Wolves travel shorter distances and move slower during snowfall events, according to new research by University of Alberta biologists. The effects were most pronounced at night, when wolves hunt, and behaviour returned to normal within a day. Wolf tracks across snow in northeastern Alberta.
“Our findings suggest that there is something about actively falling snow that causes wolves to slow down,” said Amanda Droghini, a former MSc student in the Department of Biological Science and lead author on the study. “We don’t know the exact mechanism behind that. It’s unlikely that they were staying still because they were feasting on a recent kill. Instead, active precipitation（降雪量）might affect wolves’ hunting abilities. Like rain, snow clears the air column of scent molecules. So, maybe falling snow makes it harder for wolves to detect the smell of prey.”
Over the course of two winters, the researchers used remote cameras to disclose snowfall events and estimate snow depth. To study wolf movement, they collected telemetry（测距仪） data from 17 wolves to calculate travel speed and duration, as well as resting periods. It is the first study to examine how large flesh-eating animals respond to snowfall events.
With the effects of climate change on precipitation in the north forest region uncertain, it is difficult to predict the implications for wolf populations. Studies such as these increase our understanding of how large mammals react to normal snowfall events, but the type and amount of winter precipitation will likely have an impact on animal behavior and the energetic cost of movement.
“Winter is already challenging for many wildlife species because moving through snow requires more energy. Snow can also make it harder for animals to access food resources,” said Droghini, who conducted the research under the supervision of Professor Stan Boutin, Alberta Biodiversity Conservation Chair.
“Anything that increases those costs, such as increased rain-on-snow events, could lead to lacking in nutrition, poor body condition, and even starvation as animals are unable to make up for those additional costs. That is one of the worst-case scenarios（设想）but, in truth, we know very little about potential changes to precipitation patterns and how wildlife will respond to those changes.”
1.Which one is the closest to the underlined word “disclose” in paragraph 3?
A. identify B. overlook
C. overcome D. disturb
2.Increased precipitation might have the following effects on animals except _______.
A. poor health B. nutritional shortage
C. hunting ability D. losing appetite(食欲)
3.It can be inferred from the passage that _______.
A. researchers find it difficult to predict the implications for wolves
B. researchers have found the mechanism behind the phenomenon
C. researchers have collected data by using modern technologies
D. researchers will most probably go on studying the phenomenon
4.Where can we probably find this article?
A. tourist leaflets. B. sports newspapers.
C. science magazines. D. advertising posters.
高一英语阅读理解中等难度题
Wolves travel shorter distances and move slower during snowfall events, according to new research by University of Alberta biologists. The effects were most pronounced at night, when wolves hunt, and behaviour returned to normal within a day. Wolf tracks across snow in northeastern Alberta.
“Our findings suggest that there is something about actively falling snow that causes wolves to slow down,” said Amanda Droghini, a former MSc student in the Department of Biological Science and lead author on the study. “We don’t know the exact mechanism behind that. It’s unlikely that they were staying still because they were feasting on a recent kill. Instead, active precipitation（降雪量）might affect wolves’ hunting abilities. Like rain, snow clears the air column of scent molecules. So, maybe falling snow makes it harder for wolves to detect the smell of prey.”
Over the course of two winters, the researchers used remote cameras to disclose snowfall events and estimate snow depth. To study wolf movement, they collected telemetry（测距仪） data from 17 wolves to calculate travel speed and duration, as well as resting periods. It is the first study to examine how large flesh-eating animals respond to snowfall events.
With the effects of climate change on precipitation in the north forest region uncertain, it is difficult to predict the implications for wolf populations. Studies such as these increase our understanding of how large mammals react to normal snowfall events, but the type and amount of winter precipitation will likely have an impact on animal behavior and the energetic cost of movement.
“Winter is already challenging for many wildlife species because moving through snow requires more energy. Snow can also make it harder for animals to access food resources,” said Droghini, who conducted the research under the supervision of Professor Stan Boutin, Alberta Biodiversity Conservation Chair.
“Anything that increases those costs, such as increased rain-on-snow events, could lead to lacking in nutrition, poor body condition, and even starvation as animals are unable to make up for those additional costs. That is one of the worst-case scenarios（设想）but, in truth, we know very little about potential changes to precipitation patterns and how wildlife will respond to those changes.”
1.Which one is the closest to the underlined word “disclose” in paragraph 3?
A. identify B. overlook
C. overcome D. disturb
2.Increased precipitation might have the following effects on animals except _______.
A. poor health B. nutritional shortage
C. hunting ability D. losing appetite(食欲)
3.It can be inferred from the passage that _______.
A. researchers find it difficult to predict the implications for wolves
B. researchers have found the mechanism behind the phenomenon
C. researchers have collected data by using modern technologies
D. researchers will most probably go on studying the phenomenon
4.Where can we probably find this article?
A. tourist leaflets. B. sports newspapers.
C. science magazines. D. advertising posters.
高一英语阅读理解中等难度题查看答案及解析
In ancient times, people rarely travelled long distances and most farmers only travelled________ the local market.
A．longer than B．more than C．as much as D．as far as
高一英语单项填空中等难度题查看答案及解析
In ancient times, people rarely travelled long distances and most farmers only traveled ______ the local market.
A．longer than B．more than C．as much as D．as far as
高一英语单项填空中等难度题查看答案及解析
In ancient times, people rarely travelled long distances and most farmers only traveled______________ the local market.
A．longer than B．more than C．as much as D．as far as
高一英语单项填空中等难度题查看答案及解析
Everyone can remember the things and the people ______made them deeply moved during the earthquake in Wenchuan, Sichuan Province
A. who B. which C. / D. that
高一英语单项填空中等难度题查看答案及解析
During most of the Stone Age, people lived by hunting and gathering their food in Egypt. They traveled1. place to place in the Nile Valley, harvesting wild grasses, digging up roots, and finding bird eggs. They fished in the Nile River and gathered reeds (芦苇杆) from its shores 2. (make) baskets.
By around 10,000 BC, Egypt had gotten so3.(crowd) that people were forced to begin growing their own food. People also began to keep cows, sheep and pigs that they4.. (possible) bought from their West Asian neighbors. This is5.we call the Agricultural Revolution today.
But farming brought many other6. (change) too. Once people started planting crops, they had to defend the land7.their crops were. There was more fighting. Soon people began to band together into larger communities that could fight better. They chose leaders. 8.(see) the advantages that farming brought them, those leaders forced more and more people to start farming and settle down under their leadership.
Around 3,500 BC, donkeys9.(use) to carry ivory and gold north into Egypt, and to carry Egyptian things south to Sudan and Kenya. That made both places 10.(rich) than they were before. Together, the trade and the farming helped to start the Old Kingdom.
高一英语短文填空中等难度题查看答案及解析
Imagine a relay race. During this race, an athlete holds a stick as he runs a certain distance. Then he passes the stick to the next runner. That person runs faster, and then passes the stick to a third runner. Now imagine that the runners do not pass a stick. Instead they pass shiny silk, as well as gold, fruit, and glass. Imagine that the race does not move forward in just one direction. Instead the runners go back and forth along a road. They trade goods all along this route (路线) and at each end of it. Now imagine that the runners are businessmen. They lead caravans (商队) or lines of camels that carry things to sell. They travel on the ancient Silk Road to earn their living.
The Silk Road was a complex trade network. It passed through thousands of cities and towns. It stretched from eastern China, across central Asia and the Middle east, to the Mediterranean Sea. Businessmen traveled on the Silk Road from about 200 B.C. to about 1300 A.D.. Then sea travel began to offer new routes. Some people called the Silk Road the world’s longest highway. However, the Silk Road included many routes--not just one smooth path. The routes ran through mountains and across deserts. They passed through an area that now includes 18 countries. The Silk Road had many dangers. These dangers ranged from hot sun and deep snow to thieves and wars. Only expert traders could survive.
The Silk Road got its name from its most prized goods. People used silk as money. They could pay taxes or buy goods with it. Traders carried more than just silk, though. They had gold, silver, and glass from Europe. People in the Middle East and Asia wanted these things. Businessmen also took horses from flat, grassy areas in central Asia and brought them to China and other areas. The horses changed the way people farmed and ran their armies. Indian businessmen traded salt and rare, beautiful stones. Chinese merchants traded medicine and china. They also traded paper, which quickly replaced animal skins in the west. Businessmen carried apples from central Asia to Rome. The Chinese had learned to combine different trees to create new kinds of fruit. They taught this science to others, such as the Romans. The Romans began to grow apples for food. The Silk Road led to worldwide commerce 2,000 years before the World Wide Web.
The people along the Silk Road did not share only goods. They also shared beliefs. Monks, priests, and other faith leaders taught their religions to others. The Silk Road created pathways for knowledge, diplomacy, and religion.
1.People turned to the sea for new routes after around 1300 A.D.because ________.
A. the Silk Road included many routes
B. the Silk Road passed through many areas
C. people traveled on the Silk Road for too long
D. there were more dangers along the Silk Road
2.Which of the following is closest to the meaning of the word prized in paragraph 3?
A. appropriate B. preserved
C. valuable D. useful
3.Which of the following statements is WRONG?
A. The Silk Road helped spread religions to more people.
B. The Silk Road gave people the idea to build highways.
C. Some people probably died while travelling.
D. Westerners probably used to write on animal skins.
4.In which column of a newspaper can we most probably read the article?
A. Science. B. Travel.
C. Sports. D. Culture.
高一英语阅读理解中等难度题查看答案及解析
People traveling long distances frequently have to decide whether they would prefer to go by land, sea, or air. Hardly can anyone positively enjoy sitting in a train for more than a few hours. Train carriages soon get crowded. Reading is only a partial solution, for the monotonous(单调的) rhythm of the wheels clicking on the rails soon makes you sleep. During the day, sleep comes in snatches. While at night you rarely manage to sleep. Inevitably you arrive at your destination almost exhausted.
Long car journey are even less pleasant, for it is quite impossible even to read. On motorways you can, at least, travel fairly safely at high speed, but more often than not, the greater span of the journey is spent on narrow, uneven roads which are crowded with traffic.
By comparison, trips by sea offer a great variety of civilized comforts. You can stretch your legs on the broad decks, play games, swim, meet interesting people and enjoy good food-always assuming, of course, that the sea is calm. If it is not and you are likely to get seasick, no form of transport could be worse. Even if you travel in ideal weather, sea journeys take a long time. Relatively few people are prepared to sacrifice up to a third of their holidays for the pleasure of traveling on a ship.
Airplanes have the reputation of being dangerous and a little expensive. But nothing can match them for speed and comfort. Traveling at a height of 30,000 feet and at over 500 miles an hour is a pleasant experience. For a few hours, you settle back in a deep armchair to enjoy the flight. The real relaxation can be a free film show and some other services. An airplane also offers you an unusual and breathtaking view of the world. You really see the shape of the land. If the landscape is hidden from the view, you can enjoy the extraordinary sight of unbroken cloud plains that stretch on for miles before you, while the sun shines brilliantly in a clear sky. The journey is so smooth that there is nothing to prevent you from reading or sleeping. However you decide to spend your time, one thing is certain: you will arrive at your destination fresh and untired.
1.The author indicates that reading can help lessen .
A. the boredom of being in the train
B. the tiresome clicking of the wheels
C. the sleeplessness during the journey
D. the poor atmosphere of the carriages
2.What can we learn about the long distance journey by car?
A. It is safe because the car usually goes at high speed.
B. It is unpleasant because reading is quite impossible.
C. It is exhausting because you seldom manage to sleep.
D. It is dangerous because the traffic is always too busy.
3.Traveling by air is quite different from traveling by other means in that .
A. traveling by air is not so tiring as the others
B. traveling by air brings more fun than the others
C. traveling by air is much more expensive than the others
D. traveling by air offers more time for sleep than the others
4.What's the purpose of writing this passage?
A. To introduce diverse ways of traveling.
B. To point out the best means of traveling.
C. To emphasize the advantages of traveling.
D. To introduce how to relax when traveling
高一英语阅读理解简单题查看答案及解析
Camels were ____ better than horses for travelling a long distance.
A．more B．far C．quite D．very
高一英语单项填空简单题查看答案及解析
Wolves are important animals in the traditions and stories of most Native American tribes. To Native Americans, wolves often represent bravery. The animals also are signs of strength, loyalty, and success at hunting. Other cultures--such as the ancient Celtic and Nordic peoples-also placed high value on wolves.
However, from the wolves in horror films to the wolves in children’s stories, wolves get a bum rap(不公正的惩罚) in both literature and English expressions.
To begin with, there is the term lone wolf. The lone wolf isn’t a bad person. But they like to do things on their own. However, the term can mean something less than desirable. Lone wolf makes you think the person doesn’t want to be around people because he or she dislikes them.
Now, let’s move on to the home.
Parents might criticize their children for wolfing down their food. In other words, the child eats very quickly and without care. And if someone says a child was raised by wolves, that child has bad manners and is behaving like a wild animal. A wolf at the door means someone to whom you owe money is waiting just outside your door.
By the way, there are two popular wolf-related expressions that come from Aesop, the ancient Greek storyteller.
The first is a wolf in sheep’s clothing. A wolf in sheep’s clothing describes someone who acts and looks nice on the outside but is bad on the inside.
Aesop’s other wolf fable also involves a shepherd, but not a hardworking one. He is known as the boy who cried wolf. People who cry wolf are not trusted. People are so familiar with this story, you simply have to say cry wolf for them to know what you mean.
1.According to the passage, which group of people may think wolves are bad animals?
A. The ancient Nordic people B. The ancient Celtic people
C. Native Americans D. The English people
2.Which of the following can describe a person who often acts alone?
A. A wild wolf B. A lone wolf
C. A wolf at the door D. A wolf in sheep’s clothing
3.What may you probably mean by saying someone cries wolf?
A. The person is selfish B. The person is a liar
C. The person is stubborn D. The person is a troublemaker
4.What is the passage mainly about?
A. Stories about wolves
B. The research on wolves
C. Expressions about wolves
D. The cultural differences about wolves
高一英语阅读理解中等难度题查看答案及解析