bring back dreams and hopes that have been buried by their addictions. “We teach them methods of managing their desire to use the Internet so that they can continue to use it when they go back home,” Shim Yong-chool, a teacher here, said. After just two days Kyle said it was helpful. He’s set a good example to others though he hasn’t reached the goal completely.
South Korean psychiatrists (精神病专家) are urging more action as they are finding evidence that too much screen time is a barrier to the developing minds. Professor Kang Seak Young from Dankook University said the addiction was damaging critical thinking. “It affects the frontal lobes (额叶) which are important to critical analysis,” Professor Kang said. “Reading a book and guessing what happens in the story next show activity in frontal lobes but playing popular computer games for a long time shows no activity.”
South Korea is one of the most wired nations on Earth, but it does have a cost. One in every ten kids is an addict, so the country is now learning how to manage its high-tech future to avoid more serious consequences.
1. Why does the author mention Kyle’s story?2. Which saying can explain the underlined sentence in the last paragraph?
| A．There are two sides to every coin. | B．No pain, no gain. |
| C．It’s good to learn at another man’s cost. | D．Prevention is better than cure. |
2 . Barbara McClintock was one of the most important scientists of the 20th century. She made important discoveries about genes and chromosomes(染色体).
Barbara McClintock was born in 1902 in Hartford, Connecticut. Her family moved to the Brooklyn area of New York City in 1908. Barbara was an active child with interests in sports and music. She also developed an interest in science.
She studied science at Cornell University in Ithaca, New York. Barbara was among a small number of undergraduate students to receive training in genetics in 1921. Years later, she noted that few college students wanted to study genetics.
Barbara McClintock decided to study botany, the scientific study of plants, at Cornell University. She completed her undergraduate studies in 1923. McClintock decided to continue her education at Cornell. She completed the master’s degree in 1925. Two years later, she finished all her requirements for the doctorate degree.
McClintock stayed at Cornell after she completed her education. She taught students botany. The 1930s was not a good time to be a young scientist in the United States. The country was in the middle of the great economic depression. Millions of Americans were unemployed. Male scientists were offered jobs. But female geneticists were not much in demand.
An old friend from Cornell, Marcus Rhoades, invited McClintock to spend the summer of 1941 working at the Cold Spring Harbor Laboratory. It is a research center on Long Island, near New York City. McClintock started a temporary job with the genetics department. A short time later, she accepted a perpetual position in the laboratory and got continual incomes. This gave her the freedom to continue her research without repeatedly asking for financial aid.
By the 1970s, her discoveries had had an effect on everything from genetic engineering to cancer research. McClintock won the Nobel Prize for Physiology or Medicine in 1983 for her discovery of the ability of genes to change positions on chromosomes. She was the first American woman to win an unshared Nobel Prize.
1. When did McClintock get a doctorate degree?| A．In 1921. | B．In 1923. | C．In 1925. | D．In 1927 |
| A．male scientists were in great demand |
| B．male scientists were out of work |
| C．female geneticists were not in demand at all |
| D．young female scientists might have trouble finding a job |
| A．A permanent position in the laboratory. |
| B．A temporary job in the genetics department. |
| C．A job as a botany teacher. |
| D．A job to research cancer. |
| A．Because she received a degree in genes and chromosomes. |
| B．Because she contributed to genetic engineering and cancer research. |
| C．Because she made important discoveries about genes and chromosomes. |
| D．Because she was the first American woman who studied genes and chromosomes. |
3 . Some colors people see late at night could cause signs of clinical depression. That was the finding of a study that builds on earlier study findings. They show that individuals who live or work in low levels of light overnight can develop clinical depression. Doctors use the word “clinical depression” to describe severe form of depression. Signs may include loss of interest or pleasure in most activities, low energy levels and thoughts of death or suicide.
In the new study, American investigators designed an experiment that exposed hamsters（仓鼠）to different colors. The researchers chose hamsters because they are nocturnal, which means they sleep during the day and are active at night. The animals were separated into four groups. One group of hamsters was kept in the dark during their night-time period. Another group was placed in front of a blue light, a third group slept in front of a white light, while a fourth was put in front of a red light. After four weeks, the researchers noted how much sugary water the hamsters drank. They found that the most depressed animals drank the least amount of water.
Randy Nelson heads the Department of Neuroscience at Ohio State University. He says animals that slept in blue and white light appeared to be the most depressed. “What we saw is that these animals didn’t show any sleep uneasiness at all but they did mess up biological clock genes and they did show depressive sign while if they were in the dim（微弱）red light, they did not.”
Randy Nelson notes that photosensitive（感光）cells in the eyes have little to do with eyesight. He says these cells send signals to the area of the brain that controls what has been called the natural sleep-wake cycle.
He says there’s a lot of blue in white light. This explains why the blue light and white light hamsters appear to be more depressed than the hamsters seeing red light or darkness.
1. Researchers use hamsters in the experiment because ________.| A．they are similar to humans in dealing with colors |
| B．they are easy to observe and study |
| C．they are active at night and sleep during the day |
| D．they are sensitive to colors like human beings |
| A．They don’t sleep well. | B．They drink less sugary water. |
| C．Their eyesight becomes worse. | D．Their energy level becomes low. |
| A．Blue light | B．Red light |
| C．Dim light | D．Darkness |
| A．Not being exposed to dim red light when using computers. |
| B．Living or working in low levels of light overnight. |
| C．Equipping their computer screens to put it more in the reddish light. |
| D．Going to see doctors of clinical depression regularly for help. |
4 . With 60 miles of canals and nearly 7,000 buildings dating from the 18th century or earlier, Amsterdam is one of Europe’s best preserved cities. Here are some of our favorites.
The Concertgebouw
A free classical concert in one of the world’s greatest concert halls? Sounds too good to be true, but every Wednesday at lunchtime that’s exactly what’s on offer at the Concertgebouw. The latest series just started up again this month and will run through June. You can pick up a free ticket (one per person) on the day of the show starting at 11:30 a.m.; the concert takes place from 12:30 p.m. to 1 p.m.
Rijksmuseum Gardens
Take a walk in the beautiful formal gardens of the Rijksmuseum, which are dotted with fascinating artworks. There’s a life-size chessboard, a fountain by contemporary Danish artist Jeppe Hein, and post-war climbing frames by architect Aldo van Eyck. The gardens also host sculpture exhibitions — currently there are 21 sculptures on show by the Spanish artist Joan Miró until October 11.
The Muziektheater
This important opera, dance and music venue has free weekly lunchtime concerts by top performers on Tuesdays from 12:30 p.m. to 1 p.m. in the entrance hall, from September to May. Once or twice a month, the concert is followed by a free tour of the theatre — check the website for details.
Central Library
At the Netherlands’ biggest library, the Centrale Bibliotheek, you can read the international papers for free, and while Wi-Fi isn’t completely free, you can purchase 30 minutes for little more than a dollar by using one of the ticket machines. Upstairs on the 7th floor there is a café with a balcony that boasts wonderful city views.
1. Which one would you prefer if you have a taste for artworks?| A．The Concertgebouw. | B．The Muziektheater. |
| C．Rijksmuseum Gardens. | D．Central Library. |
| A．Enjoy classical music at Concertgebouw. |
| B．Attend the free weekly lunchtime concert. |
| C．Visit sculpture exhibitions of Joan Miró. |
| D．Take a walk in the Rijksmuseum Gardens. |
| A．Wi-Fi in it is free to use. |
| B．You can get a fantastic view of the city. |
| C．It is the biggest library in the world. |
| D．Newspapers at home and abroad are free to read. |
5 . Covid-19 has brought a great deal of trouble for all of us since March 2020. During this time, mobile phones have been the solution for the boredom and restlessness caused from staying indoors. The most downloaded apps on play store 2020 are;
TikTok
TikTok was the most downloaded app. With over 111.9 million downloads, TikTok has seen a huge growth in 2020, twice more than what it got in 2019. 20% of its total downloads were from India and around 9. 3% of the total downloads were in the US.
Zoom
Zoom was the second most installed app in the overall downloads category. With nearly 94. 6 million installs, Zoom is the most used app for online meetings and virtual classrooms. 17% of its downloads were in the US and India. Offices and educational institutes were shut down and to continue working and studying from home, people relied heavily on Zoom for video conferencing and calling.
WhatsApp ranked third in overall downloads with more than 100 million downloads. It is one of the most popular and widely used chat applications; WhatsApp also supports communication between international phone networks.
It ranked fourth in the overall downloaded list. Facebook is the world’s most popular social networking application. Facebook builds technologies that give people the power to connect with friends and family, find communities and grow businesses.
1. What do we know about TikTok?| A．It is an India-based app. | B．It has most users in America. |
| C．It is used for growing business. | D．It has doubled its download than in 2019. |
| A．TikTok. | B．Zoom. | C．WhatsApp. | D．Facebook. |
| A．Communication. | B．Training. | C．Teaching. | D．Payment |
6 . Most people who know about diabetes think there are two kinds: type l, which you are born with, and type 2, which you get later in life from eating too much. This isn't quite right, since the two types can occur at different life stages and for a number of reasons, but the broad distinction is well rooted in the public's mind.
Now some doctors want to change that and break the disease down into five subtypes (子类型), each with its own set of risk factors, outcomes and treatments. The new claim was made by researchers based in Sweden and Finland who assessed almost 15,000 people with diabetes in those countries. They found that these people fell into one of five categories based on their blood sugar, insulin (胰岛素) production and sensitivity, and their body mass index and age. The subgroups also vary genetically.
The researchers say that two of the subtypes are mild and can be largely treated with lifestyle changes and small amounts of a standard drug. People with the three more severe forms are more likely to develop eye and kidney disease, so treating them is a must.
So far, so good. After all, this is the way medicine is heading. The more we learn about common diseases, the more we realize there is huge variation in the way they present themselves. For example, research into the genetics of several cancers has helped identify which treatments might work best for individuals.
The idea that a cheap and fairly straightforward blood test could help doctors predict the cause and prognosis (预断) of that individuals' diabetes is appealing. This is especially the case given that an estimated 9 percent of the global population are affected by the disorder and many aren’t getting the right treatment.
But the five subgroups aren't the end of the story. Diabetes just isn't that simple. For a long time, we considered the condition as being either “childhood-onset” or “adult-onset”, and this is how many people still think of the disease. Yet in the last decade, this classification was questioned as it was discovered that adults in their 40s and 50s could develop a form of the disease that looked very “childhood” like, while more children are developing type 2 diabetes. It is also quite likely that the risks and outcomes of diabetes will look different in people who live outside Sweden and Finland, such as in the Middle East whose nations have some of the highest rates of the condition in the world.
1. What can we learn from Paragraph 1?| A．It is believed that diabetes type 1 results from a bad diet. |
| B．The popular classification of diabetes is not so scientific. |
| C．Children catch diabetes type 1 easily when born. |
| D．People are not fully convinced of the different types of diabetes. |
| A．it helps researchers find out the risk factors of each type |
| B．it makes it possible to find the best treatment for each type |
| C．it helps to make the knowledge of diabetes popular |
| D．it leads people to believe treating diabetes is a piece of cake |
| A．It has found a quick solution for curing diabetes. |
| B．The outcome of the research is sure to be widely applied. |
| C．More researches are needed to know diabetes well enough. |
| D．It confirms that three of the five subtypes are mild form. |
| A．stress the necessity of carrying out researches on diabetes |
| B．correct people's knowledge of classifying diabetes |
| C．advise doctors on how to treat diabetes scientifically |
| D．inform people of a brand-new view on diabetes |
7 . As spring arrives, farmers around the world are making decisions about what crops to plant and how to manage them. In the U. S., farmers typically have big data to help make these decisions. These data have a clear upside. They make farms more productive. In the U.S., the past five years have seen a series of good harvests for both corn and soybean. A big part is generated by effectively using data to produce more food from the same amount of land, seed and fertilizer.
In the poorer parts of the world, however, the picture is much different. Many farmers are guided only by their history with the land and their community's traditions. Their skills and knowledge are impressive, but they suffer from a poverty of data. They rely on technical advisors for advice from governments and academic centers who often have very little knowledge of the local area. For seeds and fertilizers and other materials used in the field, they rely on companies that lack data on how their products will perform in the local conditions.
About 10 years ago, East African officials and their development partners started to explore why so few smallholder dairy farmers made profits from growing demand from urban consumers. Surveys of farmers in the region suggested poor access to veterinary(禽畜的) care and breeding assistance. An effort to provide these services has helped farmers get more milk.
Data would matter little if farming was easy and the paths to productivity were obvious. But in reality, agriculture is a complex mix of many factors, including climate, biology, chemistry, physics, economics and culture—all of which vary from region to region. In this situation, good data is necessary.
1. How has big data benefited American’s farmers?| A．By producing more seeds and fertilizer. |
| B．By helping the farmers to make decisions. |
| C．By informing the farmers to plant crops earlier. |
| D．By increasing the amount of land for farming. |
| A．Big data. | B．Farming skills. | C．Technical guidance. | D．Farming materials. |
| A．To show that East Africa relies heavily on diary farming. |
| B．To illustrate cooperation between countries was a great success. |
| C．To serve as an example of how data helps farmers in poor areas. |
| D．To prove that city people in East Africa didn't like drinking milk. |
| A．Many changeable factors have influence on farming. |
| B．The American farmers can't decide what they will plant. |
| C．East African dairy farmers were experienced in raising cows. |
| D．The technical advisors in poor areas know the local areas well. |
8 . The Adventures of Amilya Rose: The Lie
By Chavonne D. Stewart, Jasmine Mills, published in 2014
Enter for a chance to win a copy of the book.It is the first book in a surprising series of children’s books. That’s fun and exciting and teaches kids valuable lessons.
Chester and Gus
By Cammie McGoven, published in 2017
Chester has always wanted to become a service dog. When he fails his certification test, though, it seems that dream might never come true－until a family adopts him to be a companion for their ten-year-old son, Gus. But Gus acts so differently from anyone Chester has ever met. He never wants to pet Chester. Chester’s not sure how to help Gus, but he’s determined to figure it out and show he’s the right dog for the job.
Invisible Emmie
By Terri Libenson, published in 2017
The novel tells the story of two totally different little girls in a class — quiet, shy and artistic Emmie and popular, outgoing, athletic Katie — and how their lives unexpectedly connected one day, when an embarrassing note falls into the wrong hands. Emmie eventually learns to speak up for herself, realizing that being social isn’t as impossible as she thought.
Ocean Meets Sky
By Terry Fan, Eric Fan, published in 2018
“Young readers will be attracted.”— The Washington Post.
Finn lives by the sea and the sea lives by him. Every time he looks out of his window, it’s a constant reminder of the stories that his grandfather told him about the place where the ocean meets the sky. Finn’s grandfather has gone but Finn knows the perfect way to honor him. He’ll build his own ship and sail out to find this magical place himself! And when he arrives, maybe he’ll find something he didn’t know he was looking for.
1. What can we know about The Adventures of Amilya Rose: The Lie?| A．It’s the first children’s book in 2015. |
| B．It’s only for children’s fun. |
| C．It may be gained for free. |
| D．It’s mainly about teachers’ lessons. |
| A．The Adventures of Amilya Rose: The Lie | B．Ocean Meets Sky |
| C．Invisible Emmie | D．Chester and Gus |
| A．Chavonne D. Stewart and Jasmine Mills | B．Cammie McGovern |
| C．Terry Fan and Eric Fan | D．Terri Libenon |
9 . Can you imagine a world without music? Studies show that public schools across the country are cutting back on music classes to save money. Worse, some schools have never had music classes to begin with. But without them, students’ academic growth and emotional health could suffer. In fact, music classes are necessary for all students in schools.
Recent studies by Brown University have shown that students who received music education classes were better in math and reading skills than those without music classes. Another study by The College Board found that students taking music and art classes got higher points. Students’ academic success seems to depend on their taking part in music education.
Music programs in public schools also help to add to a student’s sense of pride and selfconfidence. Teens today have too many learning tasks. Besides, they have family problems, selfconfidence problems, relationship troubles, and choices about drugs and alcohol. All of these can stop academic success, but music education can help. A study by The Texas Commission on Drug and Alcohol Abuse found that students who took part in school music programs were less likely to turn to drugs. Music programs encourage students to work together to produce an excellent performance.
Music crosses language, class, cultural and political boundaries (界限). Music allows students from different countries to connect. For example, at a school talent show, a new Japanese student played a piano duet (二重奏) with an American classmate. Although they could not communicate verbally (口头上) , they were able to read the music in order to play the duet. Two students from different cultures worked as a team with selfconfidence and common purpose through music.
The gift of music is priceless. We need to be sure to have necessary music classes for all students. The world is losing its music, and putting music into schools is the first step to get it back.
1. The two studies seem to show that ________.| A．students with great success attended music lessons |
| B．not all students took part in music lessons |
| C．music plays an important role in students’ success |
| D．students having music classes are better in all lessons |
| A．Japan has a good international relationship with America |
| B．different cultures have different styles of music |
| C．music makes crosscountry communication possible |
| D．Japanese and American students are good at playing the piano |
| A．Music — a bridge to understanding |
| B．How to get music back |
| C．The importance of listening to music |
| D．Music education in schools |
10 . World’s best beaches:2020 Trip Advisor award winners
No.1 Clearwater Beach It lies in America,about a forty minute drive west of Tampa.It impresses travelers with two and a half miles of sugar white sand,crystal clear water and gentle Gulf wind.The beach offers calm,shallow water,making it an ideal playground for tourists. *Bargain hotel nearby:Pier House 60 Marina Hotel,from $293 per night *Airfare:As low as $71 round trip from ORD (Chicago) to TPA (Tampa) |
No.2 Siesta Beach Just south of Sarasota,Siesta Beach on Siesta Key is known for its eight-mile stretch of sugar fine,quartz white sand.It’s also a great spot for kids to collect seashells and sand dollars. *Bargain hotel nearby:Tropical Beach Resorts,from $295 per night *Airfare:As low as $238 round trip from EWR(Newark) to SRQ (Sarasota) |
No.3 Ka’anapali Beach Among the most visited beach in West Maui,this area is a popular spot for quiet relaxation or water sports.It’s also famous for the daily cliff diving ceremony off of the beach’s northernmost cliffs known as Black Rock. *Bargain hotel nearby:Lahaina Shores Beach Resort,from $289 per night *Airfare:As low as $382 round-trip from SFO (San Francisco) to OGG (Kahului) |
No.4 South Beach People watching is a great pastime in Miami’s South Beach,which draws celebrities and models.Travelers love the wide,fine,white sand-covered beaches as well as the surrounding area,known for wild nightlife and excellent restaurants. *Bargain hotel nearby:Room Mate Lord Balfour,from $264 per night *Great airfare:As low as$107 round-trip from LGA (New York) to MIA (Miami) |
1. Siesta Beach is different from other three beaches in that .
| A．tourists enjoy an exciting sport |
| B．fine sugar white sand covers it |
| C．many famous persons visit it |
| D．children have more great fun |
| A．$364. | B．$435. |
| C．$579. | D．$657. |
| A．Clearwater Beach. |
| B．Siesta Beach. |
| C．Ka’anapali Beach. |
| D．South Beach. |
