1 . A five-year-old dog named Kelsey has been praised as a hero for helping to save the life of her owner who slipped in the snow and broke his neck.
The man, Bob, was alone when he left his farmhouse on New Year’s Eve to collect firewood.Expecting a journey of only several meters, Bob was wearing just long johns (衬裤), a shirt and slippers when he went outside, although the temperature was around －4℃.
After the accident, he was unable to move in the snow. Fortunately, Kelsey came to his assistance.
“I was shouting for help, but my nearest neighbor is about 400 meters away, and it was 10:30 p. m.,” Bob explained. “By the next morning, my voice was gone and I couldn’t yell for help, but Kelsey didn’t stop barking.”
Kelsey’s companion kept him warm by lying on top of him. She licked his face and hands to keep him awake. “Kelsey kept barking but never left my side,” Bob recalled. “I knew I couldn’t give up and that it was my choice to stay alive.”
Bob spent 20 hours in the freezing cold. When he finally lost consciousness, his dog kept barking. Finally, hearing the barking, Bob’s neighbor discovered him at 6:30 p. m. on New Year’s Day and called the emergency services at once. When Bob arrived in hospital, his body temperature was below 21℃. However, doctors were surprised to find that he didn’t have any frostbite (冻疮). They believed it was because of Kelsey’s determination to keep him warm. Dr. Chaim Colen, the doctor who treated Bob, said, “His dog really saved him.He was very fortunate.”
Bob said he was very grateful to both Dr. Colen and his Kelsey. “They saved my life. They are truly heroes!”
1. What happened to Bob on New Year’s Eve?| A．He left his dog alone in his farmhouse. |
| B．He was praised for saving a dog owner. |
| C．He broke his neck and couldn’t move. |
| D．He heard his neighbor’s shouting for help. |
| A．To keep warm. |
| B．To stay alive. |
| C．To keep Bob awake. |
| D．To seek help from others. |
| A．Helpful. | B．Fortunate. |
| C．Grateful. | D．Friendly. |
| A．A Neckbreaking Accident |
| B．The Magic Night |
| C．Warmth on a Winter’s Night |
| D．Determination to Keep Alive |
2 . An earthquake can strike without warning. But many injuries and deaths from this kind of natural disaster can be prevented if people follow these safety tips.
If you’re inside a building, stay there! One of the most dangerous things to do in an earthquake is to try to leave a building.
If you are trapped in the ruins, cover your mouth with a handkerchief or a piece of clothing. Use your cellphone to call for help if possible. Don’t shout.
Be prepared for aftershocks
| A．Don’t move about or kick up dost. |
| B．If you’re outside, go to an open space. |
| C．Shouting can cause you to breathe in dust. |
| D．Don’t park your car under a tree or any tall object. |
| E．Take a good hold of your cellphone in the building. |
| F．They can happen in the first hours after the earthquake. |
| G．Most injuries happen when people inside buildings try to get out. |
3 . More than half of the food produced in Canada goes to waste. A shocking new study has shown that the level of food waste is far worse than previously thought, at 58%. Of that, about 85% of food waste is due to food processors. This differs from earlier studies, which criticized families for driving food waste and said they were responsible for 51% of food waste.
The study was carried out by Martin Hooch, the leading expert on food waste and the author of several previous studies on the subject. Reflecting on the study’s findings, Hooch said, “It means stopping criticizing consumers. Sure, consumers are part of the problem, but they’re not the problem.”
In the past, Hooch didn’t master good data, particularly from the private factories, but relied on numbers collected by the food industry for purposes other than tracking waste. This time, however, Hooch worked directly with companies at all stages along the food production chain and interviewed over 700 experts in the industry. Clearly he found it hard to believe what he was seeing.
This is what they found: Food processing causes 34% of food waste. This is followed by production, which causes 24%. Next is manufacturing at 13%, then hotels and restaurants at 9%. Families cause only 14%, and market sales 6%. This should be a scrious wake-up call for Canadians who would do well to examine their own food supply chains. Food waste is costly, not only in terms of dollars wasted, but also in resources like land, water, and so on. To be using these resources and wasting the product is totally irresponsible and unnecessary.
To make matters worse, when food is thrown into rubbish cans, it produces methane, a greenhouse gas 30 times more powerful than carbon dioxide (CO2). At Canada’s rate of food waste, that’s like adding 12 million cars to the road. It seems that the food industry needs redesigning. Therefore, let’s hope the government takes action.
1. What did earlier studies say about food waste in Canada?| A．Families were to blame for food waste. | B．Food went bad when it was processed. |
| C．Most of the food was wasted on purpose. | D．Food waste was better than expected. |
| A．By studying data from the industry. | B．By drawing a conclusion from the previous studies. |
| C．By collecting advice from experts worldwide. | D．By tracking the whole production chain. |
| A．Because it is harmful to the trees. | B．Because it produces more greenhouse gas. |
| C．Because it gives off unpleasant smells. | D．Because it pollutes the soil around it. |
| A．Canadians don’t like to save food for future. |
| B．Families are mainly responsible for food waste. |
| C．More than half of the food is wasted in Canada. |
| D．The food industry is better redesigned in Canada. |
4 . In the 12th century, physician Ibn Zuhr conducted some animal research to assess the surgical procedures that could be applied to humans. Since then, animal testing has been considered the most efficient way to develop new drugs. New medical treatments and drugs are tested on animals first to determine their effectiveness or safety levels before they are finally tested on humans. However, it remains controversial whether it is morally right or wrong to use animals for experiments.
The use of animals for medical purposes is seen to be necessary by many scientists. Researchers usually begin their trials using rats. If the tests are successful, further tests are done on monkeys before using human beings. For testing, such tiered(分层的) rounds are important because they reduce the level of error and negative side effects. Some argue that animal testing has contributed to many life-saving cures and treatments and there is no adequate alternative to testing on a living, whole-body system. Moreover, there are regulations for animal testing that limit the misuse of animals during research. They serve as evidence that animals are well taken care of and treated well instead of being intentionally harmed.
However, some other experts and animal welfare groups have opposed such practice, considering it as inhumane(不人道的) and claiming it should be banned. According to Humane Society International, animals used in experiments are commonly subjected to force-feeding, radiation exposure, operations to deliberately cause damage and frightening situations to create depression and anxiety. They also hold the view that animals are very different from human beings and therefore are poor test subjects. Drugs that pass animal tests are not necessarily safe. Animal tests on the arthritis (关节炎) drug Vioxx showed it would have a protective effect on the hearts of mice, yet the drug went on to cause about 27,000 heart attacks before being pulled back from the market.
It’s safe to say that using animals for tests will continue to be debated in many years to come. Despite the benefits of animal testing, some of the concerns need to be addressed with adequate regulations to ensure that animals are treated humanely.
1. Why is animal testing considered necessary?| A．Rats are more similar to humans than monkeys. |
| B．Other testing alternatives may not replace animals. |
| C．Animal testing can show every side effect of drugs. |
| D．Animal testing has been in practice since the 12th century. |
| A．Eating poisonous food. | B．Being killed deliberately. |
| C．Breathing in polluted air. | D．Having unnecessary operations. |
| A．animal testing helps find the cure for arthritis |
| B．some drugs need to be withdrawn from the market |
| C．animals cannot necessarily produce accurate results |
| D．a drug should be tested many more times before its release |
| A．Scientists should reduce the number of animals used in research. |
| B．Experts should try hard to determine whether animal tests are harmful. |
| C．Relevant organizations should show more concern about the animals’ welfare. |
| D．The authorities should issue new laws to guarantee animals’ rights during research. |
5 . In almost every photo from our 1986 family vacation to Washington, D.C., I am showing off the souvenir I
Over 30 years later I
Soon I was making
When Bei Bei was a few months old, the zoo held an official
| A．brought in | B．took in | C．picked out | D．put on |
| A．with | B．for | C．on | D．around |
| A．delay | B．avoid | C．preserve | D．prevent |
| A．year | B．trip | C．country | D．world |
| A．treated | B．found | C．devoted | D．confirmed |
| A．carried | B．raised | C．added | D．presented |
| A．return | B．start | C．leave | D．slip |
| A．common | B．abrupt | C．regular | D．temporary |
| A．approval | B．treatment | C．cause | D．routine |
| A．curious | B．thoughtful | C．friendly | D．brave |
| A．offering | B．blaming | C．reminding | D．forcing |
| A．feeding | B．opening | C．closing | D．exchanging |
| A．appealing | B．disappearing | C．cutting | D．forming |
| A．chatted | B．hurried | C．worked | D．drove |
| A．evaluate | B．seek | C．watch | D．teach |
6 . In a county of Britain, a pair of pig farmers has managed to feed one million bees by turning over half of their land to wildflowers. Four years ago, brothers Mark and Paul Hayward decided to fill 81 acres of their farm land with wildflowers. This week, a study found they were feeding one million bees at any time.
“This was our target when we started, to, grow enough flowers to feed a million bees on a single day.” Mark said. “We are acutely aware that bees are under threat from modern farming methods and that East England is one of the worst places where bees are seriously suffering from lack of wildflower diversity,” he continued.
“Every third bite of food you eat can come from bees and we wanted to create an operation on our farm that did not push nature out but rather hugged it-as a central part of our ecology system and our food cycle,” he said.
The farm uses all kinds of seeds which can produce many different wild plants and of course, the bees can get food from different wildflowers.
“We are taking a very small role in helping society restore a balance and this starts with plant diversity to encourage insects, bees, small mammals(哺乳动物), and birds,” said Paul. “At the end of the day, we see ourselves as caretakers of this land. Between us we have six children and we owe it to them to farm sustainability(持续性)and set an example for the generations to come,” added Paul.
According to the Bee Conservation Trust, many types of bees have seen their populations decline by 70%, and two species have become extinct in the last century.
Gill Perkins, CEO of the Bee Conservation Trust said, “Thanks to Mark and Paul, at least here, a million bees can keep living, which is of great significance for ourselves now and future.”
1. What can we know about the brothers from the first two paragraphs?| A．They have about 160 acres of land. |
| B．They grow wild flowers for pigs. |
| C．They are not good at growing wild flowers. |
| D．They have to support 1, 000, 000 bees in their land. |
| A．There is a shortage of water for bees. |
| B．Bees are not used to the modern society. |
| C．There are too many animals eating bees. |
| D．Bees can not find different wild flowers. |
| A．Opposed. | B．Doubtful. |
| C．Supportive. | D．Disappointed. |
| A．The Bees are in Danger Now |
| B．Two Brothers Feed a Million Bees |
| C．Only one Million Bees are Surviving in East England |
| D．Two Brothers Love Wild Flowers in East England |
7 . Amsterdam is one of the most popular travel destinations in the world, famous for its beautiful canals, top art museums, cycling culture and so on. It is the capital city of the Netherlands and often referred to as the “Venice of the North” because of its expansive system of bridges and canals. Here are some of the key points to remember as you plan your trip to Amsterdam.
Must-See Attractions
Most visitors begin their Amsterdam adventure in the Old Centre, which is full of traditional architecture, shopping centers, and coffee shops. You’ll also want to check out Amsterdam’s Museum Quarter in the South District, which is great for shopping at the Albert Cuyp Market and having a picnic in the Vondelpark. The top museums to visit there are the Rijksmusuem, the Ann Frank House, and the Van Gogh Museum.
If You Have Time
There are several other unique districts in Amsterdam, and you should try to explore as many of them as time allows. The Canal Ring is a UNESCO World Heritage Site that was originally built to attract wealthy home owners and is a center for celebrity spotting and nightlife today. The Plantage area has most of the city’s museums and the botanical gardens.
Money Saving Tips
●Unless you really want to see the tulips(郁金香) blooming, avoid booking between mid-March and mid-May. This is when hotel and flight prices rise.
●Look for accommodations in Amsterdam’s South District, where rates are generally cheaper than in the city center.
●Buy train tickets at the machine instead of the counter to save a bit of money.
●Instead of hiring a tour guide, hop on a canal boat. They’re inexpensive and will give you a unique point of view of the city.
Check out our homepage to view price comparisons for flights, hotels, and rental cars before you book.
1. What can be learned about Amsterdam from this passage?| A．The Van Gogh Museum lies in the South District. |
| B．The Canal Ring is a place to attract garden lovers. |
| C．The Old Centre is a UNESCO World Heritage Site. |
| D．Amsterdam is called the “Venice of the North” because of its location. |
| A．arrange a guided tour | B．buy train tickets at the counter |
| C．reserve a hotel in the South District | D．book flights between mid-March and mid-May |
| A．A magazine. | B．An essay. | C．A report. | D．A website. |
8 . Scientists say the plant enset, an Ethiopian staple (主食), could be a new superfood and a lifesaver in the face of climate change. “This is a crop that can play a really important role in addressing food security and sustainable development,” said a university professor in Awasa, Ethiopia.
Enset, or “false banana”, is a close relative of the banana but is consumed only in one part of Ethiopia. The banana-like fruit of the plant is inedible (无法食用的), but the stems and roots can be processed to make porridge and bread.
However, Ethiopia is isolated (隔离) by dry lowlands, which are unsuitable for enset to grow. And the procedures for enset raising and preparing require special knowledge. Therefore, despite its wild relatives distributing across Africa, enset is only used as a crop in Ethiopia and has never been widely adopted elsewhere.
Using agricultural surveys and modelling work, scientists found the crop could potentially feed more than 100 million people and boost food security in Ethiopia and other African countries.
Study researcher Dr James Borrell, of the Royal Botanic Gardens, said planting enset as an alternative crop for tough times could help support food security. “It’s got some really unusual characteristics that make it absolutely unique as a crop,” he said. Reaching ten meters tall, as few as 15 enset plants can feed a person for a year. Also, it has flexible harvest times, stores well, and is relatively drought and disease tolerant. All these features have earned it the name, “the tree against hunger”.
There is growing interest in seeking new plants to feed the world. Nearly half of all the calories we eat come from three species - rice, wheat, and corns. “We need to diversify the plants we use globally as a staple because all our eggs are in a very small basket at the moment,” said Dr Borrell.
1. What can we know about enset?| A．It is widely consumed in Ethiopia. | B．Its stems and roots can serve as a staple. |
| C．It is mainly grown in dry lowlands. | D．It distributes throughout the world. |
| A．Lack of related knowledge. | B．Poor quality of farmland. |
| C．Low productivity. | D．Strict storage condition. |
| A．Its advantages. | B．Its edibility. | C．Its variety. | D．Its distribution. |
| A．People are fed up with existing staples. | B．A world of biodiversity is needed. |
| C．Crop varieties should be increased. | D．Food security has been addressed. |
9 . Alaska’s Yukon River has faced major salmon shortages in recent years. Officials say record-high temperatures last year killed most salmon in the 3,200-kilometer river before the fish were able to reproduce. The losses led Alaska to stop their salmon harvests in 2021 to make sure that enough fish survived to reproduce for another year.
The poor salmon harvests caused major financial losses to private fishing companies in the area. The die-offs also hurt native communities, which traditionally store the fish as a year-round food supply.
Last month, the U.S. Department of Commerce declared a disaster for Yukon River fishing for 2020 and 2021, making aid money available. Alaska has sent emergency fish shipments to areas affected by the salmon shortages.
Scientists have mostly blamed the problems on a series of heat waves in the Bering Sea and North Pacific Ocean from 2014 to 2019. The warm ocean waters affected salmon’s living in the sea before they returned to lay eggs.
Climate change may also be affecting what the salmon are eating. Fishing experts say young salmon are likely filling up on nutrient-poor food because warmer waters drive away healthier organisms (有机物) they normally feed on. “In my opinion, the salmon are starving with climate change,” said Brooke Woods in the Yukon River Inter-Tribal Fish Commission.
The effects of climate change on freshwater environments have also been studied. Vanessa von Biela is a biologist who looked at the rivers, streams and lakes where salmon live. Her team found that Chinook salmon show heat stress at temperatures above 18℃. They start dying above 20℃. In 2019, temperatures on the Alaskan side were above 18℃ for 44 straight days, a recent study found.
The effects of warming waters can be reduced by climate-driven glacier (冰川) runoff, which brings cooler water into rivers and streams. But scientists still expect salmon to begin slowly moving to new areas within Alaska. “Salmon will find a way,” said Biela. “but it’s going to be hard for communities in places where there might not be salmon anymore.”
1. What do the locals rely on salmon for?| A．Food supply. | B．Scientific study. | C．Green tourism. | D．Water improvement. |
| A．Financial losses. | B．Relief funds. | C．Economic growth. | D．Fast delivery. |
| A．No healthy organisms are left there. | B．Salmon there lose the ability to lay eggs. |
| C．Salmon there go short of nutritious food. | D．The temperature remains above 18℃ till now. |
| A．Measures to protect salmon are effective. | B．Salmon will not find a way out of the crisis. |
| C．The amount of salmon will increase greatly. | D．Salmon are likely to leave the river for survival. |
10 . People have been wondering why elephants do not develop cancer even though they have lifespans(寿命)that are similar to humans, living for around 50 to 70 years.
Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors(肿瘤)developing. To be precise, they found 20 copies of an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.
According to the research, the extra copies of the gene improved the animal’s sensitivity to DNA damage, which lets the cells quickly kill themselves when damaged before they can go on to form deadly tumors.
“An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals,” the study author Dr Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous(癌变的),large creatures with a long lifespan like whales and elephants should have a greater risk of developing cancer than humans and mice. But across species, the risk of cancer does not show a connection with body mass.
This phenomenon was found by Oxford University scientist Richard Peto in the 1970s and later named “Peto’s paradox(悖论)”. Biologists believe it results from larger animals using protection that many smaller animals do not. In the elephant’s case, the making of TP53 is nature’s way of keeping this species alive.
The study also found that when the same genes were brought to life in mice, they had the same cancer resistance as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers spreading or even developing in the first place.
“Nature has already figured out how to prevent cancer,” said Joshua Schiffman, a biologist at the School of Medicine, University of Utah, US. “It’s up to us to learn how different animals deal with the problem so that we can use those strategies to prevent cancer in people.”
1. Why are elephants unlikely to develop cancer?| A．Certain genes in their body kill existing tumors. |
| B．They have a rather large body size. |
| C．They carry many genes to prevent tumors developing. |
| D．Their genes suffer no DNA damage. |
| A．The huge body mass. |
| B．Deadly tumors. |
| C．Cells killing themselves. |
| D．Sensitivity to DNA damage. |
| A．The risk of cancer is not related to body size. |
| B．Larger animals have protection from TP53. |
| C．Larger animals suffer the same risk of cancer as smaller ones. |
| D．The larger animals are, the bigger risk of cancer they will have. |
| A．Depending on nature is surely enough to fight against cancer. |
| B．The TP53 genes have proved useful in stopping cancer in people. |
| C．The extra copies of elephants’ genes are used to cure cancer patients. |
| D．Humans are expected to prevent cancer with the making of TP53. |
