2. 职称英语
  3. Lifespan About a century ago, the average li

Lifespan About a century ago, the average li

游客2023-10-21  47
问题                                 Lifespan
    About a century ago, the average lifespan of Americans was about 50 years.
Lifespan
    About a century ago, the average lifespan of Americans was about 50 years. Today, the typical American lives for around 78 years. / What accounts for such increased longevity? / Between 1900 and 1950, inventions such as refrigeration and sewage treatment / meant that young people were able to survive longer. / Moreover, medical breakthroughs helped contain diseases that killed many children. / This means that future medical breakthroughs will result in even longer average lifespan.
选项
答案                                 Lifespan
    About a century ago, the average lifespan of Americans was about 50 years. Today, the typical American lives for around 78 years. / What accounts for such increased longevity? / Between 1900 and 1950, inventions such as refrigeration and sewage treatment / meant that young people were able to survive longer. / Moreover, medical breakthroughs helped contain diseases that killed many children. / This means that future medical breakthroughs will result in even longer average lifespan.
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3118460.html
相关试题推荐
随机试题
最新回复(0)