雅思作文话题针对动物今天是次分享，关于动物有很多说不完的话，比如：对动物的喜爱，动物的种类，动物的特征，动物和人类的关系，等等等等，但是今天分享的雅思作文话题是动物实验的好处和坏处。
@动物实验的坏处
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.
@动物实验的好处
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, undeniably, far more effective than experimentation on bacteria or on other lower species in determining drug safety. Medical history informs us that drugs that can potentially exert grave side effects on Homo sapiens should be tested by pharmaceutical companies on live mammals first to ascertain their toxicity. In the second place, in the arena 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 that human lives should be put at risk when the objective of a space mission is merely to identify living creatures’ reaction to outer space experience. Lastly, lab research about the behavioural tendencies of chimpanzees, gorillas or other members of the primate group is also a worthy endeavour, in light of the fact that it generates outcomes advancing anthropological and genetic sciences.
