How long can human beings live? Most scientists who study old age think that the human body is ______ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live —— if he or she is ______ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ______. They wear out, and as a result, we get old and ______ die.Even though we can’t live forever, we are living a ______ life than ever before. In 1900, the average American life span (寿命) was only 47 years, but today it is 75 years!When does old age begin then? Sixty-five may be out-of-date as the ______ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ______ until after age 75.People are living longer because more people ______ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ______. Now that the chances of dying ______ are much lower, the chances of living long are much higher due to better diets and health care.On the whole, our population is getting older. The ______ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ______, not disaster, many men and women in their “golden years” are healthy, still active, and young in ______ if not in age.As the society grows old, we need the ______ of our older citizens. With long lives ahead of them, they need to ______ active and devoted.【1】A. designed B. selected C. improved D. discovered【2】A. completely B. generally C. apparently D. extremely【3】A. rapidly B. harmlessly C. endlessly D. separately【4】A. eventually B. hopelessly C. automatically D. desperately【5】A. busier B. longer C. richer D. happier【6】A. finishing B. guiding C. waiting D. dividing【7】A. stress B. damage C. decline D. failure【8】A. survive B. enjoy C. remember D. value【9】A. problems B. fears C. worries D. diseases【10】A. poor B. young C. sick D. quiet【11】A. changes B. recovery C. safety D. increases【12】A. dreams B. chances C. strengths D. choices【13】A. mind B. appearance C. voice D. movement【14】A. protection B. suggestions C. contributions D. permission【15】A. sound B. appear C. turn D. stay
How long can human beings live? Most scientists who study old age think that the human body is ______ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live —— if he or she is ______ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ______. They wear out, and as a result, we get old and ______ die.Even though we can’t live forever, we are living a ______ life than ever before. In 1900, the average American life span (寿命) was only 47 years, but today it is 75 years!When does old age begin then? Sixty-five may be out-of-date as the ______ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ______ until after age 75.People are living longer because more people ______ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ______. Now that the chances of dying ______ are much lower, the chances of living long are much higher due to better diets and health care.On the whole, our population is getting older. The ______ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ______, not disaster, many men and women in their “golden years” are healthy, still active, and young in ______ if not in age.As the society grows old, we need the ______ of our older citizens. With long lives ahead of them, they need to ______ active and devoted.【1】A. designed B. selected C. improved D. discovered【2】A. completely B. generally C. apparently D. extremely【3】A. rapidly B. harmlessly C. endlessly D. separately【4】A. eventually B. hopelessly C. automatically D. desperately【5】A. busier B. longer C. richer D. happier【6】A. finishing B. guiding C. waiting D. dividing【7】A. stress B. damage C. decline D. failure【8】A. survive B. enjoy C. remember D. value【9】A. problems B. fears C. worries D. diseases【10】A. poor B. young C. sick D. quiet【11】A. changes B. recovery C. safety D. increases【12】A. dreams B. chances C. strengths D. choices【13】A. mind B. appearance C. voice D. movement【14】A. protection B. suggestions C. contributions D. permission【15】A. sound B. appear C. turn D. stay
题目解答
答案
【1】A
【2】D
【3】C
【4】A
【5】B
【6】D
【7】C
【8】A
【9】D
【10】B
【11】A
【12】B
【13】A
【14】C
【15】D
解析
文章主要讨论了人类寿命的极限、影响寿命的因素以及人口老龄化对社会的影响。文章中提到，科学家认为人类的寿命极限是120年，但大多数人可能只能活到110岁。随着现代医学的发展，人们的寿命在延长，人口老龄化对社会产生了深远的影响。
步骤 2：分析每个空格的语境
1. 人类身体被设计（designed）为不能活超过120年。
2. 如果一个人非常（extremely）健康和幸运，他或她可能活到110岁。
3. 细胞不能无休止（endlessly）地繁殖。
4. 细胞磨损，最终（eventually）导致我们变老并死亡。
5. 尽管我们不能永生，但我们比以往任何时候都活得更长（longer）。
6. 65岁可能不再是中年和老年的分界线（dividing）。
7. 许多老年人直到75岁才开始经历身体和精神的衰退（decline）。
8. 人们活得更长是因为更多的人在童年时期幸存（survive）下来。
9. 在现代医学改变自然法则之前，许多儿童死于常见的儿童疾病（diseases）。
10. 由于更好的饮食和医疗保健，年轻人（young）的死亡率降低，长寿的机会增加。
11. 人口的变化（changes）将对社会发展和生活方式产生持久影响。
12. 一些人看到机会（chances），而不是灾难。
13. 许多人在他们的“黄金岁月”里，身体和精神仍然健康，仍然活跃，即使在年龄上，他们的思想（mind）仍然年轻。
14. 随着社会的老龄化，我们需要老年人的贡献（contributions）。
15. 他们需要保持（stay）活跃和投入。