Most people think of zoos as safe heavens for animals, where problems such as difficulty finding food and avoiding predators (食肉动物) don’t exist. Therefore, animals in zoos should live to a ripe old age.
But that may not be true for the largest land animals on earth. Scientists have known that elephants in zoos often suffer from poor health. They develop diseases and they are even unable to have babies.
To learn more about how captivity (圈养) affects elephants, a team of international scientists compared the lifespans (寿命) of the zoo-born elephants with the lifespans of thousands of wild elephants. They also compared some Asian elephants living in zoos with some Asian elephants which work in logging camp (伐木场), over almost the same time period.
The team found that elephants born in zoos lived an average of 16.9 years, but elephants that died of natural causes lived an average of 56 years. Asian elephants followed a similar pattern. In zoos, they lived 18.9 years, while those in the logging camp lived 41.7 years.
Scientists don’t yet know why wild elephants seem to live so much better than their zoo-raised counterparts (同类). Georgia Mason, a biologist at the University of Guelph in Canada, who led the study, thinks stress and obesity (肥胖) may be to blame. Zoo elephants don’t get the same kind of exercise they would in the wild. Elephants’ social lives are also much different in zoos than in the wild, where they live in large family groups.Most people believe that________.
| A．animals in zoos should live a longer life |
| B．zoos are not good for animals to live in |
| C．zoos are not suitable for large animals |
| D．captivity can affect animals in many ways |
The purpose of the international scientists is_________.
| A．to compare the lifespans of different animals |
| B．to find out how captivity affects elephants |
| C．to learn the lifespans of male and female elephants |
| D．to compare the lifespans of elephants in different places |
Which elephants live the longest according to the study?
| A．Elephants born in zoos. |
| B．Elephants that live in the wild. |
| C．Elephants that work in logging camps. |
| D．Female Asian elephants in logging camps. |
We can infer from the passage that_________.
| A．elephants in zoos suffer less stress than those in the wild |
| B．elephants in zoos live an easy life |
| C．social lives are not important to elephants |
| D．zoo life can be stressful to elephants |
What are the advantages to elephants in the wild according to the passage?
| A．They face fewer problems. | B．They can find food more easily. |
| C．They live in large social groups. | D．They are freer to move. |
Planning a visit to the UK? Here we help with ways to cut your costs.
AVOID BIG EVENTS Big sporting events, concerts and exhibitions can increase the cost of accommodation and make it harder to find a room. A standard double room at the Thistle Brighton on the final Friday of the Brighton Comedy Festival (19 Oct.) cost £169.15 at Booking.com. A week later, the same room cost £118.15.
If you can be flexible and want to know dates to avoid—or you’re looking for a big event to pass your time—check out sites such as Whatsonwhen.com, which allow you to search for events in the UK by city, date and category.
STAYAWAY FROM THE STATION If traveling to your destination by train, you may want to find a good base close to the station, but you could end up paying more for the sake of convenience at the start of your holiday.
Don’t be too choosy about the part of town you stay in. Booking two months in advance, the cheapest room at Travelodge’s Central Euston hotel in London for Saturday 22 September was £95.95. A room just a tube journey away at its Covent Garden hotel was £75.75. And at Farringdon, a double room cost just £62.95.
LOOK AFTER YOURSELF Really central hotels in cities such as London, Edinburgh and Cardiff can cost a fortune, especially at weekends and during big events. As an alternative consider checking into a self-catering flat with its own kitchen. Often these flats are hidden away on the top floors of city centre buildings. A great example is the historic O’Neill Flat on Edinburgh’s Royal Mile, available for £420 for five days in late September, with room for four adults.
GET ON A BIKE London’s ‘Boris bikes’ have attracted the most attention, but other cities also have similar programmes that let you rent a bicycle and explore at your own pace, saving you on public transport or car parking costs.
Among the smaller cities with their own programmes are Newcastle (casual members pay around £1.50 for two hours) and Cardiff (free for up to 30 minutes, or £5 per day). (358 words) The Brighton Comedy Festival is mentioned mainly to show big events may __________.
| A．help travelers pass time |
| B．attract lots of travelers to the UK |
| C．allow travelers to make flexible plans |
| D．cause travelers to pay more for accommodation |
“Farringdon” in Paragraph 5 is most probably __________.
| A．a hotel away from the train station |
| B．the tube line to Covent Garden |
| C．an ideal holiday destination |
| D．the name of a travel agency |
The passage shows that the O’Neill Flat __________.
| A．lies on the ground floor |
| B．is located in central London |
| C．provides cooking facilities for tourists |
| D．costs over £100 on average per day in late September |
Cardiff’s program allows a free bike for a maximum period of __________.
| A．half an hour | B．one hour | C．one hour and a half | D．two hours |
The main purpose of the passage is __________.
| A．to tell visitors how to book in advance |
| B．to supply visitors with hotel information |
| C．to show visitors the importance of self-help |
| D．to offer visitors some money-saving tips |
Electrical devices(仪器)could soon use power made by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking , British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person’s knee. As the person walks ,the device captures energy each time the person slows down. To do this ,the device helps with the slowing sown movement of the leg, the movements of the walking person push parts of a small machine that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also he used in hospitals to operate heart pacemakers(起博器), it could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy, but the researchers hope to make a lighter, less costly version, An improved version should be ready in one year.
The developers hope the device will one day help developing countries; nearly twenty five percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania, He created a bag carried on a person’s back that also produces power from walking. The knee device does not produce as much electricity as the bag, but the bag requires the walker to carry a load of twenty to thirty kilograms.. The second paragraph mainly talks about
| A．who developed the device | B．how the device works |
| C．several possible uses for the devices | D．how much electricity the device can produce |
. What is the disadvantage of the experimental version of the device?
| A．It is too heavy for the walker to bear | B．It is too complex for people to use |
| C．It is too expensive for most people to afford | D．It will slow down one’s walking speed |
. Compared with the device designed by Larry Rome, this new device
| A．produces power without adding more loads to the walker |
| B．can produce more power in a much shorter time |
| C．needs to be equipped with a battery |
| D．can help the walker walk faster |
. From the passage, we can learn that the electrical device can
| A．help housewives operate the washing machine |
| B．make it much easier for us to go online |
| C．produce more electricity than that invented by Larry Rome |
| D．be applied in medical fields to operate heart pacemakers |
. What would be the best title for the passage
A. First device powered by walking will soon be on the market
B. Advanced technology brings in a new way to operate heart pacemakers
C. Device gives new meaning to the idea of power walking
D Human energy will become a main source of electricity
Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes(酶)that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic (酸性的). To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat . Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism(新陈代谢) becomes inactive, and then result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious(恶性的) circle in its tracks, people need to consume food and supplements that will neutralize （使…中和）the acid already accumulated in body. Eating the right types of raw and whole foods can help. it’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself , you need to take an active approach... What is the main purpose of this passage?
| A．To advocate eating more raw and whole foods |
| B．To tell the differences between raw and processed foods |
| C．To inform people of the harm of processed foods |
| D．To warn people of the problem of obesity |
. It can be inferred from Para. 2 that
| A．it is essential for people to protect their vital organs |
| B．foods with natural enzymes help people keep fit |
| C．we’d better be cautious about raw and whole foods |
| D．giving up cooked and refined foods is a new lifestyle |
. Processed foods are unhealthy because they
| A．destroy body’s cells | B．are difficult to digest |
| C．may lead to obesity | D．stop body’s metabolism |
. What is likely to be talked about following the last paragraph?
| A．Active approaches to avoid acid . | B．Different causes of acid accumulation. |
| C．Correct ways to cook raw foods . | D．Suitable types of raw and whole foods. |
. What can we learn from the text?
| A．Processed foods are good for our appetite mechanism |
| B．Eating the right types of raw and whole foods does good to our body |
| C．The accumulation of acid in the digestive tract makes digestion more effective |
| D．Processed foods also comfort the digestive tract |
Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number. Some are pets, and offer him companionship, some give protection, and some do hard work which man can not do for himself. Dogs , which serve man in all three capacities(能力), are found in various species in all countries of the world. The Husky can live in the cold polar regions,and the Saluki is at home in the hottest parts of Central Africa.The inhabitants (居民)of certain countries are dependent for their very lives on the camel. In the West Indies the little donkey, strong and sure-footed, carrying heavy loads even in mountainous, places, is a familiar sight.
Trained and tamed for many generations, domestic animals are not accustomed to roaming in search of food and shelter. They look to their masters to provide for their needs, and as long as these are supplied, they are content to do what their masters require.
All domestic animals need proper food .It must be suitable for them, sufficient in quantity, fresh and clean. Some people feed a pet dog or cat on odds and ends of table scraps(剩饭), and then wonder why the animal seems tired and dull. The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding. Containers for food and water must be washed regularly if the animal is to maintain good health.
Even well-cared-for animals may sometimes fall ill. If this happens, the wise master seeks the best advice he can get. All sorts of medicines and treatments are available for sick animals, and in some countries organizations exist to provide them free of at a cheap price. Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health.What main idea does the author want to convey in the first paragraph?
| A．There exists thousands of species of animals in the world. |
| B．Man came to establish a close relationship with a number of animals. |
| C．In some regions a donkey seems to be a very useful beast. |
| D．An animal will be useless unless domesticated. |
When an animal doesn’t get enough food, it will probably
| A．refuse to obey its master | B．immediately fall ill |
| C．require its master to offer some food | D．seek for food on its own |
Which of the following is NOT true of dogs according to the passage?
| A．They can act as friends, guards ,and servants to man. |
| B．They have great adaptation for the environment. |
| C．There live a great variety of species of dogs on the globe. |
| D．The Husky and the Saluki are the strongest species ever known in the world |
To keep a domestic animal physically fit, its owner is advised
| A．not to hesitate to spend enormous amount of money on it |
| B．to pay attention to its proper feeding |
| C．not to allow it to take excessive amounts of exercise |
| D．to join some sort of pet-keeping organizations |
Which of the following would be the best title for this passage?
| A．Domesticated Animals-Man’s Best Friends | B．Proper Diet- the Road to Health |
| C．The Advantages of Raising Domestic Animals | D．Some Tips on Pet- keeping |
Looking back on my childhood, I am convinced that naturalists are born and not made. Although we were brought up in the same way, my brothers and sisters soon abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental math.
Before World War I we spent out summer holidays in Hungary. I have only the dim(模糊的)memory of the house we lived in, of my room and my toys, Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects.
I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into various investigations. I love discussing my favorite topics and enjoy burning the midnight oil reading about other people’s observations and discoveries.Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle. Because it all seems to fit together. This has resulted in my publishing 300 papers and books, which some may light honor, with the title of scientific research.
But curiosity, a keen eye ,a good memory and enjoyment of the animal and plant world do not make a scientist: one of the outstanding and essential qualities required is self-discipline, a quality I lack, A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds.According to the author, a born naturalist should first of all be
| A．full of ambition | B．self-disciplined | C．full of enthusiasm | D．knowledgeable |
The first paragraph tells us that the author
| A．lost his hearing when he was a child |
| B．didn’t like his brothers and sisters |
| C．was interested in flowers and insects in his childhood |
| D．was born to a naturalist’s family |
The author says that his a naturalist rather than a scientist probably because he thinks he
| A．just reads about other people’s observations and discoveries |
| B．lacks some of the qualities required of scientist |
| C．has a great deal of trouble doing mental arithmetic |
| D．comes up with solutions in most natural ways. |
The author can’t remember his clearly because
| A．He didn’t live very long with them | B．He was too young when he lived with them |
| C．The family was extremely large | D．He was fully occupied with observing nature |
Which of the following statements is true?
| A．The author believes that a born naturalist cannot be a scientist |
| B．The author read a lot of books about the natural world and oil industry |
| C．The author’s brothers and sisters were good at music and languages |
| D．The author spent a lot of time working on riddles. |