animals were friends or foes of humanity at different times of the human history. in modern times, experiments upon animals have long been a breeding ground for spirited debate. some animal activists argue that we should ban animal experiments altogether because subjecting animals to experimentation is unjustifiable on moral grounds. yet some other people contend that the advancement of science necessitates animal testing. personally, i believe both their views have merit and demerit.

granted, empirical evidence suggests that many animal experiments are performed callously without any heed to the discomfort or pain that laboratory mammals endure. first and foremost, improper confinement of test animals such as locking them up in cramped cages or poor veterinary is inhumane .it can gravely disrupt natural biological functions of the test animal. further, the effects of vaccination and vivisection conducted on live rodents, primates and other lab mammals can be gruesome and chilling. they may, in some cases, even constitute sheer torture of live animals.

however, from a more pragmatic perspective, evidence is mounting that animal experimentation is still largely a necessary evil and there is no practical alternative for it at this point. in the first place, it is manifest that drug experimentation on live mammals is far more effectual than experimentation on bacteria or on other lower species in testing drug safety. drugs that have severe potential side effects on homo sapiens must be tested by pharmaceutical companies on live mammals first to ascertain their toxicity. in the second place, in space research, live animals are still the only viable alternative to humans in testing living creature reaction to outer-space experience on a flight not considered to be sufficiently safe for human astronauts. lastly, lab research about the behavioral tendencies of chimpanzees, gorillas, orangutans and other members of the primate group is also necessary. it produces valuable outcomes consistently advancing anthropological and genetic studies.

to conclude, i concede that experiments upon animals may induce suffering to the test animals. however, i am convinced that there are no feasible alternatives to this methodology at the current stage of scientific development. on balance , i think that we should allow animals testing to be continued but at the same time use techniques such as analgesic, anesthetic and tranquilizing drugs to minimize the pain inflicted upon the test animal and augment the general welfare of these animals.

雅思2024作文篇2

with the development of cities, more and more new buildings are appearing in the city. some people claim that the government should ensure all the new buildings should be built in traditional styles. for me, i do not agree with this suggestion.

undoubtedly, the old buildings can reflect our traditional culture and should be protected and built. they are the houses where the ancient people lived. by appreciating these old buildings, we can have a better understanding of our ancient culture and history.

however, i do not agree that all the new buildings should be built in traditional styles. first of all, a city’s culture identity consists of the past culture and the modern culture. while past culture can be represented by the traditional buildings, modern culture should be reflected by modern buildings. if all the new buildings are built in traditional styles, the modern culture may be lost in the city. secondly, the style of the new building should be decided by a lot of factors such as location, function, and so on. for instance, it is impossible for us to build a modern shopping mall into traditional style, because there are a lot of famous brands inside. thirdly, modern buildings can accommodate more people than traditional buildings, which can meet the increasing population.

therefore, i agree that we should build some old buildings, but we should not build all the buildings into traditional styles. we should consider a lot of aspects before we make the final decision.

雅思2024作文篇3

air transport is commonly used to move fruits and vegetables to places where those farm products can’t grow or are out of season. the benefits of such business are obvious, but air transport also creates a number of problems.

transport of fruits and vegetables by air enables consumers to enjoy a wider variety of fresh and in-season farm products from all over the world. not only is air transport good for consumers, it is also a blessing for farmers because the market is no longer restricted by regions. as a result, air transport increases the sale volume by selling more products in more places.

moreover, air transport of food has now become a major resource of incomes for air companies. in the past, air companies’ business mainly came from serving passengers. however, facing an increasingly tough market, air companies need to expand their share of market to serve a wider range of customers in order to stay in the game and make a profit. with a booming economy and more money to spend, people create a great potential for food transport business and good margin for air companies.

in spite of such benefits, air transport is not free of problems. one major issue is high cost. air transport is probably the most expensive way of transport. higher costs entail high prices, which in turn deprive people with less money the opportunities to enjoy such privileges. so air transported food is now for the rich, a fact that is unfair for poor people.

in addition, it is not the best option to solve problems by transporting food from outside for places where certain kinds of fruits does not grow. the most optimal way, it seems to me, is that we should change the environment required by such plants using scientific and biological methods such as creating suitable soil and temperature. such solutions will be proven to be ultimately cost-effective and fundamental.

more importantly, research indicates that air transport pollutes the environment. for example, britain transports half its food by air. however one kilo new zealand fruit emits five kilo warm house gas on its way to destination. therefore, some environmental groups and books advocate people to distinguish local fruit and air-transported fruit in an effort to cut the pollution from food consumption.

in conclusion, air transport has many benefits for consumers and farmers, but it also has problems such as high cost and pollution. more effective and environmental friendly solution should be found to address such problems.

雅思2024作文篇4

in the last century, the level of human science and technology soared, and the quality of life became higher and higher, and the world was silent in the joy of rapid development. it is not until this century that the incessant scourge of human development is a wake-up call, and the word "environmental protection" is being more and more specific...

the lessons of history are painful, and he deeply affects every one of us, such as sars in 2003, the snow in 2008, the earthquake... both give us the lesson of blood and tell us the importance of environmental protection. of course, the nightmare is not over, and this year the swine flu epidemic is raging around the world, and the catastrophe seems to be getting closer. the arctic ice sheet is still melting, the hole in the ozone layer is growing... scientists have calculated that the pacific island of tuvalu is about to disappear in 50 years. if humanity does not pay attention to the earth, the big cities in the east of our country will bee "the venice of the east", and the only people who will greet us will perish.

so what is green? some say it is the responsibility of the state, others say it is a national problem. this is true, but is there no personal problem? i said -- yes!

earth to serve each and every one of us, every one of us on the earth are all have a responsibility, too much if we owe human nature, and don't want to return, the domineering creditor will no one earth, all living creatures on the earth will suffer.

so, whether it's you i should have done that he "environmental protection", "environmental protection" is not difficult, as long as can do everything for the sake of the earth to protect the resources around, always about the earth in mind.

as middle school students, we should start from the school of "environmental protection", don't open my tired when the sun is shining lamp, don't let the tap water to pour into the sewer, don't let the junk've picked home! on the other hand, we have to urge parents and families to drive less, ride bikes and exercise more and be "green" volunteers.

the country has the duty to do, the people have the problem of this treatment, the individual has no duty to do, we ask ourselves: do you do the green? have you put "green" in your mind?

雅思2024作文篇5

update required to play the media you will need to either your browser to a recent version or your .

topic 34 increasing attention to traditional culture.

the last decade witnessed an intriguing phenomenon that people are paying more and more attention to traditional chinese culture. bookshelves are packed with books interpreting ancient chinese wisdom, depicting its brilliant history and fascinating historic figures. it is the same with tv programs. what s more, suggestions that chinese classics be made a pulsory course have been made.

three factors may account for people s up-surging interest. to begin with, tremendous curiosity is aroused by those pending history mysteries of hundreds or even thousands of years.

furthermore, people e to the realization that ancient chinese culture serves as a gold mine from which inexhaustible lessons can be learned and put into today s practice. last but not least, despite the global dominance of western culture, our ethnic cultural pride has significantly increased.

in my opinion, without any doubt, it is of positive significance that we pay more attention to our traditional culture. not only can we derive pleasure from solving the mysteries in history, but we can learn a great deal from our ancestors wisdom.

雅思2024作文篇6

wild animals have no place in the 21st century. some people think that preventing these wild animals from dying out is a waste of resource. to what extent do you agree or disagree with this opinion.

biological diversity has never been so threatened as it is today as a result of the process of human civilization. the various forms of pressure created by human activity have destroyed natural balance, led to the deterioration of natural habitats, genetic erosion and the rarity, even disappearance, of a number of plant and animal species.

as the pace of civilization accelerates, more people, taking more space, needing to use more natural resources, engaging in ever-growing consumption, impose severe deterioration on the habitat of animals. an increasing number of people come to realize that the disappearance of animals will result in serious threat to the equilibrium of ecosystem. simply put, the extinction of hawks, a rat-eating bird seen in many regions, will result in the rapid propagation of rats. and rats, further, will destroy the prairies and threaten the other animals like gazelles, zebras and others, who live on grass and green lands. the coexistence of animals and human beings creates perfect harmony and brings about the vividness to our planet.

it is hard to imagine what our world would be like without animals. sociologists also point out that the disappearance of animals can cause social and economic problems. animal trade, as a supporting sector to the world economy, was very active before. however, the situation is beyond control since animal trade is very profitable and alluring. many species cannot escape the adversity of being killed.

certainly, our diet cannot be without meat. there are living stocks, which can provide us with sufficient and nutritious produce. therefore, we need not to resort to wild animals, especially the endangered ones. to protect animals is to protect our living environment. every individual should join efforts to keep the diversity of animals.

雅思2024作文篇7

science promote the development of society

if you ask me who promoted the development of society, the politicians or the scientists, i will tell you directly, scientists is the one who promote the social progress.

as we all know, in 18th century, with the invention of the steam engine, people gradually use steam as power, led to the first industrial revolution, and after that the human beings entered the era of steam, meanwhile the human society entered the stage of capitalism. then when the human beings came into the 19th century, the electricity was used as the power, there

happened the second industrial revolution, the era of electrical was born, the human society has entered into the advanced stage of capitalism. with development of informationtechnique, now the internet is a key part of our life, human has entered the information age.

from the history we can see that each time the progress of human society, the driving force is the development of science,society development is inseparable from the science, therefore, scientists is the impetus for social development, they give more influence on the world.

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雅思2024作文7篇