!!求一本书,能找到双手奉上所有分数以示感谢,说道做到!!

来源:百度知道 编辑:UC知道 时间:2024/05/12 01:46:07
书名:
404 essential tests for ielts
免费的就好,没有格式要求,麻烦大家帮忙了!
额。。。不小心勾了匿名,我有2000分,不骗人!

谢谢二楼,不过我要的是整本书,哎~~

MEI

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