Every year, millions of animals undergo painful suffering or death as a result of scientific research into the effects of drugs, food additives, cosmetics and other chemical products. While most people think animal testing is necessary, others are upset by what they see as needless suffering. This essay looks at some of the positive and negative aspects of animal testing.
Many medical treatments and procedures have been developed from experiments on animals. Since animals share many features with humans, scientists use animals to test the safety and effectiveness of newly developed drugs before pilot testing on small groups of patients. Medical teams practice new operating techniques such as transplants on animals. Without animal testing, many procedures or new drugs would be extremely unsafe.
However, many people are concerned that animals are suffering unnecessarily and cruelly. They do not believe that every new drug needs to be tested on animals, especially with the huge database of knowledge and modern computer models. They also are worried that many animal tests are ineffective, pointing out that any drugs have had to be withdrawn from the market despite extensive testing. They particularly feel that animal testing should not be used for non-essential products such as cosmetics, shampoos, soaps, and cleaning products. Furthermore, some campaigners would like to see certain tests replaced and more humane methods used.
We need to make sure that the millions of animals who are used for testing new products are treated with the minimum of suffering. Although some animal testing may be unavoidable at present, treating our fellow creatures as mercifully as possible will demonstrate our humanity.
时间或地点名词后一定要用where, when来引导定语从句吗
使用关系副词的三点注意
关系词代词和关系副词的意义与用法
一道非常容易出错的定语从句考题
英语原因状语从句的用法及有关说明
as, which 非限定性定语从句
做定语从句试题的基本方法
英语方式状语从句的用法及有关说明
谈谈英语状语从句的省略问题
修饰the way的定语从句
whose引导定语从句可以指物吗
英语结果状语从句的用法及有关说明
英语语法详解:原因状语从句(四大点)
though/although习惯上不与but连用吗
谈谈since从句的翻译问题
先行词和关系词二合一
能用what引导定语从句吗
It’s time后接定语从句的几点用法说明
关系代词引导的定语从句
英语语法详解:结果状语从句(五个方面)
most of them还是most of which
英语八类状语从句的用法归纳
英语语法详解:让步状语从句(三大方面)
考查above which的一道高考题
如何快速区别非限制性定语从句与并列句
英语目的状语从句的用法及有关说明
although 与 though的用法区别
关系副词引导的定语从句
英语语法详解:时间状语从句(两大条)
定语从句还是强调句
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