1 . Science can’t explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer.
Any owner will tell you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A 2002study by Karen Allen of the State University of New York measured stress (紧张) levels and blood pressure in people — half of them pet owners — while they performed 5minutes of mental arithmetic (算术) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with a pet. People with pets did it best. Those tested with their animal friends had smaller change in blood pressure and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes than when doing in front of other companions. It seems people feel more relaxed (放松) around pets, says Allen, who thinks it may be because pets don’t judge.
A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put on a diet program. On average, people lost about 11 pounds, or 5% of their body weight. Their dogs did even better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn’t lose any more weight than those without dogs but, say researchers, got more exercise overall — mostly with their dogs — and found it worth doing.
1. What does the text mainly discuss?| A．What pets bring to their owners? |
| B．How pets help people calm down? |
| C．People’s opinions of keeping pets. |
| D．Pet’s value in medical research. |
| A．he has a pet companion |
| B．he has less stress of work |
| C．he often does mental arithmetic |
| D．he is taken care of by his family |
| A．They have lower blood pressure. |
| B．They become more patient. |
| C．They are less nervous. |
| D．They are in higher spirits. |
| A．people with dogs did more exercise |
| B．dogs lost the same weight as people did |
| C．dogs liked exercise much more than people did |
| D．people without dogs found the program unhelpful |
2 . Eating too much fatty food, exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately：the air you breathe.
Previous studies have linked high exposure (暴露) to environmental pollution to an increased risk of heart problems，but two analyses now show that poor air quality can lead to heart attack or stroke (中风) within as little as a few hours after exposure. In one review of the research, scientists found that people exposed to high levels of pollutants (污染物) were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. A separate study of stroke patients showed that even air that the U. S. Environmental Protection Agency (EPA)considers to be of “moderate” (良好) quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.
The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.
1. The text mainly discusses the relationship between ________.| A．heart problems and air quality |
| B．heart problems and exercising |
| C．heart problems and smoking |
| D．heart problems and fatty food |
| A．relatively high | B．extremely low |
| C．relatively low | D．extremely high |
| A．Eating fatty food has immediate effects on your heart. |
| B．The EPA conducted many studies on air quality. |
| C．Moderate air quality is more harmful than smoking. |
| D．Stricter regulations on pollutants should be made. |
| A．inform | B．persuade |
| C．describe | D．entertain |
3 . Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realize just how much unnecessary material we are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.
1. What does the underlined word “over-consumption” refer to?| A．Using too much packaging. |
| B．Recycling too much waste. |
| C．Making more products than necessary. |
| D．Having more material than is needed. |
| A．the tendency of cutting household waste |
| B．the increase of packaging recycling |
| C．the rapid growth of supermarkets |
| D．the fact of packaging overuse |
| A．Unpackaged products are of bad quality. |
| B．Supermarkets care more about packaging. |
| C．It is improper to judge quality by packaging. |
| D．Other products are better packaged than food. |
| A．Fighting wastefulness is difficult. |
| B．Needless material is mostly recycled. |
| C．People like collecting recyclable waste. |
| D．The author is proud of his consumer culture. |
In the southwest African country of Namibia, and the Sahara lands of Mali further north, the desert elephant does just that.
Although not regarded as a separate species from the African elephant, the desert cousin differs in many ways. Their bodies are smaller, to absorb less heat, and their feet are larger for easier walking across sandy surfaces. They are taller, to reach higher branches. They have shorter tusks (象牙), and most importantly, longer trunks to dig for water in riverbeds.
Desert elephants can travel over 70 kilometers in search for feeding grounds and waterholes, and have a larger group of families. They drink only every 3-4 days, and can store water in a “bag” at the back of their throat, which is only used when badly needed. Desert elephants are careful feeders---they seldom root up trees and break fewer branches, and thus maintain what little food sources are available. Young elephants may even eat the dung (粪便) of the female leader of a group when facing food shortage. During drought they are unlikely to give birth to their young but with good rains the birthrate will increase greatly. Desert elephants have sand baths, sometimes adding their own urine (尿液) to make them muddy!
As we continue to overheat our weak planet, it can only be hoped that other animal species will adapt as extraordinarily well to change as the desert elephant.
1. The underlined part in Paragraph 2 means “_____”.
| A．remains in the African countries |
| B．drinks 120 liters of water a day |
| C．manages to live in desert areas |
| D．eats 150 kilograms of food daily |
| A．rarely ruin trees |
| B．drink only every 3-4 days |
| C．search for food in large groups |
| D．protect food sources for their young |
| A．stories and explanation |
| B．facts and descriptions |
| C．examples and conclusion |
| D．evidence and argument |
| A．Overheating the earth can be stopped. |
| B．Not all animal species are so adaptable. |
| C．The planet will become hotter and hotter. |
| D．Not all animals are as smart as desert elephants. |
5 . Watching some children trying to catch butterflies one hot August afternoon, I was reminded of an incident in my own childhood．When I was a boy of 12 in South Carolina, something happened to me that cured me forever of wanting to put any wild creature in a cage.
We lived on the edge of a wood, and every evening at dusk the mockingbirds would come and rest in the trees and sing. There isn’t a musical instrument made by man that can produce a more beautiful sound than the song of the mockingbird.
I decided that I would catch a young bird and keep it in a cage and in that way would have my own private musician.
I finally succeeded in catching one and put it in a cage. At first, in its fright at being captured, the bird fluttered about the cage, but eventually it settled down in its new home. I felt very pleased with myself and looked forward to some beautiful singing from my tiny musician.
I had left the cage out on our back porch, and on the second day of the bird’s captivity(囚禁) my new pet’s mother flew to the cage with food in her mouth. The baby bird ate everything she brought to it. I was pleased to see this. Certainly the mother knew better than I how to feed her baby.
The following morning when I went to see how my captive was doing, I discovered it on the floor of the cage, dead. I was shocked! What had happened! I had taken excellent care of my little bird, or so I thought.
Arthur Wayne, the famous ornithologist, happened to be visiting my father at the time, hearing me crying over the death of my bird, explained what had occurred. “A mother mockingbird, finding her young in a cage, will sometimes bring it poison berries. She thinks it better for her young to die than to live in captivity.”
Never since then have I caught any living creature and put it in a cage. All living creatures have a right to live free.
1. Why did the writer catch a mockingbird when he was a boy of 12?| A．He had just got a new cage. | B．He liked its beautiful feather. |
| C．He wanted it to sing for him. | D．He wanted a pet for a companion. |
| A．was frightened to death | B．ate the poisonous food its mother gave it |
| C．refused to eat anything | D．drank the poisonous water by mistake |
| A．a religious person | B．a kind person |
| C．a schoolmaster | D．an expert in birds |
| A．Freedom is very valuable to all creatures. |
| B．All birds put in a cage won’t live long. |
| C．You should keep the birds from their mother. |
| D．Be careful about food you give to baby birds. |
6 . Far from the land of Antarctica, a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.
For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.
Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.
The fish were taken from seawater that had a temperature of -1.88℃ and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05℃. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.
The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.
Study showed that it is an unusual kind of protein. It has many small sugar molecules held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein. Or AFGP.
1. What is the text mainly about?| A．The terrible conditions in the Antarctic. |
| B．A special fish living in freezing waters. |
| C．The ice shelf around Antarctica. |
| D．Protection of the Antarctic cod. |
| A．The seawater has a temperature of -1.88℃. |
| B．It loves to live in the ice-salt mixture. |
| C．A special protein keeps it from freezing. |
| D．Its blood has a temperature lower than -2.05℃. |
| A．A type of ice-salt mixture. | B．A newly found protein. |
| C．Fish blood. | D．Sugar molecule. |
| A．sugar | B．ice |
| C．blood | D．molecule |
Domestic (驯养的) horses now pull ploughs, race in the Kentucky Derby, and carry police. But early horses weren’t tame (驯服的) enough to perform these kinds of tasks. Scientists think the first interactions humans had with horses were far different from those today.
Thousands of years ago, people killed the wild horses that lived around them for food. Over time, people began to catch the animals and raise them. This was the first step in domestication.
As people began to tame and ride horses, they chose to keep those animals that had more desirable characteristics. For example, people may have chosen to keep horses that had a gentle personality so they could be ridden more easily. People who used horses to pull heavy loads would have chosen to keep stronger animals. Characteristics like strength are partly controlled by the animals’ genes. So as the domesticated horses reproduced, they passed the characteristics on to their young. Each new generation of houses would show more of these chosen characteristics.
Modern day horse breeds come in a wide variety of shapes and sizes. This variety didn’t exist in the horse population before domestication. The Shetland horse is one of the smallest breeds—typically reaching only one meter tall. With short, strong legs, the animals were bred to pull coal out of mine shafts (矿井) with low ceilings. Huge horses like the Clydesdale came on the scene around 1700. People bred these heavy, tall horses to pull large vehicles used for carrying heavy loads.
The domestication of horses has had great effects on societies. For example, horse were important tools in the advancement of modern agriculture. Using them to pull ploughs and carry heavy loads allowed people to farm more efficiently. Before they were able to ride horses, humans had to cross land on foot. Riding horses allowed people to travel far greater distance in much less time. That encouraged populations living in different areas to interact with one another. The new from of rapid transportation helped cultures spread around the world.
1. Before domestication horses were ______.
| A．caught for sports | B．hunted for food |
| C．made to pull ploughs | D．used to carry people |
| A．it is smaller than the Clydesdale horse | B．horse used to have gentle personalities |
| C．some horses have better shaped than others | D．horses were of less variety before domestication |
| A．carrying heavy loads | B．changing farming methods |
| C．serving as a means of transport | D．advancing agriculture in different areas |
| A．why humans domesticated horses | B．how humans and horses needed each other |
| C．why horses came in different shapes and sizes | D．how human societies and horses influenced each other |
8 . The Crowne Plaza Hotel in Copenhagen is offering a free meal to any guest who is able to produce electricity for the hotel on an exercise bike linked to a generator (发电机). The idea is to get people fit and reduce their carbon footprint. Guests will have to produce at least 10 watt hours of electricity — roughly 15 minutes of cycling for someone of average fitness. Guests staying at Plaza Hotel will be given meal tickets worth $ 36 once they have produced 10 watt hours of electricity. The bicycles will have smart phones attached to the handlebars measuring how much power is being generated for the hotel.
The plan, a world-first, will start on 19 April and run for a year. Only guests staying at the hotel will be able to take part. Frederikke Toemmergaard，hotel spokeswoman, said, “Many of our visitors are business people who enjoy going to the gym. There might be people who will cycle just to get a free meal, but generally I don’t think people will take advantage of our programme.”
Copenhagen has a long-standing cycling tradition and 36 % of locals cycle to work each day, one of the highest percentages in the world, according to the website visitcopenhagen. dk. US environmental website treehugger. com recently voted Copenhagen the world’s best city for cyclists. “Because Copenhagen is strongly connected with cycling, we felt the bicycle would work well as a symbol of the hotel’s green profile (形象).”
If successful，the electric bicycle meal programme will be spread to all Crowne Plaza hotels in the UK, the hotel said in a statement.
1. What is the main purpose of the free meal programme?| A．To promote the hotel’s green concept. |
| B．To make the city known to the world. |
| C．To attract people to the hotel restaurant. |
| D．To get guests to stay longer at the hotel. |
| A．By becoming a professional cyclist. |
| B．By cycling to produce some electricity. |
| C．By linking a smart phone to a bicycle. |
| D．By monitoring his or her carbon footprint. |
| A．The poor local people. |
| B．The environment activists. |
| C．Health-conscious hotel guests. |
| D．Visitors fond of Copenhagen food. |
| A．best chain hotels |
| B．greenest natural environments |
| C．longest bike paths |
| D．highest rates of people cycling to work |
At various times in history, the White House has been known as the “President’s Palace”, the “President’s House”, and the “Executive Mansion”. President Theodore Roosevelt officially gave the White House its current name in 1901.
The White House receives approximately 6,000 visitors a day.
With five full-time chefs, the White House kitchen is able to serve as many as 140 guests and hors d’oeuvres (开胃菜) to more than 1,000 people.
The White House requires 570 gallons of paint to cover its outside surface.
For recreation, the White House has a variety of facilities available to people who live in, including a tennis court, a jogging track, a swimming pool, a movie theater and a bowling lane.
The first US President to live in the White House was John Adams. Adams and his family moved to the White House in 1800, when the decoration of the building was not finished. And it was not until during Thomas Jefferson’s term (1801-1809) that the decoration was finally completed.
President John Tyler (1841-1845) was the first president to have his photo taken. President Theodore Roosevelt (1901-1909) was not only the first president to ride in an automobile, but also the first president to travel outside the country when he visited Panama (巴拿马). President Franklin Roosevelt (1933-1945) was the first president to ride in an airplane.
1. In normal cases, how many people visit the White House per day?
| A．1,000. | B．6,000. | C．140. | D．570. |
| A．John Adams. | B．John Tyler. |
| C．Thomas Jefferson. | D．Theodore Roosevelt. |
| A．Between 1801 and 1809. | B．Between 1901 and 1909. |
| C．Between 1841 and 1845. | D．Between 1933 and 1945. |
10 . One moment it was quiet and calm in the forest, the next, the air was charged with tension. The elephant had heard the distant alarm calls of animals and her mood suddenly changed. I urged the elephant deeper into the forest. We sounded like a forest fire-crackling, snapping, trailblazing. But through all the noise came a sharp warning cry. The elephant stopped and we heard it again — the tell-tale call of a spotted deer.
I looked quickly around the shadows of the forest. Rays of sunlight shone through tree branches, beneath which the patchwork (交错) of green plants and shadows-within-shadows would make tiger stripes (条纹) look more attractive. Apart from an occasional noise from the elephant’s stomach, the forest was silent.
Gradually, the tension slipped from our bodies. The elephant seized a nearby branch and put it into her mouth. I reached forward and gently moved my hand over the elephant’s neck; there was a soft part, free of wrinkles and hairs, behind her ear.
This was my fourth time to sense the aura of the forest in Corbett, although I saw no tigers in the end. Located at the foot of the Himalayan mountains, Corbett is home to about 135 Bengal tigers, but the forest seemed to be guarding their whereabouts(出没处), a silent reminder of their secrecy and rarity. Still, I was happy enough touching the elephant behind the ear. If I had so desperately wanted to see a tiger, I could have gone to a zoo. After all, spotting tigers merely confirms their beauty; tracking them can make you aware of something more.
1. Which of the following was a clear signal of alarm?| A．The elephant stopped. |
| B．A spotted deer called. |
| C．The elephant seized a branch. |
| D．The forest was silent for a while. |
| A．describing various sounds |
| B．comparing different animals |
| C．listing different activities |
| D．introducing various plants |
| A．To see the diversity. |
| B．To enjoy the scenery. |
| C．To feel the atmosphere. |
| D．To experience the freedom. |
| A．Seeing a Bengal tiger is quite thrilling. |
| B．It is very time-consuming to travel in Corbett. |
| C．It is really worthwhile to study the animals in Corbett. |
| D．The process of finding Bengal tigers is most appealing. |
