While orcas are known for their well-designed joint attacks on unsuspecting oceanic animals, they have never posed a threat to humans. However, since July 2020, the normally social animals have been intentionally attacking sailboats off the coasts of Spain. The unusual hostility is puzzling scientists worldwide.
The strange behavior first surfaced on July 29, when Victoria Morris, a biology graduate, noticed nine orcas circling the 46 foot boat she was crewing near the shores of the Strait of Gibraltar. She was initially cheerful to see the friendly animals, with which she had numerous encounters while teaching sailing in New Zealand. However, that changed when the orcas started striking the boat repeatedly for almost an hour. “They almost turned the boat over and the deafening noise was terrifying,” she said.
The continuous attacks broke the boat's automatic rudder, leaving the boat disabled. Spanish biologist Rocio Espada says, “It is crazy. I've seen these whales grow from babies. I know their life stories. I've never seen or heard of attacks.”
Since then, over 30 more similar incidents have been reported. Some researchers believe the orcas' unusual behavior could be a result of the overfishing of tuna—orcas' primary food source—which has left the area's orcas starving and unable to feed their babies. “I saw orcas look at boats carrying fish. The intelligent animals may know humans are somehow related to food shortages,” says Ken Balcomb, an American scientist.
However, Alfredo Lopez a Spanish biology professor, thinks the attacks were preventative measures the orcas adopted to protect themselves against boat injuries. The researcher came to this conclusion after looking at the footage of a few incidents filmed on the scene and noticing that two of the young orcas involved had serious injuries. The scientist wasn't sure if the orcas were hurt during or before the recent boat encounters. Lopez said, “Our interpretation is that they don't have the slightest intention of attacking people.” Hopefully, the experts will find a way to restore the harmony between the animals and humans soon.
1. What does the underlined word “hostility” in paragraph 1 mean?| A．Unfriendliness. | B．Defence. | C．Cooperation. | D．Impatience. |
| A．Her major led her to anticipate orcas' intense attacks. |
| B．She rarely spotted orcas when working as a sailing coach. |
| C．Her joy gave way to fear after the orcas began attacking the boat. |
| D．She was doing research on the shore when she caught sight of nine orcas. |
| A．Predictable. | B．Abnormal. | C．Unavoidable. | D．Natural. |
| A．Orcas frequently get hurt by boats. | B．Orcas enjoy playing tricks on humans. |
| C．Orcas are punishing humans for overfishing. | D．Orcas attack boats to safeguard against dangers. |
相似题推荐
【推荐1】A group of scientists trained dogs to detect(发现)a crop disease called citrus greening. The disease has affected orange, lemon and grapefruit trees in the American states of Florida, California and Texas. The dogs can detect the disease weeks to years before it appears on tree leaves and roots, the researchers report. Using dogs is also faster, less costly and more exact than having people collect hundreds of leaves for lab analysis.
Timothy Gottwald is a researcher in the study. He said, “This technology is thousands of years old — the dog's nose. We’ve just trained dogs to hunt new prey：the bacteria that cause a very damaging crop disease.”
Citrus greening is caused by a kind of bacteria that are spread by a tiny insect that feeds on the leaves and stems of citrus trees. Once a tree is infected(感染)，there is' no cure. The disease has also hurt citrus crops in Central and South America and Asia. In one experiment involving grapefruit trees in Texas, trained dogs were correct 95 percent of the time in telling the difference between newly infected trees and healthy ones. “The earlier you detect the disease, the better chance you have at stopping healthy trees being infected by removing infected ones,” Gottwald said.
Professor Matteo Garbelotto says the new research shows that dogs can detect an infection well before present methods. He has been involved in similar research but had no part in the new study.
Laura Sims is a plant scientist. She praised the steps taken to find out if the dogs were detecting the bacteria itself or a plant's reaction to an infection. To do that, the researchers infected different kinds of unrelated plants with the bacteria in a laboratory. The dogs were still able to pick out the infected plants.
Gottwald said, "You've seen dogs working in airports, detecting drugs and explosives. Maybe soon you will see them working on more farms."
1. What does the text say about citrus greening?| A．It mainly damages tree branches. |
| B．It' s impossible to detect at an early stage. |
| C．Dogs can better detect it than humans. |
| D．Humans have to analyze tree roots to detect it. |
| A．By tasting. | B．By touching. |
| C．By observing. | D．By Sniffing. |
| A．help infected trees to recover | B．keep it from spreading further |
| C．improve the quality of fruit. | D．better protect infected trees |
| A．Dogs will take the place of humans to conduct risky jobs. |
| B．Trained dogs make no mistakes in citrus greening detection. |
| C．Dogs use plants' reaction to an infection to help with their detection. |
| D．Using dogs for citrus greening detection will be more widespread. |
【推荐2】As consumers, especially young ones, become more eco﹣conscious, services are popping up to reduce wastefulness in the flower industry, extending the life of old bouquets（花束） that were previously thrown away the day after a big event.
Considering that the floral（花的）gifting market is expected to reach ﹩16 billion in revenue by 2023, buying from eco﹣friendly businesses can have a huge impact. According to one estimate, the roughly 100 million roses grown for a typical Valentine's Day in the U. S. produce about 9,000 metric tons of carbon dioxide emissions.
“When you realize what the supply chain looks like and the number of hands that touch these flowers. and then they're only appreciated for a couple of hours, it's kind of disgusting when you think about the amount of resources that go into it,” says Jennifer Grove, founder of New York City﹣based flower service Repeat Roses.
While working as a wedding designer and corporate planner, Grove often oversaw the design of floral arrangements, only to see those creations thrown away within a few hours. In 2014 she founded Repeat Roses to make it easier for luxury clients to donate used bouquets. Like a traditional floral service, the company sells high﹣end floral decorations for weddings or social events, but it then recycles or composts（堆肥） them.
If a customer chooses the unique repurposing（改变用途） service, a Repeat Roses team can remove the arrangements from the event and then restyle the flowers into smaller bouquets to donate to hospitals, nursing homes and family shelters. If there's a charity that holds a special place in a customer's heart, the team will ensure the blooms are sent there. “It's a logistics business, and we're trying to make sure we are strategic in where we play matchmaker,” Grove says. When the charities are finished with the flowers, Repeat Roses also picks them back up and composts them. The altruism isn't free﹣prices start at ﹩1,750 for the removal and repurposing service to account for the transportation and labor costs. If you're not willing to spend that much, the company will still compost the flowers from your event instead of sending them to a landfill.
Through these two methods, Repeat Roses estimates it has diverted more than 98 tons of waste from landfills and delivered almost 53,000 floral arrangements to people in need. Although Repeat Roses is a for﹣profit business, the flower repurposing itself is a tax write﹣off for the client. As the fair market value of a client's donated flowers is what's used for the charitable tax credit and is eligible for deduction, Repeat Roses ensures that the beneficiary sends you an acknowledgement letter including details of your donation.
1. Jennifer Grove founded Repeat Roses in order to do the following except .| A．avoid the waste of flowers |
| B．reduce the pollution to the environment |
| C．earn money by selling used flowers |
| D．help some customers do charity work |
| A．the company’s composting the flowers |
| B．the customers’ donating flowers to people in need |
| C．the reception of the donation by the people in need |
| D．the transportation of the flowers to a landfill |
| A．To get a discount when buying flowers. |
| B．To feel fulfilled because of donation. |
| C．To get a tax reduction. |
| D．To receive a letter of compliment. |
| A．a creative way of making money |
| B．a green trend of waste utilization |
| C．a way to cut the emission of carbon dioxide |
| D．a company devoted to charity |
【推荐3】Migratory (迁移的) birds are specially adapted to find their way over extreme distances. Now, the new research of Kaspar Delhey and other researchers has discovered an unexpected way that migratory birds keep their cool during such backbreaking journeys: lighter-colored feathers (羽毛).
“We found across nearly all species of birds, migratory species tend to be lighter colored than non-migratory species,” said Delhey. “We think that lighter feather coloration is selected in migratory species because it reduces the risk of overheating when exposed to sunshine. Lighter surfaces absorb less heat than darker ones, as anybody wearing dark clothes on a sunny day can demonstrate! This would be particularly important for long-distance migrants that undertake extensive flights during which they cannot stop to rest in the shade.”
Delhey and his coworkers had been studying the effects of climate on bird coloration. Their earlier studies showed that, in general, lighter colored birds are found where temperatures are high and there is little shade. That’s in part because the birds’ lighter feathers help to keep them cooler in the hot sun. Then the researchers came across studies by others showing that some birds fly higher during the day compared to at night.
“Because flying higher is likely costly, these changes require an explanation,” Delhey says. “One possibility was that flying higher, where it is colder, would offset the heat absorbed by the feathers when the sun was shining.”
If so, they realized, another way to reduce the risk of overheating would be to absorb less solar radiation in the first place. It raised a question: have migratory species evolved (进化) lighter feathers?
To find out, they did much research. Their findings show bird species get increasingly lighter as they migrate more. So, resident birds tend to be darker than short-distance migrants. Short-distance migrants are darker than bird species that travel farther. Delhey said the effect suited different types of birds. The same held true in waterbirds and ground-living birds, too.
The findings are another reminder of the important role of temperature and climate factors more broadly in the evolution of shaping the coloration of animals. They also help better understand the impacts of global warming and underlying adaptive evolutionary responses.
1. Why is “dark clothes” mentioned in paragraph 2?| A．To present a fact. | B．To analyze a reason. |
| C．To clarify a point. | D．To make a comparison. |
| A．Cancel out. | B．Add to. | C．Give rise to. | D．Take advantage of. |
| A．The habitats of migratory birds. |
| B．The categories of migratory birds. |
| C．A flying pattern of migratory birds. |
| D．A physical characteristic of migratory birds. |
| A．Entertainment. | B．Science. | C．Travel. | D．Education. |
【推荐1】I was cutting up lettuce (生菜) in the kitchen when I suddenly remembered watching a video about putting the lettuce stub (残余部分) in water to grow a whole new vegetable. So I took out a wide-mouthed mug (大杯) and placed the stub into it, gave it a little water, and placed it by the window.
On a snowy morning, I noticed the first sign. A first small leaf from its heart spread out. A tiny green flag of hope. Beaten, but not defeated. Within days, it was impossible to see the cuts where I had removed the leaves. The growth was explosive. And when I lifted the blossoming head out of the mug, tiny root threads fell down, seeking for the earth. What is growing here? Lettuce or hope?
If I were a lettuce in a similar condition, I’d want to doubtfully assess where I found myself before being devoted to full growth. Yet for this lettuce, my inadequate offering of water and a place by a window was enough for it to decide to reclaim itself again. It grew in a mug of water, in faith. This is the heart of this lettuce: alive, strong and fearless. It deserved a name. I decided to call it Monty.
Monty wanted to grow, as we all do. I think I gave him a little love and freedom. Those two ingredients were all he needed to return to himself. I see joy in this lettuce. The return to self is always an expression of joy, which is life itself. With the right ingredients, this is the tendency of all living things.
Monty still lives in a mug, but I’m going to transplant him outside. He deserves to become his full self. The only problem I see now is my capacity to support Monty. I hope I have enough of a green finger.
I’m surprised to find myself where I am. Maybe Monty is, too. I have the same choice as he does: give in and decay (腐烂), or start again. The prospect of starting again is discouraging. But my lettuce-friend, Monty, leads the way. I can only hope to be as brave.
1. Why did the author put the stub in water?| A．To hope that it would grow. | B．To decorate the nice mug. |
| C．To conduct an experiment. | D．To remove his bad mood. |
| A．The remaining stub. | B．The small leaf. |
| C．The disappearing cuts. | D．The tiny root threads. |
| A．Hesitant. | B．Fearless. | C．Confident. | D．Annoyed. |
| A．Enjoy your own life to the fullest. | B．Believe in yourself when in trouble. |
| C．Never be afraid to restart yourself. | D．Give freedom to the heart in a way. |
【推荐2】When you were trying to figure out what to buy for the environmentalist on your holiday list, fur probably didn’t cross your mind. But some ecologists and fashion (时装) enthusiasts are trying to bring back the market for fur made from nutria (海狸鼠).
Unusual fashion shows in New Orleans and Brooklyn have (showcased) nutria fur made into clothes in different styles. “It sounds crazy to talk about guilt-free fur — unless you understand that the nutria are destroying vast wetlands every year”, says Cree McCree, project director of Righteous Fur.
Nutria were brought there from Argentina by fur farmers and let go into the wild. “The ecosystem down there can’t handle this non-native species (物种). It’s destroying the environment. It’s them or us.” says Michael Massimi, an expert in this field.
The fur trade kept nutria check for decades, but when the market for nutria collapsed in the late 1980s, the cat-sized animals multiplied like crazy.
Biologist Edmond Mouton runs the nutria control program for Louisiana. He says it’s not easy to convince people that nutria fur is green, but he has no doubt about it. Hunters bring in more than 300,000 nutria tails a year, so part of Mouton’s job these days is trying to promote fur.
Then there’s Righteous Fur and its unusual fashion. Morgan says, “To give people a guilt-free option that they can wear without someone throwing paint on them — I think that’s going to be a massive thing, at least here in New York.” Designer Jennifer Anderson admits it took her a while to come around to the opinion that using nutria fur for her creations is morally acceptable. She trying to come up with a label to attach to nutria fashions to show it is eco-friendly.
1. What is the purpose of the fashion shows in New Orleans and Brooklyn?| A．To promote guilt-free fur. |
| B．To expand the fashion market. |
| C．To introduce a new brand. |
| D．To celebrate a winter holiday. |
| A．Nutria damage the ecosystem seriously. |
| B．Nutria are an endangered species. |
| C．Nutria hurt local cat-sized animals. |
| D．Nutria are illegally hunted. |
| A．It’s formal. | B．It’s risky. | C．It’s harmful. | D．It’s traditional. |
A sit-spot routine is a practice that naturalists use to learn more about the world around them. You might have other reasons for adopting the practice, but following the advice of these experienced sit-spotters for selecting your location will help you create a routine you can stick to.
It needs to be close to your home.
Most locations you choose will have at least a handful of birds hanging around if not more wildlife to watch.
It needs to be safe.
Ideally, your sit-spot will be apart from others so that you can have some time to sit peace and get comfortable without distraction from other people.
There are ideal sit-spot locations that wrap you entirely in nature for hundreds of yards, and there are practical sit-spot locations like a bench in the comer of a city park.
| A．It can even be in your backyard. |
| B．It needs to have some animal activity. |
| C．Notice how they're using the landscape. |
| D．But in this loneliness, you probably feel unsafe. |
| E．It's wonderful to just sit and observe what's around you. |
| F．It's more important to have a practical location than an ideal one. |
| G．This closeness is what will help to make visiting your spot a routine. |
【推荐1】Steve Davies, a 23-year-old board designer in Wales, is developing a surfboard made from mycelia (菌丝体) instead of plastic.
A 2022 report showed that more than 400, 000 boards are made each year. The global market for surfboards reached $2.2 billion in 2020 and is expected to reach $3.2 billion by 2027. But about 80% of boards are made from plastic, which can take hundreds of years to break down. This will be a serious problem for the environment as the market grows.
“And even when it does break down, it can go into fish’s ecosystem (生态系统), which means that humans will end up eating this plastic,” Davies said.
Davies made his first surfboard in 2020, but the experience showed him many harmful materials were produced in making each board. During his final year at university, he started looking into mycelia and making his beloved sport more environment-friendly.
“My family owns a farm with horses, so I was quickly able to collect substrate material (基料) in the form of horse bedding, to allow the mycelia to grow in,” Davies explained. “This gave me an idea to start a surfboard business—growing surfboards on a farm near the beach and using waste materials from that very same farm, reducing the transport of materials, and therefore reducing carbon (碳) given out into the environment.”
“In the right conditions, we will grow a mycelium board in around 21 days,” Davies said. “The dream would be to make it the new standard. Connecting with nature would be the new design rules and that would be really cool. We’re using the sea and we should give back to the sea.”
1. What do the numbers in Paragraph 2 mainly show?| A．Going surfing costs a lot of money. | B．Surfing is popular with young people. |
| C．Designing surfboards is a good business. | D．Making eco-friendly surfboards is necessary. |
| A．To explain a rule. | B．To present a reason. |
| C．To make a comparison. | D．To share an experience. |
| A．Why Davies loved to design surfboards. |
| B．What made Davies’ surfboard business possible. |
| C．Why Davies wanted to study mycelia at university. |
| D．How Davies collected substrate material to make surfboards. |
| A．He supports environment-friendly products. | B．He hopes to succeed in selling surfboards. |
| C．He loves to get designing ideas from sea. | D．He dreams of creating cooler surfboards. |
【推荐2】Artworks get dirty. Art that has been around for centuries gets even dirtier. If any art is cleaned too often or with some harmful chemical materials, it can be ruined in an instant. In Italy, some scientists were tasked with cleaning status by Michelangelo at the Medici Chapels. They knew that just using soap and water wasn’t going to work because there were too many layers of dirt on them. So, what did they do? They made bacteria, which have traditionally been viewed as a threat to art, do the dirty work.
Michelangelo’s marble statues have been stained since the 16th century. Experts could not use a common chemical cleaner because it would easily cause great damage to or even destroy the details of the valuable pieces. Luckily, scientists developed a substance with bacteria that could eliminate the dirt without damaging the marble. The scientists tested several kinds of bacteria on small pieces of marble before finding the one that worked best to swallow the dirt. After seeing positive effects, they later applied the bacteria to whole statues. In the end, the substance turned out to be very effective. It is now considered the best way to get such statues to look new again.
After the special treatment, the statues began to glow again and visitors were impressed when admiring them. While the works will never look exactly the same as they did 500 years ago when they were first made and brand new, at least they now look much better.
1. Why weren’t water and soap used to clean the statues?| A．Because the artworks could fade. |
| B．Because the statues might be broken. |
| C．Because the stain was too old to clean up. |
| D．Because the material was too fragile to clean. |
| A．Eat away. | B．Tidy up. | C．Blow away. | D．Wrap up. |
| A．The statues were thoroughly cleaned. |
| B．Some bacteria are the “natural enemies” of dust. |
| C．The cleaned artworks are identical to what they used to be. |
| D．The cultivated bacterium is the best cleaner to the artworks. |
| A．A Special Substance Works Best on Marble. |
| B．A New Cleaning Bacterium Catches Our Eye. |
| C．Bacteria Rescue Priceless Works of Italian Art. |
| D．Ancient Italian Artworks Take on a New Look. |
【推荐3】The dark days of the Depression saw an increased demand for stories that excite children in new ways and support them in processing difficult emotions. The features of personalized books meet this need well. With personalized Loss Books, children read about losing a family member. With personalized Me and My Pet Books, children read about how they first met their dogs or cats. Identified as the main driver of the rapidly growing interactive children’s book market, personalized books are far from a gimmick (噱头).
Personalized books are printed or digital books that have been tailored to the needs of a specific child. They follow a simple principle: the publisher provides the users with a pattern, which parents populate with children’s data. Thanks to the advanced print-on-demand possibilities of small-scale publishers, it’s not difficult to create a personalized version of any story.
Publishers claim that personalized books teach children empathy (同理心) and encourage love for reading. Now, you might think that it is surely what all parents and teachers want, so should we replace all books with personalized stories?
Recent observational studies confirmed publishers’ claim that children are highly engaged and motivated to read personalized books. However, in a recent study, we compared children’s understanding of the moral of a story and its application to their lives after they read a personalized, non-personalized or control story. Although children who read personalized stories had more detailed retellings, there was no other difference between the three groups.
This could be because the differences among the children were higher than the effect of personalization. Studies with personalized books are too few for us to know for sure.
Besides, while personal stories are often used in therapeutic (治疗性的) practice or in children with special educational needs, personalized stories are a new writing style, raising many open questions. The misuse of children’s personal data and the moral questions concerning diversity make one wonder how “personalized” the books actually are. The other key point lies in directing children’s focus towards the other. Meanwhile, experts point out that given the increased focus on personalized learning during the gloomy days and the need to customize children’s reading experiences, the rising trend of personalized books will continue.
1. What can we learn about personalized books?| A．They are mainly in digital form. | B．They are created by young writers. |
| C．They are popular among children. | D．They are highly praised by teachers. |
| A．The varieties of personalized stories need expanding. |
| B．The effects of personalized stories need further study. |
| C．Personalized stories build up children’s sense of justice. |
| D．Personalized stories help children apply what they learn. |
| A．Concerned. | B．Critical. |
| C．Positive. | D．Objective. |
| A．Personalized Books: a Trick or a Treat |
| B．How Personalized Books Benefit Children |
| C．Personalized Books: a Must or an Option |
| D．How Personalized Books Meet Special Needs |
【推荐1】If you'd rather eat out on Thanksgiving or order the meal to go,you have no shortage of options. Here are some Chicago restaurants celebrating the holiday with a variety of dishes on offer.
Cyrano's Bistrot and Wine Bar, 546N.Wells
Go French for Thanksgiving，with Cyrano's sixcourse togo menu. It's packed with four appetizers, including ratatouille and lamb rillettes; four vegetable sides, including potato Lyonnaise; pumpkin soup; a choice of turkey，duck or chicken; a cheese plate，and desserts also included；reheating instructions. The cost is $39 a person. To order，call(312) 4670546.
Fairmont Chicago, 200N. Columbus
The hotel is going retro(怀旧) and green this year with its Thanksgiving togo menu，from organic green bean casserole(砂锅) made with mushroom soup to organic mashed potatoes with bacon bits and sour cream. The meal，which serves 8 to 10，is $195，plus tax. Orders must be in by 3 p．m. Wednesday. To order，call (312) 5656665.
Kit Kat Lounge and Supper Club, 3700N. Halsted
The restaurant celebrates Thanksgiving a day early with a threecourse menu on Wednesday. Menu items include a wild mushroom tart(馅饼) with Gruyere and Cabernetmarinated steak with Havarti mashed potatoes. The $35 dinner each, tax and tip not included, includes a martini(马提尼酒)．For reservations, call (773) 5251111.
Lawry's the Prime Rib, 100E. Ontario
The star of the Thanksgiving menu is organic, free-range turkey from Pennsylvania. Togo dinner packages also will be offered, with 10 percent of proceeds going to the Greater Chicago Food Depository. Carryout packages range from $27 for an individual turkey dinner to $480 for a meal serving 12 to 14.Orders must be placed by Tuesday. Call (312) 7875000.
Popeyes, various locations
Thirteen of the chicken chain's Chicago locations are taking orders now for takeout fried turkeys. The turkeys，which serve 8 to 10，range from $40 to $45.Use the restaurant locator at www. popeyes. com for locations and phone numbers.
1. Turkey is offered in the restaurants EXCEPT ______.| A．Fairmont Chicago, 200N. Columbus |
| B．Popeyes, various locations |
| C．Lawry's the Prime Rib, 100E.Ontario |
| D．Cyrano's Bistrot and Wine Bar, 546N. Wells |
| A．(312) 4670546 | B．(312)7875000 |
| C．(773) 5251111 | D．(312)5656665 |
| A．Less than $70. | B．More than $70 . |
| C．Less than $35. | D．More than $35. |
| A．Chicken | B．Potato |
| C．Pumpkin | D．Steak |
| A．Call a telephone. | B．Surf the Internet. |
| C．Watch TV. | D．Listen to the radio. |
【推荐2】If you’re looking to buy a gift for your children, why not keep up with the trend and get the best hoverboard?
What is a Hoverboard?
A hoverboard is a two-wheeled personal transportation device. It’s electrical, portable and became highly popular in 2015. Typically, this self-balancing device operates like a powered skateboard.
How Does a Hoverboard Work?
The device may have many designs, but the mechanism itself isn’t complicated. Basically, a standard hoverboard contains:
•Battery: stores the electrical power. Almost all hoverboards use a high-watt lithium-ion battery.
•Gyroscope (one for each wheel): allows riders to tilt (倾斜) the hoverboard while maintaining balance and adjusting their direction.
•Motor (one in each wheel): provides the power to the wheels to keep the rider balanced and upright.
•Logic board: functions as the hoverboard brain. It processes data—your speed, tilt, etc.—and sends information to the motors. This unit controls the power of the board so riders can adjust their speed.
All the above components work together to control the power and tilt of the hoverboards so the rider is balanced, upright and moving at a controlled speed.
Why Buy a Hoverboard?
Undoubtedly, hoverboards are cool. You’ve probably seen kids riding one around the house. They’re a phenomenon and everybody wants in. So, why deny your kids and prevent them from being part of this trend?
Where is a hoverboard legal?
Despite their wild popularity, hoverboards have yet to become “street-legal”. Currently, some places prohibit anyone under 16 from using these devices, and hoverboards are banned in academic institutions and public places, like campus buildings, parks, shopping malls and subway stations. Some places have also put speed limits on the devices and restricted their use to bike paths. However, open areas—including your yard—are free of these restrictions.
1. The logic board of a hoverboard can ______.| A．store electricity | B．power the wheels |
| C．send information to the riders | D．receive data and give command |
| A．on campus | B．in parks |
| C．on bike paths | D．in shopping malls |
| A．To evaluate a gift’s quality. |
| B．To suggest a gift option. |
| C．To compare new hoverboard models. |
| D．To explain functions of the latest hoverboards. |
I'm afraid I have some very bad news for you. I have been very naughty and the school master is very angry with me. She is going to write to you. You must come and take me away from here. She does not want me in the school any longer. The trouble started last night when I was smoking a cigarette in bed. As I was smoking, I heard footsteps coming towards the room .I did not want a teacher to catch me smoking, so I threw the cigarette away. Unfortunately, the cigarette fell into the waste--paper basket. It caught fire.
There was a curtain near the waste --paper basket. It caught fire too. Soon the whole room was burning. The master phoned the fire brigade. The school is a long way from the town and before the fire brigade arrived, the whole school was on fire. The master said that the fire was all my fault and I must pay for the damage. She will send you a bill for about a million dollars.
I'm very sorry for this.
Much love
Sarah
1. Why did Sarah write to his parents?| A．He missed them very much for they hadn’t seen each other for a long time. |
| B．He told his parents what he had done in school. |
| C．He was tired of studying, and wanted to leave school. |
| D．He thought he was old enough to help them do something. |
| A．in the classroom | B．in the Dining hall |
| C．in the street | D．in the dormitory |
| A．because he was too naughty | B．because he was too lazy |
| C．because he caused a big fire | D．because he stole something from the school |
| A．they should not smoke, because smoking is dangerous to them |
| B．they should not dance, because dancing would waste a lot of money |
| C．they should not make friends, because making friends would take them absent |
| D．they should not wear expensive clothes because they would waste a lot of money |
