The twentieth century saw great change. In your opinion, what is one change that should be remembered about the twentieth century? Use specific reasons and details to explain your choice.
There have been many changes ,both technological and cultural, in the twentieth century. I believe that one stands out above the rest :advances in medical science. The changes in medical science go together with the changes in technological and cultural areas. One can move ahead only with the help of the others. We can see the results of medical advances in three areas: development of vaccines and antibiotics, expanded access to health care , and improved surgical techniques.
在二十世纪，无论是技术上还是文化上都发生了很多变化。我相信有一个是最突出的：医学的进步。医学的变化与科技文化领域的变化是同步的。一个人只有在别人的帮助下才能前进。我们可以看到医学进步在三个方面的成果：疫苗和抗生素的发展，医疗保健的普及，以及外科技术的改进。
When medical researchers learned how to prevent disease and stop it from spreading, the quality of life for many people around the world improved. Today smallpox is a forgotten disease and vaccinations are no longer required. Polio is under control and the vaccine is widely available . The development of penicillin has helped many people recover from serious illness.
当医学研究人员学会如何预防疾病和阻止疾病传播时，全世界许多人的生活质量都得到了改善。今天天花已经被遗忘，不再需要接种疫苗。脊髓灰质炎已得到控制，疫苗也已广泛提供。青霉素的发展已经帮助许多人从重病中恢复过来了。
Although health care is not universal even in developed countries, it is much better than it used to be. Local clinics, visiting nurses and specially hospitals have all improved the health care for our communities.
虽然即使在发达国家，医疗保健也不普及，但它比以前好多了。当地诊所、探访护士和特别医院都改善了我们社区的医疗保健。
If you should be unfortunate and require surgery : you are still lucky to have the surgery today rather than even ten years ago. Now with microscopic and laser surgery, operations are more efficient. You spend less time in the hospital and you recover faster.
如果你不幸需要手术：你今天还是幸运的，而不是十年前。现在有了显微手术和激光手术，手术效率更高了。你在医院里呆的时间越少，恢复得越快。
I can't think of any other change that has affected the lives of so many people. Our health is important to all of us. We all are thankful for advances in the area of medical science.
我想不出还有什么改变会影响这么多人的生活。我们的健康对我们大家都很重要。我们都感谢医学领域的进步