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Animal farming about half of all human-caused greenhouse gases.
A、count for
B、accounts for
C、count on
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The building of the first transcontinental system ______.
A．brought about a rapid growth of industry and farming in the west
B．attracted many visitors to the construction sites
C．attracted labourers from Europe
D．encouraged people to travel all over the country
(课外选材)
According to experts, the advantage of modified food is that it helps in preventing the occurrence of allergies and also has a long shelf life. However, a major portion of the population is against the consumption of genetically modified food and is concerned about its disadvantages. If you are also confused about the consumption of genetically modified food, read through the pros and cons given below and decide for yourself.
ADVANTAGES OF GENETICALLY MODIFIED FOODS
●One of the most prominent advantages of genetically modified food is that it helps in controlling the occurrence of certain diseases. Certain foods cause allergy to people. Their genetic modification alters the DNA system of these foods, thereby making them non-allergic.
●Another major advantage of such type of foods is that they grow faster than their traditionally grown counterparts. As a result, there is greater productivity and more food.
●A person need not bother about any additional costs, such as buying chemicals and pesticides, when it comes to genetically engineered food. The food is naturally pest-resistant.
●Farming these foods can be a great way to fight world hunger. Since these crops grow faster or more effectively, increased production would help countries wherein crops may not normally prosper because of less than desirable environmental conditions.
●The increased shelf life of these food products helps in reducing the quantity of rotten food.
DISADVANTAGES OF GENETICALLY MODIFIED FOODS
●The biggest disadvantage of genetically modified food is that they have harmful effects on the human body. The consumption of these genetically engineered foods can lead to development of diseases that are immune to antibiotics.
●Chances of developing cancer are high in people who regularly consume engineered food.
●Since it is an unnatural way of producing foods, there is an increased health hazard such as allergens, transfer of antibiotic resistance markers and unknown effects.
●Since the production of engineered food involves infusing animal genes in the crops and tampering with nature, it might not be good for consumption in the long run.
1. How does genetically modified food control the occurrence of certain diseases？{A; B; C}
A. By cross-pollinating.
B. By conventional crossbreeding.
C. By altering the DNA system of these foods.
2. Do farmers need to buy any chemicals and pesticides if they plant genetically modified food？{A; B; C}
A. Yes, they need to. Because the food is not resist to pests.
B. No, they don’t need to. Because the food is naturally pest-resistant.
C. No, they don’t need to. Because the chemicals and pesticides are provided by the government.
3. Which statement is not the advantage of genetically modified food？{A; B; C}
A. It may have harmful effects on human body.
B. Genetically modified food grows faster than their traditionally grown counterparts.
C. Farming genetically modified food can help fight world hunger.
4. What would happen to a person if he regularly consume genetically modified food？{A; B; C}
A. He would get cold.
B. He would lose some weight.
C. He would have cancer.
5. Which title is the best for this passage？{A; B; C}
A. Can genetically modified foods combat world hunger？
B. Genetically modified mood: our answer is no
C. Genetically modified foods: pros and cons
What chiefly distinguishes essays from articles may be in ______.
A．the different amount of words used in representation
B．the acute sensibility and keen insight of essayists
C．the distinction between animal and vegetable worlds
D．the variation of arguments about their meanings
The review study,"Organic Agriculture in the 21st Century,”is featured as the cover story for theFebruary issue of the journal Nature Plants. It is the first to compare organic and conventional agricultureacross the main goals of sustainability identified by the National Academy of Sciences: productivity,economics，and environment.
Critics have long argued that organic agriculture is inefficient，requiring more land to yield the sameamount of food. It's true that organic farming produces lower yields，averaging 10 to 20 percent less thanconventional. Advocates contend that the environmental advantages of organic agriculture far outweighthe lower yields，and that increasing research and breeding resources for organic systems would reduce theyield gap.Sometimes excluded from these arguments is the fact that we already produce enough food tomore than feed the world's 7.4 billion people but do not provide adequate access to all individuals
In some cases，organic yields can be higher than conventional. For example，in severe droughtconditions，which are expected to increase with climate change in many areas，organic farms can produceas good，if not better，yields because of the higher water-holding capacity of organically farmed soils.
What science does tell us is that mainstream conventional farming systems have provided growingsupplies of food and other products but often at the expense of other sustainability goals.
Conventional agriculture may produce more food，but it often comes at a cost to the environment.Biodiversity loss，environmental degradation，and severe impacts on ecosystem services have not onlyaccompanied conventional farming systems but have often extended well beyond their field boundaries.With organic agriculture，environmental costs tend to be lower and the benefits greater.
Overall，organic farms tend to store more soil carbon，have better soil quality， and reduce soil erosioncompared to their conventional counterparts. Organic agriculture also creates less soil and water pollutionand lower greenhouse gas emissions. And it's more energy-efficient because it doesn't rely on syntheticfertilizers or pesticides.
Organic agriculture is also associated with greater biodiversity of plants，animals，insects andmicroorganisms as well as genetic diversity. Biodiversity increases the services that nature provides andimproves the ability of farming systems to adapt to changing conditions.
Despite lower yields，organic agriculture is more profitable for farmers because consumers are willingto pay more.Higher prices，called price premiums，can be justified as a way to compensate farmers forproviding ecosystem services and avoiding environmental damage or external costs.
51. What do we learn from the conclusion of the author's review study？
A)More resources should be tapped for feeding the world's population.
B)Organic farming may be exploited to solve the global food problem.
C)The long-term prospects of organic farming are yet to be explored.
D) Organic farming is at least as promising as conventional farming.
52. What is the critics' argument against organic farming？
A)It cannot meet the need for food.
B) It cannot increase farm yields.
C )It is not really practical.
D) It is not that productive.
53. What does the author think should be taken into account in arguing about organic farming？
A)Growth in world population.
B)Deterioration in soil fertility.
C) Inequality in food distribution.
D)Advance in farming technology.
54. What does science tell us about conventional farming？
A) It will not be able to meet global food demand.
B)It is not conducive to sustainable development.
C) It will eventually give way to organic farming.
D) It is going mainstream throughout the world.
55. Why does the author think higher prices of organic farm produce are justifiable？
A)They give farmers going organic a big competitive edge.
B)They motivate farmers to upgrade farming technology.
C) Organic farming costs more than conventional farming.
D)Organic farming does long-term good to the ecosystem.
Once these abilities and practices evolved, they probably became driving forces in the further evolution of man.Those members of the species who become most proficient(精通的) in the fabrication of tools and in the command of language and thought would tend to survive and maintain their kind for good, at the expense of those of lesser ability.
11.Which of the following statements best expresses the main idea of the passage？()
A.Tools and language are either the effects or the causes of human evolution.
B.No other animals have achieved human abilities.
C.Among the animals, only man is able to use tools and language.
D.Man owns his capacity to making use of tools and language.
12.“Animal kingdom” in the passage refers to ().
A.the place where all animals live
B.the animal society
C.all kinds of animals, including man
D.the forest with animals
13.One important condition for man’s evolution is() .
A.the animal kingdom
B.a supreme position
C.the myriad kinds
D.his natural capacity
14.The phrase “come about” in the passage is likely to mean ________.
A.happened
B.appeared
C.arrived
D.succeeded
15.The last sentence suggests that() .
A.those of lesser ability would be very expensive
B.in order to survive, man has to sacrifice some other animals
C.those who become proficient in making tools can speak well
D.language and thought could be acquired by man
With the large number of dogs roaring through our communities， people need to know the facts about
rabies (狂犬病)， a fatal disease caused by animal bites. Despite vaccination (接種疫苗) programs， rabies is still very prevalent， and will continue to be a serious public health problem for
many years to come.
Rabies strikes the central nervous system and brings on choking， convulsions (抽搐) and inability to swallow liquids. It can even cause death. If you or anyone in your family is bitten
by dog， cat or other animal， you should not panic， but thoroughly wash the wound with plenty of
soap and water and rush to nearby hospital for immediate treatment. If you own the animal which did the
biting， you should immediately call a veterinarian for advice and make sure the public health
authorities know when and where the biting took place and who was bitten.
Rabies is a kind of disease which ________.
A. causes heart attack
B. hurt one‘s legs
C. causes nerve-centre problem and breathing problem
D. strikes one‘s brain
"A rolling stone gathers no moss (苔藓) ," but there is one living animal that does gather moss, the three-toed sloth (树獭) of South America. This slowest-moving member of the animal kingdom is so inactive that moss actually gathers on its body and turns it green strange as it seems!
Most of the sloth's life is spent motionless, hanging upside down from a limb. And that is the way its hair grows. Long and coarse, the strands (串) from receptacles (花托) for the damp jungle algae (水藻) that turn the brown fur a mossy green. Actually this moss helps the animal survive because it serves as a per- fect camouflage against the leaf trees and hides the sloth from the jungle's swift-moving hunters. The sloth would have little chance of survival on the ground. With long, curved claws hooked over the limb of a leafy tree, it spends the long hot hours during the day drowsing and eating. Inch by inch, it strips the leafy limbs bare and crawls Slowly down the trunk to find a new dining spot, but only at night.
In addition to looking rather like a vegetable, the sloth is a strict vegetarian. Running out of its favorite leaf is about the only thing that will make a sloth move. Then its appetite may even force the animal into swimming a stream to reach a juicy succulent(多汁的值物). It will also force it into fighting to keep the tree all to itself. The sloth is lazy and prefers to be alone, but it will tolerate its own relatives!
A suitable title for this passage might be ______. ()
A．Wild Animals
B．Animal Kingdom
C．Moss Growth
D．The Lazy Animal
The poorer countries are often referred to as the Third World. They have special problems. Often their land is too poor to grow anything on. The land can be improved. But a lot of things have to be done first new farming methods have to be introduced, people have to be educated, and reliable sources of water and energy have to be found.
Many of these, problems are too complex for one country to solve alone. Outside help is needed, but is has to be the right kind of help. Money is not enough. Newly developed countries need to be helped to be able to help themselves.
According to the article, what is the tragedy？
A．There are more wealthy countries in the world
B．There are more poor countries in the world
C．There are more wealthy people in the wealthy countries
D．There are more poor people in the poor countries
But some families do not want a house dog or a house cat.They want an outside dog or cat.So the animal stays outsides the house most of the time.Special dog houses are made for such dogs to use, especially at night in the colder parts of North America.
1.Why do Western people love their pets so much？ ()
A.Because their children don't have many friends.
B.Because they have leisure time and enough money.
C.Because they are influenced by animal stories.
D.Because they regard pets as their children.
2.Since they have heard a lot of animal stories, American children tend to () .
A.love animals when they grow up
B.treat animals rudely
C.live with animals
D.dislike animals
3.A purebred dog refers to a dog()
A.which is brought up by one family
B.whose parents come from the same area
C.whose parents belong to the single kind of dog
D.which is bred in a pure house
4.How do most Americans get their first pet？ ()
A.They buy it from a pet shop
B.They pick up one from the street
C.They always get one from the animal shelter
D.They get it from their friends
5.Not all pets stay with their masters in the house all the time for().
A.it's good for them to stay outside
B.people think they are dirty
C.Some people don't want a house dog or a house cat
D.they don't like to stay in their masters' house
In 1934 the scientist William Beebe dived 3 , 000 feet below the surface in a hollow steel ball. In 1935 Auguste Piccard dived 10, 330 feet. In 1960 his son Jean dived to a【35】of 35, 800 feet.
All these early dives were deep. But the divers could not stay down for very long. They had to【36】the surface after a few seconds. Scientists needed to stay down longer to study life below the surface.【37】, they succeeded. Cousteau, a Frenchman, was able to【38】down to a depth of【36】feet for one month and to a depth of 90 feet for a week.
Now scientists are developing even【39】equipment. With this new equipment, men can stay【40】the surface for days or【41】weeks. In 1962 Consteau【42】a research station 35 feet below the surface. Then in 1964 he set up another station on the ocean floor of the Red Sea. This was the first undersea station to operate【43】help from the surface.
Many countries are now studying undersea【44】. The Soviet Union has an undersea laboratory in the Crimean Sea. The United States has a laboratory 50 feet【45】on the ocean floor【46】the Virgin Islands. In 1970 five men lived there for two weeks. Then a【47】of five women scientists stayed in the laboratory.【48】came other teams of men. All were there to explore the ocean depths and【49】plans for the use of its resources. Scientists hope to find enough【50】, vegetable, and animal wealth there to provide food for the whole world.
(31)
A．in
B．to
C．on
D．under
To be sure, vegetarianism dates back to Plato and Plutarch. And in America, the first cruelty busts happened in the late 19th century in New York. But society viewed animals largely as properties, until Regan and a handful of other philosophers pushed animal-rights issues into the academic mainstream. Indeed, this academic focus has dramatically altered how Americans approach the ethics of husbandry, some observers say. Once-radical ideas have been firmly woven into society.
Regan envisions a type of "bill of rights" for animals, including the abandonment of pet ownership, elimination of a meat-based diet, and new standards for biomedical research on animals. Essentially, he wants to establish a new kind of solidarity with animals, and stop animal husbandry altogether. "In addition to the visible achievements and changes, there's been what I might call an invisible revolution taking place, and that revolution is the seriousness with which the issue of animal rights is taken in the academy and in higher education," Regan says.
But with Regan planning to retire in December, a growing number of farmers, doctors, and others are questioning the sustainability of his ideas. Increasingly, Americans who feel their rights have become secondary to animals' rights are speaking out against a wave of arson attacks on farmers and pies thrown in the faces of researchers. Radical groups, with sometimes-violent tactics, have been accused of scaring farmers away from speaking up for traditional agrarian values. Indeed, tensions are only rising between animal-rights activists and groups that have traditionally used the land with an eye toward animals' overall welfare, not their "right" to be happy or to live long lives.
The controversy around Regan is heightened by the fact that he's no pacifist. He says he believes it's OK to break the law for a greater purpose. He calls it the "greater-evil doctrine", the idea that there's moral hierarchy to crime. "I think that you can win in court, and that's what I tell people," Regan says. "I don't believe that you should run and hide." The shift in the level of respect has been "seismic", he says. "Contrary to what a lot of people think, there really has been a recognition that there are some things that human beings should not be permitted to do to animals. Where the human heart has grown is in the recognition of what is to be prohibited."
Regan is called the intellectual leader of the animal-rights movement because
A．he is a philosopher in the field of animal-rights protection.
B．he helps to make animal-rights movement an academic subject.
C．he has written many books on how to protect animal rights.
D．he proves that animal societies have their moral standards as human societies do.
