1 . Traveling alone can be daunting. I have traveled by myself many times but, on every occasion, there was someone to meet me at the other end of the bus, train or plane journey. This time was different.
Last week I had a holiday, from work, but none of my friends had the same week off. I decided that I still wanted to do something, so I booked a train ride to Toronto and reserved a bed in a hostel for one week.
One week by myself. Would I be lonely? Would I be bored? Quite the opposite. In fact, there are many benefits that come from traveling alone. Firstly, I was able to do whatever I wanted. I spent hours in museums that would have seemed boring and dull to some of my friends. I walked all around the city, which' some people may have found too exhausting. Instead of relying on someone else to remember directions or to suggest activities to do, I discovered my' independence and developed map-reading skills that I didn’t know I had. I could get up and go to sleep when I wanted and I didn’t have to wait for anyone else to shower and get ready every morning. Being in the safe environment of a hostel with like-minded travelers also gives a great opportunity to meet new people from all over the world, which can help combat loneliness.
In spite of the benefits, I found that there were also some disadvantages of traveling alone. I missed having someone to talk to and to bounce ideas off. Experiences are often more enjoyable if they are shared, and part of the fun of traveling is the memories you have afterwards. Without a travel partner, I won’t be able to laugh about and remember my Toronto adventure with a friend or family member in years to come.
In addition, eating in a restaurant or cooking in the hostel was less fun on my own.
I am very proud of myself for traveling alone, and I had a fantastic time in Toronto. However, in the future, I think I will always prefer to travel with another person or in a small group. Though, maybe it depends on who you travel with I would rather be by myself than with someone who is lazy, difficult and argumentative.
1. What happened to the author last week?| A．She traveled alone to Toronto during a work vacation. |
| B．She felt lonely away from home and missed her family. |
| C．She found someone meeting her during a trip to Toronto. |
| D．She made a trip as her friend during the same week to Toronto. |
| A．finds it boring and dull to visit museums |
| B．has already acquired great map-reading skills |
| C．believes she could benefit by traveling alone more |
| D．enjoys sharing traveling stories with family and friends |
| A．Learn about. | B．Adapt to. | C．Fight against. | D．Live with. |
| A．She is proud of cooking in a hostel. | B．She will find it fun to travel with anyone. |
| C．She favors travelling with good company. | D．Argumentative travelers1 will be ideal choices. |
| A．Optimistic and talkative. | B．Humorous and generous. |
| C．Ambitious and imaginative. | D．Enthusiastic and independent. |
2 . These days, it's not unusual to see middle-aged men collecting Star Wars action figures, office workers wearing Hello Kitty accessories, or celebrities like David Beckham playing with Lego bricks. It's becoming more and more common to see adults taking an interest in toys, comic books and the activities that are traditionally associated with children. This phenomenon has given rise to a new word: kidult.
What lies behind the phenomenon? One is about adults' nostalgia （怀旧之情）for the carefree days of childhood, and this is especially true with today's fast-paced, stressful lifestyles. Another is about a societal change in recent decades where people are starting families later. As a result, they have more time and money to spend on themselves. Some adults could only window-shop for their dream toys when they were kids, but now they can afford that radio controlled car or high-priced doll they have always wanted.
Businesses have been quick to exploit the kidult trend, and the number of toy stores that target adults has risen. Companies are repackaging products from past decades and also bringing out new ones for adults. Lego, for example, has brought out an architectural series featuring landmarks from around the world.
Society traditionally disapproves of adults who refuse to put aside childhood interests, viewing the refusal as a sign of social immaturity and irresponsibility. Those who agree with this view sometimes claim that kidults are suffering from the pop-psychology concept known as Peter Pan Syndrome, an anomaly （异常）that people remain emotionally at the level of teenagers. On a grander scale, these kidult opponents （对手）argue that such delayed adulthood causes couples to marry later and have fewer children. This in turn can lead to shrinking national economies, for there needs to be a generational replenishment （补充）
of the workforce.
From the standpoint of kidults, though, this phenomenon is seen as nothing but harmless fun. Kidults insist that having youthful interests keeps them young, happy and creative, and their refusal to conform to society's acceptable tastes shows independent thinking. Besides, they argue that being part of the social trend of delayed adulthood is not purely a personal choice. The real causes include expensive housing, increased educational requirements for employment and poor work opportunities.
Whether the kidult phenomenon will continue to grow or prove to be a passing trend is anyone's guess. As the debate about it continues, remember that there is nothing wrong with being young at heart.
1. What does the kidult phenomenon refer to?| A．Adults act like children. |
| B．Adults have child-like tastes. |
| C．Adults go in for collecting toys. |
| D．Adults like playing with children. |
| A．Different living conditions. |
| B．More choices about toys. |
| C．High pressure of modern life. |
| D．Good memories of childhood. |
| A．Get used to. |
| B．Look forward to. |
| C．Take advantage of. |
| D．Make way for. |
| A．By strongly opposing kidult opponents. |
| B．By convincing readers to accept kidults. |
| C．By refusing to take a stand on the issue. |
| D．By presenting both sides of the argument. |
| A．Doubtful. | B．Positive. |
| C．Disapproving. | D．Uncaring. |
3 . If I could give today's young people three wishes, they would be: More hugs. More time outside in nature. More belief in their own power to change the world. While most people understand the importance of the first two wishes, the third one leaves some folks wondering why young people's belief in their own power is so essential.
Let's start with the idea that all of us-especially young people-need heroes. We need them to be our guides on the difficult trail(足迹)we call life and to show us just how far we can go. And we need heroes today more than ever. Our modern society is terribly confused about the difference between a celebrity and a hero. And the difference: is vital. A celebrity is all about fame(名望)-temporary, superficial fame, usually for qualities that are easy to see: a pretty face, a great dance move. A hero，by contrast, is about character-qualities under the surface that aren't visible until they take action.
Heroes are all around us. They truly hold our world together, through their unselfish devotion to helping others, teaching children, and protecting the environment. They don't want fame, or glory; they just want to help. In so many ways, these unsung heroes pilot the boat in which all of us sail.
Yet, young people hear a lot more about celebrities than about heroes in the media. The hidden message they get from all this is that their self-worth comes from what they buy-which shoes, which cell phone--not who they are down inside. What gets lost in this? Young people's sense of their own potential for heroic qualities--their own power to make a positive difference in the world. Truth is, there is a potential hero, a future difference maker, in every young person. Each of them, from whatever background, is a positive force who can do something. All it takes for that to be true is belief.
How do we help young people believe in their own power? The best way is simply to share examples, of other young people who have made a difference.
Ryan, age 11, has worked tirelessly to raise money to provide clean drinking water to African villages. When he first heard about the plight(困苦)of African children who died from impure water, Ryan was only six years old. In the next five years, he raised over $500,000-enough to build over 70 water wells.
Barbara, age 17, grew up on a farm in Texas. When she realized that local farmers were pouring their used motor oil into rivers, causing pollution, she organized the creation of a recycling center for crude(未加提炼的)oil. Her project has grown to include 18 recycling centers in Texas.
The list could continue.These are but a few examples of young people who have discovered that they can build on their own energy to do something great.
1. What is the author's purpose in writing Paragraph 2?| A．To give examples of celebrities and heroes around us. |
| B．To discuss the differences between celebrities and heroes. |
| C．To provide definitions of the words “celebrity” and “hero” . |
| D．To explain the details about being celebrities and heroes. |
| from the Latin super-("on top of")and -facies("face") |
Based on this information, what is the meaning of the word “superficial” in Paragraph 2?
| A．Not known. | B．Unexpected. | C．Undeveloped. | D．Without depth. |
| A．Heroes make the world go round. |
| B．Heroes must believe in themselves. |
| C．Heroes focus on social welfare programs. |
| D．Heroes promote cooperation between people. |
| A．Heroes and celebrities are both valued today. |
| B．Society doesn't support the development of heroes. |
| C．The media turn ordinary celebrities into real heroes. |
| D．Young people don't have the belief in their own strength. |
| A．By defining the qualities that make a young person a hero. |
| B．By contrasting the achievements made by different young people. |
| C．By giving examples of young people who show the qualities of a hero. |
| D．By providing examples of qualities that have made young people famous. |
| A．More heroes are needed in the world. |
| B．Celebrities are reported too much in the media. |
| C．Adults should become role models for young people. |
| D．Young people should believe in their ability to make a difference. |
4 . Papa, as a son of a dirt-poor farmer, left school early and went to work in a factory,for education was for the rich then.So, the world became his school.With great interest, he read everything he could lay his hands on, listened to the town elders and learned about the world beyond his tiny hometown."There's so much to learn," he'd say.“Though we're born stupid, only the stupid remain that way.”He was determined that none of his children would be denied(拒绝)an education.
Thus, Papa insisted that we learn at least one new thing each day.And dinner time seemed perfect for sharing what we had learned.We would talk about the news of the day;no matter how insignificant, it was never taken lightly.Papa would listen carefully and was ready with some comment,always to the point.
Then came the moment-the time to share the day's new learning.
Papa, at the head of the table, would push back his chair and pour a glass of red wine,ready to listen.
Felice, “he'd say,”tell me what you learned today.“learned that the population of Nepal is...”
Silence.
Papa was thinking about what was said, as if the salvation(拯救)of the world would depend upon it.“The population of Nepal.Hmm.Well...”he'd say.“Get the map; let's see where Nepal is.” And the whole family went on a search for Nepal.
This same experience was repeated until each family member had a turn.Dinner ended only after we had a clear understanding of at least half a dozen such facts.
As children, we thought very.little about these educational wonders.Our family,however,was growing together,sharing experiences and participating in one another’s education And by looking at us,listening to us, respecting our input, affirming(肯定)our value; giving us a sense of dignity, Papa -was unquestionably our most influential teacher.
Later during my training as a future teacher studied with some of the most famous educators.They were imparting(传授)what Papa had known all along-the value of continual learning.His technique has served me well all my life.Not a single day has been wasted, though I can never tell when knowing the population,of Nepal might prove useful.
1. What do we know from the first paragraph?| A．Those born stupid could not change their life. |
| B．The poor could hardly afford school education. |
| C．The town elders wanted to learn about the world. |
| D．The author's father was born in a worker's family. |
| A．the news | B．the request | C．the comment | D．the point |
| A．enjoyed talking about news |
| B．knew very well about Nepal |
| C．felt regret about those wasted days |
| D．appreciated his father's educational technique |
| A．Showing talents. | B．Continual learning. |
| C．Family get-together. | D．Winning Papa's approval. |
| A．a wiseman willing to share his knowledge |
| B．a parent insistent on his children's education |
| C．an educator expert at training future teachers |
| D．a teacher strict about everything his students did |
5 . To grow sugary dates in the sand, Siwa’s farmers must first make the desert suitable for farming. An oasis (绿洲) in Egypt, Siwa has been home to humans for thousands of years. Since ancient times, the oasis has hosted farms producing some of the most valuable dates in Egypt, and sugary dates have appeared on Egyptians, tables.
The desert environment in Siwa is not quite fit for plants to grow. For example, the water there contains much salt. However, with local people’s efforts, the Siwa oasis contains complex agricultural fields, where date trees, crops and other plants grow in harmony. That impressed me a lot during my visit to the oasis. To make a new piece of field, farmers first remove the top soil and replace it with a mixture of sand and waste matter from animals. The first plants are medicinal plants. Then, farmers plant date trees and olive trees. These farming skills are passed down from generation to generation.
To grow date trees is demanding. And it takes 10 years for a new date tree to mature, but once it does, the tree produces generous fruit: around 110 pounds of dates per year. Each farmer picks dates with the skilled hands. They climb the trees using nothing more than a belt. In total, Siwa grows more than 25,000 tons of dates from 280,000 trees per year.
The dates can be eaten fresh, or made dry. Every part of the date tree is significant in Siwa, from leaves made into beds and boxes to wood used to build houses. And then, of course, there’s the fruit itself. The dates can be cooked with goat meat or mixed with eggs for breakfast. They can also be mixed with flour, water, and olive oil, and boiled slowly to make a local dessert.
Local farmers once developed many unique date varieties, which their camels carried to Cairo. But later many of those varieties perished. And today only several major varieties remain and some have become quite rare and been at risk. The 1985 construction of a road in the oasis made the survival of local agricultural tradition even tougher.
1. What can we learn about sugary dates from Paragraph 1?| A．They can adapt to tough environment. |
| B．They have existed for a long time. |
| C．They’re introduced to Egypt from abroad. |
| D．They’re the most valuable fruit in Egypt. |
| A．The great variety of plants grown there, |
| B．The hard but happy life of local people. |
| C．The great complexity of the local agriculture. |
| D．The local farmers’ wisdom and contribution to farming. |
| A．It’s worthwhile to make an effort to grow date trees. |
| B．It’s easy for farmers to pick dates from the trees. |
| C．It costs a lot to grow date trees in the basis. |
| D．It’s necessary to develop agriculture in Siwa. |
| A．People’s preference for dates. |
| B．The introduction to local food, |
| C．The usage of date trees’ different parts. |
| D．The locals’ high expectations of date trees. |
| A．Died out. | B．Spread out. |
| C．Got created. | D．Became known. |
6 . As COVID-19 spreads across the globe, people are staying 1.8 meters apart, washing their hands and avoiding touching their faces . Or at least they're trying to. However, ignoring an itchy nose or hair in your eyes is easier said than done. Even professionals who should know better get caught by the impulse. Medical school students being trained in infectious disease prevention, for example, touched their faces 23 times an hour during a lecture, according to a 2015 study in the American Journal of Infection Control.
"Actually, it's one of the most common habits for any human," said psychologist Kevin Chapman. "People are taught to touch their faces often, whether by applying makeup, brushing their teeth, or putting their hair up," Chapman added. These routines carry over to less intentional methods of touching their faces, such as rubbing their eyes in a bacteria-filled grocery store.
This tendency isn't just about repetition. "It's a habit to make sure that our faces are appearing a certain way publicly, " Chapman said. Food around the mouth , for example , could suggest that someone is lazy or doesn’t take care of their appearance. Touching their face allows people to regulate their presentation and also shows others that they're self-aware.
Though touching the face is a bad habit for many people, it can be worse for those with anxiety. To manage stress, they may perform body-focused repetitive behaviors such as biting their nails or pulling their hair. On a less severe level, people may touch their faces to comfort themselves in times of stress.
When people are concerned about touching their faces, they may do it more frequently. To break the habit, you should start by being more aware of what you are doing, but don't punish yourself when you reach out your hand.
1. What does the underlined part "the impulse" in Paragraph 1 refer to ?| A．The desire to touch the face. | B．The hope of staying away from others. |
| C．The desire to wash hands frequently. | D．The wish to accept professional training. |
| A．It is an acquired habit. | B．It is the latest fashion. |
| C．It is an age-old custom. | D．It is the act of self-protection. |
| A．Its typical examples. | B．Its future tendency. |
| C．Its public rules. | D．Its social reasons. |
| A．To keep focused. | B．To stop self-harm. |
| C．To make themselves relieved. | D．To create a strong impression. |
| A．By taking regular relaxation exercises. | B．By paying more attention to the behavior. |
| C．By carrying out severe punishment accordingly. | D．By concentrating on the other parts of the body. |
7 . Faced with a declining population and shrinking workforce, Japan has been increasingly turning to robots for help. Over the years, the androids have been employed to perform a large number of human tasks, including building products and providing care and companionship for the elderly. The latest addition to the Japanese “workforce” may be Model-T. Designed by Telexistence Inc., this seven-foot-tall robot is currently undergoing trials restocking sandwiches, drinks, and ready meals on shelves at select locations of local convenience store chains Lawson and FamilyMart.
Telexistence has received funding from technology investment company Softbank Group and cell phone service operator KDDI in Japan, with overseas investors including European passenger aircraft maker Airbus Ventures. It named its robot Model-T, a nod to the Ford Motor car that began the age of mass motoring a century ago.
Model-T, whose face somewhat resembles that of a kangaroo, is certainly not the first restocking robot. However, the warehouse robots currently being used by companies, like Walmart and Amazon, are only able to accomplish single, repetitive tasks, such as carrying boxes. Model-T, on the other hand, has a wide range of movement and can be used to restock objects of various sizes, making it ideal for convenience and grocery stores, which sell a large variety of items.
“It is able to grasp or pick and place objects of several different shapes and sizes into different locations，” Matt Komatsu, head of business development and operations at Telexistence Inc., told CNN Business. However, Model-T is not autonomous. Instead, it is operated by human “pilots” wearing a virtual reality(VR) headset and special gloves, which allow them to feel the product the robot is holding in their hands and guide it to the right shelf. Since the video connection between the robot and the human operator has a mere 50 milliseconds delay, the navigation process is seamless. Telexistence says the VR-controlled androids are easier to develop and maintain. They are also ten times cheaper than autonomous robots, which require complex programming.
Though Model-T appears to have passed the trials, it is not quite ready to enter the labor force. Besides being a lot slower than human labour, it is also only capable of lifting packaged items, and cannot grasp loose items such as fruits and vegetables. Telexistence hopes to introduce a faster Model-T within the next two years.
1. What is the main driving factor for the invention of Model-T?| A．The demands of senior citizens. | B．The development of technology. |
| C．The shortage of labour force. | D．The appeal of convenience stores. |
| A．It is an updated version of Ford Motor. | B．It may create a new age like Ford Motor. |
| C．Its bond with Ford Motor is inseparable. | D．Its design is as fashionable as Ford Motor. |
| A．It has a cute appearance to attract customers. | B．It can accomplish single and repetitive tasks. |
| C．It is flexible while performing its duty. | D．It comes in a wide variety of sizes. |
| A．It doesn’t need maintenance. | B．It performs tasks automatically. |
| C．It requires complex programming. | D．It depends largely on human’s operation. |
| A．Smooth. | B．Complex. | C．Time-consuming. | D．Annoying. |
| A．Its limitations. | B．Its working principle. |
| C．Its applications. | D．Its exciting prospect. |
8 . In 2016, the world’s population cast aside 49 million tons of electronic waste, known as e-waste. It has been calculated that this number will grow to more than 60 million tons by 2021.
What is causing the upsurge（激增）in e-waste? Technology is becoming more and more widespread, covering almost every aspect of our lives. Meanwhile, the lifespan of devices is getting shorter-many products will be thrown away once their batteries die, to be replaced by new devices. Companies intentionally plan the obsolescence（过时）of their goods by updating the design or software and discontinuing support for older models, so that now it is usually cheaper and easier to buy a new product than to repair an old one. Since prices are falling, electronic devices are in demand around the world.
As more people buy electronic equipment，manufacturers（制造商）are beginning to face shortages of the raw materials needed to make their products, so recycling and reusing materials from discarded（扔掉的）products and waste makes economic and environmental sense.
Recycling e-waste is practiced both formally and informally. Proper or formal e-waste recycling usually involves taking apart the electronics, separating and sorting through the materials and cleaning them. Companies must obey health and safety rules to reduce the health and environmental hazards of handling e-waste by using pollution-control technologies. All this makes formal recycling expensive. Informal recycling is typically unlicensed and uncontrolled. At informal recycling workshops, men and women recover valuable materials by burning devices to melt away non-valuable materials. Usually they do not wear protective equipment and lack any awareness that they are handling dangerous materials.
With the amount of e-waste growing around the world, recycling alone will not be enough to solve the problem. In order to reduce e-waste, manufacturers need to design electronics that are safer, and more durable, repairable and recyclable. The best thing you can do is resist buying a new device until you really need it. Try to get your old product repaired if possible and, if it can’t be fixed, resell or recycle it responsibly. Before you recycle your device, put any broken parts in separate containers and close these tightly to prevent chemicals from leaking. Wear latex gloves and a mask if you’ re handling something that’s broken.
1. Which of the following is the reason for e-waste’s increasing sharply?| A．The results of updating devices. |
| B．The methods of recycling e-waste. |
| C．The causes of devices’ price dropping. |
| D．The shortages of protective equipment. |
| A．To increase the variety of electronic products. |
| B．To lower the costs of technology innovation. |
| C．To relieve the lack of raw materials. |
| D．To improve the poor quality of e-devices. |
| A．Influence. | B．Harm. | C．Limits. | D．Costs. |
| A．Their ways of reusing waste are encouraged largely. |
| B．They are blamed for generating all the dangerous chemicals. |
| C．They aim to discover rare materials from waste for new products. |
| D．Their workers are unaware of the danger from dealing with devices. |
| A．Everyone should take action to reduce e-waste. |
| B．Companies should be mainly responsible for reducing e-waste. |
| C．Fixing a device could cause more pollution than buying a new one. |
| D．E-waste could be broken down by burying it underground for a long time. |
9 . Recently, a Scottish grocery store employed a robot. The robot, named Fabio, was part of an experiment conducted by the Heriot-Watt University, which explores the combination of men and machines. Elena Margiotta, co-owner of the Margiotta supermarket chain, says, “We thought a robot was a great addition that could show the customers that we are always wanting to do something new and exciting.”
Fabio’s job was to make customers feel welcome and assist them in locating grocery items if asked. Things seemed to start off well. The almost 4-foot-tall humanoid robot greeted customers, talked intelligently about the weather, and even gave hugs and high-fives. Later, its friendliness appeared to wane when a shopper needed help but received a vague answer. Therefore, store visitors began to seek out human employees for help.
Believing it might be better at a job that required more socializing, the shop assigned Fabio to hand out sausage samples. Unfortunately, things did not go well. While a human employee managed to attract 12 customers to try the food in 15 minutes, the robot attracted just two.
Since Fabio was not trained for any other job, the grocery store management decided to “fire” the robot a week after it had first reported for duty. The director of the Interaction Lab at Heriot-Watt says, “When we had to put it back in the box, one of employees started crying because they had become emotionally attached to it. It was good in a way because we had thought they would feel threatened by it as it was competing for their job. ” As he later discovered, the tears were not out of fondness for Fabio, but it was because the robot freed the human employees from the dull task of responding to customers’ questions.
Although Fabio appears to be different within its family, thousands of other quite similar Pepper humanoid robots employed at various Japanese stores and some stores in America seem to be extremely popular with customers.
1. According Elena Margiotta, the shop employed a robot to ______.| A．reduce the cost of running the shop |
| B．carry out an experiment |
| C．show the intention to change |
| D．deliver and place the groceries |
| A．become weaker. | B．become more popular. |
| C．become more obvious. | D．become less sincere. |
| A．didn’t get along well with human employees |
| B．failed to be understood by customers |
| C．couldn’t clearly tell the samples’ strengths |
| D．was no match for human employees |
| A．Fabio performed well in its job |
| B．they benefited from Fabio’s help |
| C．robots competed with them for the job |
| D．robots could respond well to customers’ questions |
| A．Other Pepper humanoid robots are superior to Fabio. |
| B．Robots-based customer service has a long way to go. |
| C．Scottish people are particular about robot employees. |
| D．People’s acceptance of robots may vary from culture to culture. |
10 . First aircraft carrying medical supplies from China arrives in U.S
An aircraft carrying personal protective equipment donated by China, along with U.S.-purchased medical supplies, arrived in New York on March 29.
The plane is the first in a series of flights over the next 30 days organized by the White House to help fight the coronavirus, the White House said. Most of the purchases are from Asia including Malaysia and Vietnam.
The Chinese Embassy in the U.S. retweeted a report from Axios, which said that 12 million gloves, 130,000 N-95 masks, 1.7 million surgical masks, 50,000 gowns, 130,000 hand sanitizer units, and 36,000 thermometers from China have arrived in the United States.
Along with the goods, Chinese company Huawei donated 10,000 masks, 20,000 articles of protective clothing, 10,000 gloves and 50,000 goggles to New York state.
Governor Andrew Cuomo confirmed the donation and thanked Huawei on Twitter.
The plane was funded by the Federal Emergency Management Agency. It landed at John F. Kennedy airport carrying gloves, gowns and masks for distribution in New York, New Jersey and Connecticut, three hard-hit states battling to care for a crush of coronavirus patients.
The airlift is a product of a team led by White House senior adviser Jared Kushner, which formed "Project Airbridge," a partnership between large U.S. healthcare distributors such as Mekesson Corp, Cardinal, Owens & Minor, Medline and Henry Schein Inc, and the federal government.
The flight from Shanghai was the first of about 20 flights to arrive between now and early April, according to the White House. Additional flights will carry similar gear from China, Malaysia and Vietnam.
1. From the passage we know that ________.| A．all good on the plane are donated by China |
| B．all goods on the plane are purchased from China |
| C．all good on the plane are donated by Huawei |
| D．some of the goods on the plane are from donation while others are purchased from Asia |
| A．New York. | B．New Jersey. | C．California. | D．Connecticut. |
| A．The federal government. | B．A team led by White House senior adviser Jared Kushner. |
| C．Large U.S. healthcare distributors. | D．White House senior adviser Jared Kushner. |
| A．Protective equipment and medical supplies. | B．Parts of the machine. |
| C．Medicine. | D．Food. |
| A．A textbook. | B．A collection of stories. |
| C．A guide book. | D．An official report. |
