Genetics (遗传学) is the science of what makes you who you are. People who study genetics,called geneticists, learn about how parents pass on information through their genes (bits of information in your body that you cannot see) to their children. Is there anyone in the world like you? No! Your eye color,how tall you are and the size of your nose all come from the special information in your genes that makes you different from everyone else.
We get our genes from our parents. So genetics explains why you might look similar to your mother or brother and why you like some of the same things or speak in a similar way. Genes come in pairs-you get half from your mother and half from your father. We know that some genes are stronger than others. For example, the gene for brown eyes is stronger than the gene for blue eyes. So does it mean that if your parents both have brown eyes that you do too? Not always.
Because genes come in pairs, it's possible that someone with brown eyes has the gene for both brown eyes(B) and blue eyes (b). Look at the picture on the right that shows how the genes from Mum and Dad might be passed on to their children.
Why is genetics important? It's fun to think about which family members you are similar to and which genes you have, but studying genetics is also very important for our health. Some diseases are in our genes, so studying genetics can help us know if we might become ill in the future. It also helps doctors and scientists to know what medicine might help that disease.
1. What is the first paragraph mainly about?A.What genetics is. |
B.What geneticists learn about. |
C.How the size of your nose comes from. |
D.How parents pass on information to their children. |
A.Why you look like your friends. |
B.Why you are different from other people. |
C.Why parents pass on information to their children. |
D.Why many people in the world look exactly the same. |
A.Our genes come in pairs. |
B.Some genes are longer than others. |
C.People get their genes mainly from their mothers. |
D.Your parents both have brown eyes that you do too. |
A.Because it is very funny. | B.Because it is useful for scientists. |
C.Because it can help us fight diseases. | D.Because it can help us make medicine. |
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【推荐1】As the days get shorter and the cold weather rolls in, we all want to curl up in a blanket and sleep until spring rolls around. But making time to get outside in the sun, even when it's cold out, could have bigger mood benefits than you might realize. New research finds that sunlight exposure is by far the greatest weather-related factor determining mental health. In other words, more sunshine, more happiness.
For the study, a psychologist, a physicist and a statistician from BYU teamed up to compare daily environmental data from the university's Physics and Astronomy Weather Station with emotional health dataarchivedby day for 16,452 adult patients who were being treated at the university’s Counseling and Psychological Services. Other weather variables(可变因素) including temperature, pollution and rain were not found to have an impact on mental health.
“We were surprised that many of the weather and pollution variables we included in the study were not significantly related to patients' scores once we had accounted for sun time," said Dr. Mark Beecher, a professor of psychology at the university and the study's lead author.
Exposure to sunlight is a significant factor in seasonal affective disorder. Research has shown that the brain produces more of the feel-good neurotransmitter serotonin on sunny days than it does on darker days. What's more, lack of sunlight is linked with lower vitamin D levels, which in turn has been correlated with depression and low energy.
In addition to seeking professional help if you need it, taking a walk in the sun can help. Walking in nature is known to reduce stress, improve cognitive function, lighten the mood and even put the brain into a peaceful state.
1. According to the new research, what can make people happier?A.Less pollution. | B.Fewer rainy days. |
C.More cold weather. | D.More exposure to sunlight. |
A.composed | B.discussed |
C.recorded | D.adjusted |
A.They were as expected. |
B.They were surprising. |
C.They needed professional proof. |
D.They were not inclusive enough. |
A.To inform readers of a new study. |
B.To tell people a piece of good news. |
C.To introduce a new way to gain happiness. |
D.To explain the benefits of walking in nature. |
Courtesy (礼貌) is an art form that shows our moral character. China's history is one of a civilization (文明) with a highly developed sense of etiquette (礼仪) ; therefore, we should speak English as politely as possible when we go abroad.
Ordering meals
Asking for help
If we need to ask someone for help, we should say, “Excuse me, or Do you mind if I ask you something?”
Local people in other countries sometimes speak really fast, so it can be hard for us to catch all the words. In such a situation, we can say, “Pardon me?” to ask them to repeat what they said. In my opinion, saying “Can you please repeat that? I didn't follow.” is the politest way.
Refusing an invitation
Expressing disagreement
We can use sentences like “I see what you're saying, but I think...”,or “You could be right, but don't forget that...” or even, “Yes, that's true, but I'm not sure that...”
A.Can't catch what's been said? |
B.We should not ask our questions directly. |
C.Being polite when you order something is very important. |
D.Do you know some basic rules of answering the telephone? |
E.It is also important to know how to refuse someone’s invitation. |
F.“Please” and “thank you” go a long way when we speak to each other. |
G.These are great ways to express disagreement politely by being less direct. |
【推荐3】In a recent survey in the United Kingdom, elderly adults who joined weekly read-aloud groups reported better concentration and an improved ability to socialize.
The survey’s authors owed these improvements in large part to the “rich, varied diet of serious literature” that group members consumed, with fiction encouraging relaxation and calm, poetry developing focused concentration, and narratives of all sorts giving rise to thoughts, feelings, and memories.
The second-century Greek doctor Antyllus even prescribed daily recitation to his patients, recommending it as a kind health-giving nutrient and declaring “Epic verse is the best for one’s health.” Reading an epic poem might be a tall order, but in truth, almost any kind of reading to another person can be beneficial. That seems to be especially true for patients suffering from Alzheimer’s disease, according to a 2017 University of Liverpool study of 800,000 patients. “Reading a literary text together explores the power of reading as a cognitive (认知的) process, allowing readers a sense of subjective and shared experiences at the same time,” the study’s authors wrote.
We are not the only species to benefit from this kind of oral medicine. Dogs do, too, which is why, since 2014, volunteers have read to the animals under the group’s care. “I noticed that the dogs that were very fearful would slowly move forward to the front. They would appear to be listening, and they would become very relaxed. On the day I stopped by, a retired opera singer was reading the sci-fi thriller Logan’s Run to half a dozen dogs.”
Readers get rewards too. For Neil Bush, the late-life hospitalization of his famous parents, George H. W. Bush and Barbara Bush, became opportunities to repay a debt of gratitude. “When I was a kid, my mother would read to us,” he told a reporter in the spring of 2018. “And to read the story of their amazing life together has been a remarkable blessing to me, personally, as their son.”
1. Which aspect has been changed by reading to others?A.The calmness given by poems. | B.The way of having a healthy lifestyle. |
C.The communication between old people. | D.The ability to understand literature. |
A.An epic poem might be a tall order. |
B.Ancient doctors preferred the way. |
C.Patients could be completely cured by reading. |
D.The effects of treatment could be positive. |
A.Dogs served a lot in the study. |
B.Dogs are fearful while listening. |
C.The opera singer volunteered to help the dogs. |
D.Reading to dogs is also beneficial. |
A.Patients in the hospital must read to recover. |
B.Reading brought the warmth back to his family. |
C.Reading can pay off debts. |
D.Thankfulness should be expressed by reading. |
Susan, founder of a consulting firm in Chicago, interviewed 216 women and found that even though none of her questions asked directly about a parent favoring one child over another, about two-thirds of the women said there was a favored child. And they also remembered their experience when they were young. One of the women said, “My mother always liked my brother better, and he got to go to summer camp in 1968 and I didn’t.”
Plumez, who interviewed parents with both biological children and adoptive children for an adoption book in 2008, found that what matters most is whether your temperaments(性情) are pleasing. “In some cases, parents would say they felt closer to their adopted children,” she says, “Some parents like the children with characters similar to theirs. Two people who are shy and withdrawn might get along well, unless the shy parent doesn’t like that aspect of themselves and they try to push the naturally withdrawn child to be more extroverted.”
It could be a result of gender, birth order or how easy or difficult a child’s temperament may be, but a parent’s different treatment has far-reaching effects. Students have found that less-favored children may suffer emotionally, with decreased self-esteem and behavioral problems in childhood. Favoritism is a reason for the next generation not to like each other.
Experts say it is not realistic to say everyone should be treated equally, because no two people are the same and they relate differently to others.
“It does not mean that parent loves or likes one child more. It has to do with which one of them is independent,” says psychologist Laurie Kramer of the University of Illinois.
1. The study carried out by Susan shows that ______.
A.showing favoritism is common in many families |
B.most mothers like their sons better than their daughters |
C.only two-thirds of the women interviewed have more than a child |
D.it is a favoritism that leads to absence of harmony in most families |
A.independent | B.outgoing | C.clever | D.brave |
A.Favoritism is not beneficial to the development of children |
B.Parents’ favoritism to a certain child can’t be avoided in families |
C.Parents may be favoring one of their children and don’t realize it |
D.People are very much shaped by how they were treated by their parents |
A.Parents’ favoritism can affect children deeply |
B.Why do parents show favoritism to children? |
C.Parents should give attention to all their children |
D.Building a harmonious family is important to children |
【推荐2】It is 7 a.m. and the alarm is going off. You know you have to be out of bed to catch the school bus. But the desire to stay in the bed is so strong. You believe that your body is fixed in the bed.
During adolescence, the body goes through many changes, which includes a change in sleep patterns. According to researchers, this is because of a hormone called melatonin that is secreted by the pineal gland — a tiny structure deep inside the brain. Melatonin is very important. It can control the body’s natural day-night rhythm and cause a person to become sleepy by lowering his or her body’s core temperature.
In teens, melatonin is secreted much later in the evening and continues to increase throughout the night. This makes it difficult for teens to fall asleep early as they did in their younger years. Likewise, the effect of melatonin continues until much later in the morning, making it hard for them to wake up early.
An American National Sleep Foundation study found that at least one in four teens are tired and fall asleep in school at least once a week. Sleep is food for the brain. During sleep, important body functions and brain activities happen. Staying up late can be harmful and even deadly — especially for those who drive. A slow brain makes it difficult to focus and can hurt grades at school. Since sleep-deprived children tend to eat more carbs, they are more likely to suffer from depression.
The American Association of Pediatrics (AAP) recommends that middle and high schools should start later — not before 8:30 a.m. This should give teens some more time to sleep in and eat breakfast. As a result, their brains can receive new information in a more efficient manner. In fact, AAP suggests that letting teens sleep in late during school days can lead to overall benefits for teens. However, starting school later means a later end time too. Will that affect afterschool activities?
1. What does the underlined word “this” in Paragraph 2 refer to?A.The students fall asleep early. | B.The shifts of the sleeping patterns. |
C.The pineal gland secretes melatonin. | D.The adolescents wake up early. |
A.Its formation. | B.Its temperature. | C.Its role. | D.Its potential. |
A.The length of sleep can influence teenagers’ brain health. |
B.The early secretion of melatonin makes teenagers sleep late. |
C.The most of teenagers in America always go to sleep late. |
D.The late secretion of melatonin makes teenagers pay more attention in class. |
A.Students will eat more carbs. | B.Students will learn better and faster. |
C.Students will get up earlier than before. | D.Students will have more afterschool activities. |
【推荐3】In choosing a friend, one should be very careful. A good friend can help you study. You can have fun together and make each other happy. Sometimes you will meet fairweather friends. They will be with you as long as you have money or luck,but when you are down, they will run away. How do I know when I have found a good friend? I look for certain qualities of character,especially understanding, honesty and reliability(可靠).
Above all else, I look for understanding in a friend. A good friend tries to understand how another person is feeling. He is not quick to judge. Instead, he tries to learn from others. He puts himself in the other person’s place, and he tries to think of ways to be helpful. He is also a good listener.
At the same time, however, a good friend is honest. He does not look for faults in others. He notices their good points. In short, a friend will try to understand me and accept me.
Another quality of a friend is reliability. I can always depend on a good friend. If he tells me he will meet me somewhere at a certain time, I can be sure that he will be there. If I need a favor,he will do his best to help me. If I am in trouble, he will not run away from me.
There is a fourth quality that makes a friend special. A special friend is someone with whom we can have fun. We should enjoy our lives, and we would enjoy our friendship. That is why I especially like friends who are fun to be with. A good friend likes the same things I like. We share experience and learn from each other. A good friend has a good sense of humor too. He likes to laugh with me. That is how we share in the joy of being friends. And I know that he is looking for the same quality in me.
When I meet someone who is reliable, honest, and understanding,I know I’ve found a friend!
1. Which of the following qualities the writer thinks is the most important in choosing a friend?A.Understanding. | B.Honesty. | C.Reliability. | D.A sense of humor. |
A.they will give you all that they have when you need help |
B.you will be refused when you get into trouble |
C.you can be sure that you get real friends |
D.you will become rich |
A.the qualities of a friend |
B.where to choose friends |
C.how to get along with friends |
D.the importance of having a friend |
A.Three. | B.Four. | C.Five. | D.Six. |
【推荐1】The Garden of Dreams was the peaceful site in Kathmandu, Nepal. The four-acre Garden of Dreams was designed by landscape architect Kishore Narshingh. Most especially, the site was characterized by six pavilions, which symbolized the “six seasons” of Nepal: spring, early summer, the summer monsoon season, early autumn, late autumn, and winter. In its most powerful time, the garden was considered one of the most remarkable feats of landscape design in the country.
Today, visitors will only find three pavilions on just over an acre of land, but the 74,000 square-foot space remains a fresh and green attraction. Through the garden’s original gates are pretty and old-fashioned fountains and ponds, isolated gardens of varying sizes, and the Kaiser Café Restaurant & Bar. Pathways are lined with grass, trees, and flowers from all over the world.
While the Garden of Dreams has been transformed into a public space, it remains a quiet and peaceful escape in the center of Kathmandu, and a popular hangout for sunbathers, wanderers, residents, and tourists alike.
Know Before You Go
The Garden of Dreams is open daily from 9 a.m. until 10 p.m. It’s located in the Kaiser Mahal complex in the busy Thamel neighborhood of Kathmandu. Admission to the garden costs Rs. 200 per person for tourists and Rs. 100 for Nepali residents. Wifi is available throughout the garden for Rs. 50 an hour.
1. Which item can tourists enjoy in the Garden of Dreams now?A.Six seasons there. |
B.A feast with plentiful meals. |
C.Beautiful gardens of different sizes. |
D.Fishing in the pretty and old-fashioned ponds. |
A.Rs.350. | B.Rs.300. | C.Rs.200. | D.Rs.100. |
A.A Trip to Nepal |
B.The Garden of Dreams |
C.Nepal, A Beautiful Country |
D.A Country with Six Seasons |
【推荐2】As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without any living things.
Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight, Very often the effects of pollution are not noticed for many months or years because the first organisms(生物体)to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it’s not until dead fish and water birds are seen at the river’s edge or on the seashore that people realize what is happening.
Where do the substances which pollute the water come from? There are two main sources of sewage(污水)and industrial waste . As more detergent(洗涤剂)is used in the home, so more of it is finally put into our rivers, lakes and seas . Detergents harm water birds, dissolving the natural substances which keep their feathers water - proof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful as there are many highly poisonous things in it, such as copper and lead(铅).
So, if we want to stop this pollution, the answer is simple: sewage and industrial waste must be made clear before flowing into the water . It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.
1. Pollution of water is noticed________.A.when the first organisms are affected |
B.when a good many fish and birds die |
C.when poisonous things are poured into water |
D.as soon as the balance of nature is destroyed |
A.water | B.fish |
C.poison | D.oxygen |
A.Organisms |
B.Plants and plankton in the water |
C.Waste water from cities |
D.Industrial waste made clear before flowing into the water. |
A.realize the serious situation clearly |
B.put oxygen into the river |
C.make the waste material harmless before flowing into the water |
D.make special room in the sea for our rubbish |
【推荐3】The Olympic Games are seen as the greatest test of an athlete’s ability and are supposed to celebrate the spirit of fair play. But in fact, sportsmen have been using drugs to cheat their way to victory since the Games first began.
In the early years, athletes ate mushrooms(蘑菇)and plant seeds to improve their performance. Nowadays, this kind of cheating has a name doping(服用兴奋剂).
Just last month, Britain’s top sprinter(赛跑选手) Dwain Chambers and several American athletes tested positive(呈阳性)for the drug THG. Until a coach secretly gave a sample of THG to scientists, no one knew how to test for it.
“We’re like cops(警察)chasing criminals—athletes are always adapting and looking for areas we haven’t investigated,” said Jacquew de Ceaurriz, a French anti-doping expert.
Since the first drugs test was carried out at the 1968 Olympics in Mexico City, many cheats have been caught out. The most famous case in history is that of Canadian sprinter Ben Johnson. He broke the 100 meters world record in winning gold at the 1988 Seoul(汉城)Olympics. But days later, he tested positive for drug use, lost his gold medal and was banned from the sport. Five years later, he returned to action—only to be found positive again and banned forever.
China has also had problems with drug cheats. At the 1994 Asian Games, 11 Chinese athletes—seven of them swimmers—tested positive for banned drugs. Sports organizations promised that cheating on this scale would not happen again.
Experts are also worried that doping can damage a person’s health. It is believed to increase the risk of liver and kidney(肝肾)diseases, and women may experience reproductive(生育) problems. As long as they can stay ahead of the scientists, it is unlikely the cheats will stop. But experts say there is a limit to what can be achieved and that athletes will not be able to change their bodies using gene(基因)technology.
“For the moment, genetic doping does not exist,” said de Ceaurriz. “Even in 10 or 15 years it will not be done easily—the scientific community(界)will not let it happen.”
1. Which of the following is not the way that some athletes cheat to their better sports achievements?A.Eating mushrooms. | B.Taking drug THG. |
C.Taking genetic doping. | D.Eating plant seeds. |
A.Two. | B.Four. |
C.Six. | D.Eight. |
A.scientists get a lot of information about drugs before the athletes take doping |
B.taking doping will never happen again because of the serious test |
C.few athletes used drug cheats before the first drugs test was carried out at the 1968 Olympics |
D.problems with drug cheats are still serious though they are severely tested |
A.Many police are sent to chase criminals of taking doping during the Olympic Games. |
B.The drug test was carried out until the 1968 Olympics. |
C.There is the possibility that women athletes taking doping will give no birth to a child. |
D.Ben Johnson was banned from sports forever for being tested positive for drug use at the 1988 Seoul Olympics. |
【推荐1】Tall, taller, tallest. For much of the 20th century, New York City and Chicago competed to build the world’s tallest skyscrapers. Other cities around the world watched the race between these two cities. From 1913 to 1930 New York’s Woolworth Building was the tallest (241m). From 1931 to 1972, the Empire State Building in New York was the tallest building in the world (381m). Then Chicago built its own Sears Tower, which stood as the tallest building in the world (442m) for 24 years. Until the 1990s, the United States chimed the tallest structures on earth. That is no longer true. Today the tallest buildings are in Asia.
Skyscrapers were originally built by wealthy companies as symbols of their success and power. That is still true today. But skyscrapers are also symbols of local and national pride. Countries compete to build the tallest structure. Since 1998, the race to be the tallest has progressed quickly. Petronas Twin Towers was completed in Kuala, Lumpur in 1997 (452m). Just one year later, Shanghai completed the Jin Mao Tower (421m). On September 14, 2007, the Shanghai World Financial Center was topped out and is 492m, making it the 8th tallest building in the world. And then Dubai in the Middle East has entered the race. Burj Khalifa is a skyscraper in Dubai, United Arab Emirates. It is the tallest building in the world, standing at 829. 8m.
1. In 1920, the world’s tallest building was the ?A.Sears Tower. | B.Woolworth Building. |
C.Empire State Building. | D.Petronas Twin Towers. |
A.Because they want to be known by the world. |
B.Because they’re symbols of their success and power. |
C.Because they want to make money by building them. |
D.Because they can represent the spirits of the companies. |
A.Skyscrapers are a source of pride. |
B.All cities want to have the tallest buildings. |
C.Asian cities can afford to build skyscrapers. |
D.People are eager to have a better living condition. |
A.Designing skyscrapers. | B.Finding jobs for architects. |
C.Comparing American and Asian cities. | D.Competing to build the tallest skyscrapers. |
【推荐2】BIG BUS TOURS-HOP-ON HOP-OFF TOURS
Big Bus Welcome Center 7127th Ave. Between 47th & 48th St.
TELEPHONE
212-685-8687
FREE ENTRY WITH THE NEW YORK PASS **SAVE﹩59.00
Normal Entry Price: Adult﹩59.00
Normal Entry Price: Child﹩49.00
The open-top Big Bus sightseeing tour is the most enjoyable and convenient way to see New York! You’ll see famous landmarks such as the iconic Empire State Building to the new One World Trade Center. Throughout the tour, you can learn about the city’s history from our entertaining and informative live guides and recorded commentary. You can hop-on and hop-off at any of the Big Bus stops to explore and visit NYC’s tourist attractions such as the American Museum of Natural History and the Metropolitan Museum of Art.
The New York Pass grants you a free Classic Ticket valid (有效) for 1 day on the Uptown, Downtown & Midtown Loops. Tickets must be collected from one of the Big Bus Centers, and tickets cannot be issued on the bus. All tickets redeemed (补换) or purchased after 3 pm are extended into the next day.
TOUR HOURS:
Downtown Loop has daily departures from 8 am to 5 pm from November to March and 8 am to 6 pm from April to October.
Uptown Loop has daily departures from 9 am to 5 pm from November to March and 9 am to 6 pm from April to October.
Get the Big Bus Hop on Hop off Route Map — CLICK HERE
Click herefor more information about Big Bus Tours.
It really is that easy — See for yourself how this works.
Or check out all 90+ New York City Attractionswhere you get free entry with New York Pass.
1. Who helps tourists with the city’s history during the trip?A.Bus drivers. | B.Policemen. | C.Volunteers. | D.Live guides. |
A.tourists can get on and off the bus with ease |
B.the open-top Big Bus sightseeing tour is the most expensive way to see New York |
C.Big Bus Welcome Center is Between 37th & 38th St. |
D.free Classic Ticket can be issued on the bus |
A.Staying wherever the tourist likes. |
B.Choosing different restaurants to eat. |
C.Getting a free Classic Ticket. |
D.Saving much time for buying stuff. |
A.an application form | B.a history book |
C.a newspaper | D.a website |
【推荐3】The Internet has led to a huge increase in credit card fraud. Your card information could even be for sale in an illegal website.
Websites offering cheap goods and services should be regarded with care.
Online shoppers who enter their credit-card information may never receive the goods they thought they bought. The thieves then go shopping with your card number-or sell the information over the Internet. Computers hackers have broken down security, systems, raising questions about the safety of cardholder information. Several months ago, 25,000 customers of CD Universe, an on-line music retailer (零售商), were not lucky. Their names, addresses and credit card numbers were posted on a website after the retailer refused to pay US $157,828 to get back the information.
Credit card firms are now fighting against online fraud. Mastercard is working on plans for web-only credit card, with a lower credit limit. The card could be used only for shopping online. However, there are a few simple steps you can take to keep from being cheated.
Ask about your credit card firm’s online rules: under British law, cardholders have to pay the first US $78 of any fraudulent spending.
And shop only at secure sites; send your credit card information only if the website offers advanced secure system.
If the security is in place, a letter will appear in the bottom right-hand corner of your screen. The website address may also start https://-the extra “s” stands for secure. If in doubt, give your credit card information over the telephone.
Keep your password safe: Most online sites require a user name and password before placing an order. Treat your passwords with care.
1. What is the meaning of “fraud”?A.Cheating. | B.Sale. | C.Payment. | D.Safety. |
A.Four | B.Three | C.Five. | D.Six. |
A.Order the TV set at once. | B.Tell the site your password and buy the TV set for you. |
C.Do not buy the TV set on this site. | D.E-mail the site your credit card information. |