動物的英語作文3篇
在日復一日的學習、工作或生活中，大家都有寫作文的經歷，對作文很是熟悉吧，根據寫作命題的.特點，作文可以分為命題作文和非命題作文。為了讓您在寫作文時更加簡單方便，下面是小編整理的動物的英語作文3篇，希望對大家有所幫助。
動物的英語作文 篇1
Animals were friends or foes of humanity at different stages of the human history. In modern times, experiments upon animals have been a breeding ground for spirited debate. Some animal rights activists argue that we should ban animal experiments altogether because subjecting animals to experimentation is unwarranted on moral grounds, whereas some other people contend that the advancement of science necessitates animal testing. Personally, I am in favor of the latter view.
Granted, mounting empirical evidence suggests that many animal experiments are performed callously without any heed to the discomfort or pain that laboratory mammals endure. For one thing, improper confinement of test animals such as locking them up in cramped cages is inhumane; and this, in turn, can severely disrupt natural biological functions of the test animal. For another, the effects of vaccination or vivisection conducted on live mammals can be chilling. In extreme cases, they constitute sheer torture of animals.
Nevertheless, from a more pragmatic standpoint, evidence abounds that animal subjects are still an indispensable part of scientific research at this phase of human development. In the first place, drug experimentation on live mammals is, indisputably, far more effectual than experimentation on bacteria or on other lower species in determining drug safety. Medical history informs that drugs that can potentially exert grave side effects on homo sapiens must be tested by pharmaceutical companies on live mammals first to ascertain their toxicity. In the second place, in the realm of space research, live animals are still practical alternatives on a flight not considered to be sufficiently safe for human astronauts. And I would be hard-pressed to imagine the scenario that human lives should be put at stake when the objective of a space mission is merely to identify living creatures reaction to outer space experience. Lastly, lab research about the behavioral tendencies of chimpanzees, gorillas or other members of the primate group is also a worthy endeavor, in light of the fact that it generates outcomes consistently advancing anthropological and genetic sciences.
動物的英語作文 篇2
A snake is a long and thin animal that lives in grass or other dark places. It has no legs or feet, but can move very fast on its stomach. Snakes usually have green,yellow or black skins, which make it difficult for their enemies to find them.Some kinds of snakes live in water. They can swim as freely as fish.
動物的英語作文 篇3
Many wild animals are facing the danger of extinction，because the environment that they are living in has changed greatly。For example，with the developmet of cities，the using of insecticide and serious pollution，their living areas have bee narrowcr and narrower。Many of the wild animals，now are confronted with food crisis。At the same time，man is killing off species just for getting their fur，skin，horns，teeth and meat.In order to protect our resources of ecology，people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty。There fore，measures of the following should be taken:pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life，reserves.Only if we human beings take some drastic measures can wild animals be preserved。