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在第三段中作者讨论了另外一种观点，即应该支持动物试验。理由也有两条：理由一： safer and better lifestyle 动物试验可以帮助人类测试药物、化妆品等（test drugs, cosmetics）给人类带来更安全和舒适的生活（safer and better lifestyle）。理由二： better than testing on human 有些人觉得既然一定要用活体试验，那么用猴子做试验总要比用人试验要好（it is better to test the drugs on a monkey rather than on a person.）。第四段总结，并给出作者观点最后一段作者提出了自己的观点，认为如果是为了残忍而残忍而且没有任何效果，则绝对是超出了可接受行为的范围（stepping over a boundary of acceptable behavior）。但如果研究所带来的利益是明显、实际并且有价值的（explicit, tangible and valuable），则这些试验是合理的（the research is justified.）。重点词汇 subject … to… 使……屈从于……；使……遭受…… The inquiry found that the court had subjected them to unfair treatment. inhumane adj．残忍的；不人道的 Conditions for prisoners were described as inhumane. survival of the fittest 适者生存 “Survival of the fittest” is the result of natural selection. in favour of 支持；赞成 He voted in favour of the bill because he wants to please the law makers. torture n．折磨；痛苦 Half of the prisoners died after torture and starvation. barbaric adj．野蛮的；粗野的 She found the idea of killing animals for pleasure barbaric. species n．物种；种类 Over a hundred species of insect are found in this area. explicit adj．外在的；清楚的 She was very explicit about what she thought was wrong with the plans. boundary n．边界；分界线 The Ural mountains mark the boundary between Europe and Asia. tangible adj．切实的；实际的 Other tangible benefits include an increase in salary and shorter working hours. justified adj．有道理的；合理的 I accept that the criticism is completely justified. inherently adv．天性地；固有地 There's nothing inherently wrong with his ideas. 实用句型以……为目的 for the sake of … 在表达“为了……（目的）而做……”这种概念时，可以用“for the sake of”来表达，相当于“because of...” 或“for the purpose of...”例如： Let's not disagree for the sake of （= because of）a few pounds. Let's say, just for the sake of argument/for argument's sake （= for the purpose of this discussion), that prices rise by 3 per cent this year. You're only arguing for the sake of arguing （= because you like arguing）. 此外，我们还可以用“for its own sake”用来表达类似的概念，例如： I study for its own sake. Don't use technology for its own sake. Use it when it's the best or the only way to provide information. ---------------------------- 范文：私家车的利与弊 Advantages and disadvantages of private cars. With the fantastic spur both in industry and in economy in China, the number of people who own private cars is on the rise. Some people have bought cars of their own, and others are planning to buy cars. But there have been two quite different views on this phenomenon. Some claim that there are many advantages brought about by cars. First, the automobile industry provides jobs for countless workers and strong support for other industries. Second, if conditions permit, owning a car can make us work more efficiently. Finally, life will become more convenient. A car allows one to move freely and with a car there is no need to wait for the bus in the cold or under the burning sun. However, others strongly object to the increase in developing private cars. They hold that automobiles will give rise to a series of problems. In the first place, as more and more cars are produced and run in the street, a large volume of poisonous gas will be given off, polluting the atmosphere and causing actual harm to the health of people. Next, private cars contribute to traffic con