例题：Nowadays animal experiments are widely used to develop new medicines and
to test the safety of other products. Some people argue that these experiments should be banned because it is morally wrong to cause animals to suffer, while others are in favour of them because of their benefits to humanity. Discuss both views and give your own opinion.现在动物实验被广泛用于开发新药和测试其他产品的安全性。一些人认为这些实验应该被禁止，因为让动物受苦在道德上是错误的，而其他人赞成它们，因为它们对人类有益。讨论两种观点并给出你自己的观点。
例文：
It is true that medicines and other products are routinely tested on animals before they are cleared for human use. While I tend towards the viewpoint that animal testing is morally wrong, I would have to support a limited amount of animal experimentation for the development of medicines.
解析：本段为引入段，题目背景阐述，重述题目观点，并表达自己的观点。
be routinely tested常规地，惯常地clear在这里是熟词偏义 “批准，许可” 的意思On the one hand, there are clear ethical arguments against animal experimentation. To use a common example of this practice, laboratory mice may be given an illness so that the effectiveness of a new drug can be measured. Opponents of such research argue that humans have no right to subject animals to this kind of trauma, and that the lives of all creatures should be respected. They believe that the benefits to humans do not justify the suffering caused, and that scientists should use alternative methods of research.
一方面，动物实验是存在明显的道德争议。举一个常见的例子，给实验室的老鼠一种疾病，这样就可以测量一种新药的有效性。反对这类研究的人认为，人类没有权利让动物遭受这种创伤，所有生物的生命都应该受到尊重。他们认为，对人类的好处并不能证明造成的痛苦是正当的，科学家应该使用替代的研究方法。
解析：本段论述动物实验是存在明显的道德争议，主要采取举例的方法来展开。
subject sb/sth to sth动词搭配，使经受，使遭受，再例：Innocent civilians are being arrested and subjected to inhumane treatment.无辜的平民正被逮捕并遭受非人的虐待。trauma 精神创伤，极其痛苦的经历justify使…合法，合理，公正化On the other hand, reliable alternatives to animal experimentation may not always be available. Supporters of the use of animals in medical research believe that a certain amount of suffering on the part of mice or rats can be justified if human lives are saved. They argue that opponents of such research might feel differently if a member of their own families needed a medical treatment that had been developed through the use of animal experimentation. Personally, I agree with the banning of animal testing for non-medical products, but I feel that it may be a necessary evil where new drugs and
medical procedures are concerned.
另一方面，动物实验的可靠替代方法并不总是可行的。在医学研究中使用动物的支持者认为，如果能拯救人类的生命，让老鼠遭受一定程度的痛苦是合理的。他们认为，如果他们自己的家庭成员需要一种通过动物实验开发出来的治疗方法，那么反对此类研究的人可能会有不同的感受。就我个人而言，我同意禁止对非医疗产品进行动物试验，但我认为，在涉及到新药和医疗程序时，这可能是一种必要的邪恶。
解析：本段论述动物实验的可靠替代方法并不总是可行的。本段主要采取假设的论证方法来展开，假设反对动物试验的人的亲人或朋友得病了，需要做药物试验才能发明治病的药物，那么反对者可能就会想法有所改变feel differently，这种论证方法很好，如果考生在考场上想不到实例的话，那么可以假设一个例子来论证自己的观点。
In conclusion, it seems to me that it would be wrong to ban testing on animals for vital medical research until equally effective alternatives have been developed.
解析：本段为总结段，注意不需要给出新观点，总结出呼应全文的核心观点即可。
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