1 . Studying a subject that you feel pointless is never a fun or easy task. If you're studying history, asking yourself the question "why is history important "is a very good first step. History is an essential part of human civilization. You will find something here that will arouse your interest, or get you thinking about the significance of history.
History grounds us in our roots. History is an important and interesting field of study, and learning the history of our home country can give us a deeper, more meaningful glimpse（一瞥）into our ancestral pasts, and how we got to where we are today. Many people feel like they need a sense of cultural belonging, which is something that studying your roots and being open-minded to the evolution of your culture can provide.
History enriches our experience. Reading history is an amazing experience because it enables us to reflect on the social and economic life of the people living long time ago. According to the experts, problems faced by people regardless of the past and present are the same. With the information about the ancestors, one can become more experienced in handling challenges of life.
History makes us more empathetic（具有共情能力的）, Studying history can give us insight （洞察力）into why our culture does certain things, and how the past has shaped it into what we know now. It also provides a rather strong foundation for empathy across cultures. Fear and hate for others is usually caused by ignorance （无知）. We're scared of the things that we don't understand. History has the potential to break down those boundaries by offering us insight into entire worlds that would otherwise be foreign to us.
History can inspire us to learn more. what's fantastic about history is the way it broadens our horizons. It's almost impossible to learn about one historical period without having dozens of questions about related concepts. Study the 19th century England, and you might catch a glimpse of Charles Dickens' Oliver Twist. Look up Charles Dickens, and you might learn a thing or two about realism. Or maybe you end up switching your attention away from novels, and discover the history of romantic poets in England. It can go anywhere, and there is something in there for absolutely anybody.
The value of history cannot be underestimated. We don't have to live in the past, but we can definitely do better by learning from it and using the lessons learnt to lead more meaningful lives.
1. The underlined part "where we are today" in Para. 2 probably means __________.| A．the turning point in our history |
| B．the present state of our nation |
| C．the location of our homeland |
| D．the total area of our country |
| A．The problems at present are similar to those in the past. |
| B．Ancient people laid economic foundations for people today. |
| C．The current challenges of life were predicted by the ancestors. |
| D．People living long time ago knew more about how to solve problems. |
| A．It is difficult to get rid of cultural barriers. |
| B．People are willing to accept foreign cultures. |
| C．Cultural conflicts in history are difficult to ignore. |
| D．History helps us improve our cross-cultural awareness. |
| A．Charles Dickens contributes much to British literature. |
| B．Oliver Twist can satisfy our curiosity for romantic poets. |
| C．reading novels is a way to learn about a historical period. |
| D．studying history can arouse people's interest in other fields. |
| A．How to Build Cultural Identity |
| B．Why Studying History Matters |
| C．Know the Past, Know the Present |
| D．History: a Way to Broaden Horizons |
2 . We are the products of evolution, and not just evolution that occurred billions of years ago. As scientists look deeper into our genes (基因), they are finding examples of human evolution in just the past few thousand years. People in Ethiopian highlands have adapted to living at high altitudes. Cattle -raising people in East Africa and northern Europe have gained a mutation (突变) that helps them digest milk as adults.
On Thursday in an article published in Cell, a team of researchers reported a new kind of adaptation - not to air or to food, but to the ocean. A group of sea-dwelling people in Southeast Asia have evolved into better divers. The Bajau, as these people are known, number in the hundreds of thousands in Indonesia, Malaysia and the Philippines. They have traditionally lived on houseboats; in recent times, they’ve also built houses on stilts (支柱) in coastal waters. “They are simply a stranger to the land,” said Redney C. Jubilado, a University of Hawaii researcher who studies the Bajau.
Dr. Jubilado first met the Bajau while growing up on Samal Island in the Philippines. They made a living as divers, spearfishing or harvesting shellfish. “We were so amazed that they could stay underwater much longer than us local islanders,” Dr. Jubilado said. “I could see them actually walking under the sea.”
In2015, Melissa Ilardo, then a graduate student in genetics at the University of Copenhagen, heard about the Bajau. She wondered if centuries of diving could have led to the evolution of physical characteristics that made the task easier for them. “it seemed like the perfect chance for natural selection to act on a population,” said Dr. Ilardo. She also said there were likely a number of other genes that help the Bajau dive.
1. What does the author want to tell us by the examples in paragraph 1?| A．Environmental adaptation of cattle raisers. | B．New knowledge of human evolution. |
| C．Recent findings of human origin. | D．Significance of food selection. |
| A．In valleys. | B．Near rivers. | C．On the beach. | D．Off the coast. |
| A．They could walk on stilts all day. | B．They had a superb way of fishing. |
| C．They could stay long underwater. | D．They lived on both land and water. |
| A．Bodies Remodeled for a Life at Sea | B．Highlanders’ Survival Skills |
| C．Basic Methods of Genetic Research | D．The World’s Best Divers |
3 . Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1. Why are race walkers conditioned athletes?| A．They must run long distances. |
| B．They are qualified for the marathon. |
| C．They have to follow special rules. |
| D．They are good at swinging their legs. |
| A．It’s more popular at the Olympics. |
| B．It’s less challenging physically. |
| C．It’s more effective in body building. |
| D．It’s less likely to cause knee injuries. |
| A．Getting experts’ opinions. |
| B．Having a medical checkup. |
| C．Hiring an experienced coach. |
| D．Doing regular exercises. |
| A．Skeptical. | B．Objective. |
| C．Tolerant. | D．Conservative. |
4 . The connection between people and plants has long been the subject of scientific research. Recent studies have found positive effects. A study conducted in Youngstown，Ohio，for example, discovered that greener areas of the city experienced less crime. In another，employees were shown to be 15% more productive when their workplaces were decorated with houseplants.
The engineers at the Massachusetts Institute of Technology(MIT)have taken it a step further changing the actual composition of plants in order to get them to perform diverse，even unusual functions. These include plants that have sensors printed onto their leaves to show when they’re short of water and a plant that can detect harmful chemicals in groundwater. ＂We’re thinking about how we can engineer plants to replace functions of the things that we use every day,＂explained Michael Strano, a professor of chemical engineering at MIT.
One of his latest projects has been to make plants glow(发光)in experiments using some common vegetables. Strano’s team found that they could create a faint light for three-and-a-half hours. The light，about one-thousandth of the amount needed to read by，is just a start. The technology, Strano said, could one day be used to light the rooms or even to turn trees into self-powered street lamps.
In the future，the team hopes to develop a version of the technology that can be sprayed onto plant leaves in a one-off treatment that would last the plant’s lifetime. The engineers are also trying to develop an on and off＂switch＂where the glow would fade when exposed to daylight.
Lighting accounts for about 7% of the total electricity consumed in the US. Since lighting is often far removed from the power source(电源)-such as the distance from a power plant to street lamps on a remote highway-a lot of energy is lost during transmission(传输).Glowing plants could reduce this distance and therefore help save energy.
1. What is the first paragraph mainly about?| A．A new study of different plants. |
| B．A big fall in crime rates. |
| C．Employees from various workplaces. |
| D．Benefits from green plants. |
| A．To detect plants’ lack of water |
| B．To change compositions of plants |
| C．To make the life of plants longer. |
| D．To test chemicals in plants. |
| A．They will speed up energy production. |
| B．They may transmit electricity to the home. |
| C．They might help reduce energy consumption. |
| D．They could take the place of power plants. |
| A．Can we grow more glowing plants? |
| B．How do we live with glowing plants? |
| C．Could glowing plants replace lamps? |
| D．How are glowing plants made pollution-free? |
5 . What do you do when you have a problem? Would you ask a crowd of strangers for a solution? It may sound strange, but it has encouraged this successful innovation (创新). That's the thinking behind a challenge prize.
Challenge prizes come in many shapes and sizes but the basic concept (观念) remains the same. Rather than paying an expert to work out a solution, you offer the prize to anyone who believes they can solve it and presented the first to do so with a prize. Many would argue, “who is better qualified (有资格的) than an expert”. But actually, not using an expert will result in a great deal of thinking outside of the box.
Some argue that formal education can kill creativity, because it sometimes only teaches a single method to achieve the task. Similarly, some suggests that experts can have the same problem. “If we set up a challenge prize, the ‘experts’ that come to compete in it may tell us it can't be done,” says Marcus Shingles, the former CEO of the XPRIZE Foundation.
There are other advantages too. “You are not asking people to use a particular solution set on how to solve that problems. So you get the large amount of diversity,” adds Shingles. And because the crowd acts like a think tank (智囊团). Various thinking can throw up issues that may have been overlooked (忽视).
However, there are dangerous connected to challenge prizes. “You don't want to be creating a challenge prize which inspires people to solve a problem where there is no demand,” says Tris Dyson, the Executive Director of Nesta’s Center for Challenge prizes. This happened in 1979 when a prize of £100,000 was claimed by the first person to fly under human power across the English Channel. Despite its success, it has not led to the adoption of human powered flight as a form of travel. And of course, there are those who invest their personal time and money only to see no return at all.
The pros and cons of challenge prizes affect both problems-setters and problem-solvers. But they don't seem to be going out of style anytime soon. To many, the challenge to innovate and the attraction of the prize are too much to resist (抵制). And there is no solution for that.
1. What is the basic concept behind a challenging prize?| A．Rewarding the first one to solve a challenging problem. |
| B．Competing with the experts to get a particular solution. |
| C．Challenging the formal education that kills creativity. |
| D．Picking out someone more qualified than experts. |
| A．Overlooking possible details about a problem. |
| B．The lack of connection on practical innovations. |
| C．Failure to find a solution due to habitual thinking. |
| D．Overconfidence in finding a best solution. |
| A．Prizes received no return in terms of practical use. |
| B．The money shortage prevents the adoption of innovations. |
| C．Innovations are likely to go out of date in a short time. |
| D．The attraction of prize money is hard to resist. |
| A．Arguments for formal education. |
| B．The problem-solving prizes. |
| C．Dangers connected with challenge prizes. |
| D．The attraction of innovation. |
6 . Photographic self-portraits have existed for as long as cameras have been in human hands. But what about selfies in space? On Twitter last year, NASA astronaut Edwin Aldrin, who famously became the second man to walk on the moon in July 1969, laid claim to a spaceflight first: taking the first selfie in space during the Gemini XII mission in 1966.
“For me, it needs to be digital to be selfie,” argues Jennifer Levasseur, a director at the Smithsonian National Air and Space Museum. According to Levasseur, the concept of a selfie is directly linked to internet culture. “The thing that makes a selfie is sharing it,” she says.
Still, astronauts have been carrying cameras aboard space vehicles since the 1960s. In 1966, Aldrin used a Hasselblad camera designed specifically for space. Hasselblad also painted the first camera in space a matte(磨砂) black to reduce reflections in the orbiter window. But cameras used in space need to survive extreme conditions, like temperature swings from -149° to 248°F, so Hasselblad painted later model silver.
Astronauts visiting the moon then had to take out the film and leave their camera bodies behind when they returned to Earth, because early space missions were limited by a weight limit on the returned trip. Then a big change in space camera technology came after the space shuttle Columbia broke apart on its return to Earth in 2003, Levasseur notes. “Fear that they’d never be able to bring film back from space and lose all that hard work accelerated the push for digital,” she says.
Today, astronauts also have access to internet and social platforms in space and can post true space selfies made using digital cameras. Similarly, space robots are participating in selfie culture, capturing remote pictures of themselves in space or on other planets and sending them back to Earth.
1. Why do selfies in space need to be digital according to Jennifer Levasseur?| A．Astronauts are fond of studying technology. |
| B．Astronauts are eager to be famous on the Internet. |
| C．Astronauts desire to communicate on social platforms. |
| D．Astronauts want to overcome the fear in space. |
| A．It is painted silver. |
| B．Its matte black gathers light. |
| C．Its design is special. |
| D．It can reduce reflection itself. |
| A．The heavy space tasks. |
| B．A returned space shuttle. |
| C．A spaceflight crash. |
| D．The improved film. |
| A．The Origin of Selfies in Space |
| B．The Brief History of Selfies in Space |
| C．The Significance of Selfies in Space |
| D．The Popularity of Selfies in Space |
7 . Roughly the size of a soda can, sitting on a bookshelf, a relatively harmless device may be turning friends away from your home. The elephant in your living room is your Internet-connected camera, a device people are increasingly using for peace of mind in their homes. But few stop to think about the effect these devices may have on house guests. Should you tell your friends, for instance, that they’re being recorded while you all watch the big game together?
“It’s certainly new territory (领地), especially as home security cameras become easier to fix,” says Lizzie Post, president of the Emily Post Institute, America’s distinguished manners advisors. “I think it will be very interesting to see what manners appear in terms of whether you tell people you have a camera or not, and whether guests have a right to ask that it be turned off, if it’s not a security issue.” Post wants to make clear that she’s not talking about legal rights, but rather personal preference.
When it comes to security cameras, Post says it’s a host’s responsibility to make sure guests feel comfortable within their home. If the host casually acknowledges that there is a camera in the room by telling a story about, it that may be enough to provide an opening for a guest to say if they are uncomfortable.
However, if a contractor (合约工) is working in your home, you don’t need to tell them that there are cameras watching. Then again, the camera can also work in contractors’ favor. “If anything does go wrong while they’re in the house, they don’t want to be blamed for it,” she says. “In fact, the camera could be the thing that proves that they didn’t steal the $20, or knock the vase off the table.”
1. What is Lizzie Post mainly discussing about the use of home security cameras?| A．Legal rights. |
| B．Moral issues. |
| C．The possible impact on health. |
| D．Likes and dislikes of individuals. |
| A．Indicating its position. |
| B．Turning it on all the time. |
| C．Making their guests feel at ease. |
| D．Having a casual talk with guests. |
| A．It can prove their innocence. |
| B．It can record their working progress. |
| C．It can prevent the accidents happening. |
| D．It can make their work more enjoyable. |
| A．Negative. | B．Pessimistic. |
| C．Favorable. | D．Objective. |
8 . Imagine turning on the GPS and seeing an image of your car from above. As the car drives, the map follows along in real time, informing you of any traffic, pedestrians, animals or other things nearby. Routes and names of road appear over the live stream. It's like the map has come to life.
This type of map isn't available yet. But it could be very soon. In 2014, the WorldView-3 satellite was sent into space. Even though it orbits Earth at more than 370 miles (600km) away, it can take images of objects on Earth that are just 10 inches (25cm) across. Looking all the way from outer space, it can make out a smart phone held in your hand. It can tell what types of cars are travelling down a road. But it can't identify your face or read the cars' license plate numbers.
According to some reports, this satellite and other US satellites have the technology to take even sharper images, with a resolution of up to around 4 inches (10cm). But US law forbids making these super-sharp pictures public. But the idea that anybody might be able to spy on the entire Earth in such detail may seem scary. Live, high-detail satellite mapping could be used to keep tabs on anybody at any time, without the person's knowledge. Ray Purdy of University College London told CNN that he couldn't imagine what this could mean for privacy. "Most satellites are commercially owned, so if you have money, you can have that imagery. It means anyone can spy on anyone." he said.
At the same time, live, detailed maps of the Earth's surface could aid humanity in amazing ways. Satellite images can help experts track storms as they form and chart their paths. At high detail, live maps of a disaster area could quickly reveal people in need of rescue as well as the safest routes in or out. Satellites images are already helping the police catch illegal fishing operations. Higher detail may make it possible to catch other criminals in the act. The images could also make it easier for farmers to watch over their crops or for scientists to find minerals. Also, these images play a very important role in monitoring the health of forests and other landscapes.
What do you think? Would you like to see everyone accessing high-detail live maps of the Earth's surface? Please share your idea with us on the website.
1. How does the author introduce the topic of the passage?| A．By telling a story. |
| B．By supposing a situation. |
| C．By making a comparison. |
| D．By using a research finding. |
| A．Tell how a person looks. |
| B．Identify what a pedestrian is holding. |
| C．Help farmers sow seeds for their crops. |
| D．Read a running car's license plate number. |
| A．Regret. |
| B．Excitement. |
| C．Concern. |
| D．Sympathy. |
| A．Anyone can spy on anyone |
| B．Criminals have nowhere to hide |
| C．More satellites into space: good or bad? |
| D．A live map of everywhere on Earth:scary or cool? |
9 . You can remember the face, but can't put a name to it. Many of us have been caught in this embarrassing situation. But researchers say it is often easier to remember someone's name than what they look like.
Twenty-four volunteers were shown 40 pictures of strangers, paired with random(随机的) names. They were given time to memorize the faces and names before being tested on which they thought they had seen before.
The participants could remember up to 85 percent of the names but only 73 percent of the faces. When they were shown a different picture of the same person, the participants could recall only 64 percent of faces, according to the study, led by the University of York.
That may be because faces are only recognized visually(视觉地), while names can be both spoken and written down so appear in our visual and audio memory. When people were shown famous people, they also remembered their names more accurately than their photographs. Co-author Dr Rob Jenkins, from the university’s psychology department, said, ''Our study suggests that, while many people may be bad at remembering names, they are likely to be even worse at remembering faces. This will surprise many people as it is against our initial understanding. Our life experiences with names and faces have misled us about how our minds work. '' Remembering names gets harder with age, leading to many uncomfortable moments for middle-aged people when they run into people they know.
But to study whether names are harder to recall than faces, the researchers, whose findings are published in the Quarterly Journal of Experimental Psychology, used a ''fair test'' where the participants were presented with strangers' names and faces.
1. What can we know according to the research in Paragraph 3?| A．It is certain that names are harder to recall than faces. |
| B．Remembering names is more easily than remembering faces. |
| C．Most participants can remember the face not the name to it. |
| D．The participants can recall 73% faces of the same person. |
| A．Age will weaken the ability to remember names. |
| B．Unlike faces, names are only recognized visually. |
| C．Faces can appear in our visual and audio memory. |
| D．Rob Jenkins has proved people can remember faces better. |
| A．Clear. | B．first. |
| C．Unusual. | D．Creative. |
| A．People can't remember strangers’ names and faces. |
| B．Recalling names is more difficult than remembering faces. |
| C．The researcher uses the same method to study another problem. |
| D．Whether names are harder to recall than faces is further proved. |
10 . Harry, the first camel to arrive in Australia in 1840, was an unlucky beast. He was imported from the Canary Islands by explorer John Horrocks. On an expedition（探险），Horrocks picked up his gun in order to shoot "a beautiful bird to be added to the collection.” Perhaps Harry was an ecologist—he lurched（突然倾斜）, and the gun discharged, shooting Horrocks in the face.
Horrocks not surprisingly died of his injuries, and his teammates ordered Harry to be shot. The first importation of a camel into Australia came to naught.
At the beginning of 1860, 24 camels arrived in Australia to be part of an expedition by explorers Robert O'Hara Burke and William John Wills. It was an unlucky expedition. The pair made one mistake after another, and ended up eating most of their camels within several months, before starving to death.
Six years later, more than 100 camels and their Afghan minders arrived in Australia. This time it succeeded and thousands more camels followed.
Sir Thomas Elder set up the first camel studs（种畜场）in South Australia, while others were set up in Western Australia. This time the camels bred（繁殖）like wildfire. They were used for working, rather than exploring expeditions.
The imported Afghan cameleers（骆驼夫）were just as hardy and vital, leading camel trains across the cruel interior（腹地）of Australia, where few dared Io go. The camels carried heavy packs of wool and supplies and opened up the desert areas as none had managed to do before. The train that does this crossing today is called The Ghan, in their honor.
Motorization put these camel trains out of business, and many camels were turned loose. The camels loved Australia, and multiplied in amazing numbers. What is to be done with them?
Not surprisingly they have become quite a tourist attraction and you can take a camel ride in the desert as the Afghan cameleers once did. But the fact is that camels create quite a problem in areas where they have taken over, as they damage local vegetation, muscle out native animals competing for food, and create chaos when they wander into settled area.
1. What do we know about Harry?| A．He caused the death of an explorer. | B．He was shot by his owner. |
| C．He was interested in ecology. | D．He was mistaken for a bird. |
| A．Hara Burke and William John Wills killed their camels by mistake. |
| B．In 1860. most of the 24 camels arriving in Australia starved to death. |
| C．In 1866, more than 100 camels arrived in Australia accompanied by their caretakers. |
| D．The first camel studs was set up in Western Australia. |
| A．Camels' character. | B．The importation of camels in Australia. |
| C．Camels' contribution to Australia. | D．The train that carried camels in Australia. |
| A．The origin and development of camels in Australia |
| B．The increase and decrease of camels in Australia. |
| C．The breeding and training of camels in Australia. |
| D．The trading and hunting of camels in Australia. |
