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How long can human beings live? Most scientists who study old age think that the human body is【C1】______to live no longer than 1
How long can human beings live? Most scientists who study old age think that the human body is【C1】______to live no longer than 1
admin
2019-06-28
23
问题
How long can human beings live? Most scientists who study old age think that the human body is【C1】______to live no longer than 120 years.【C2】______, 110 years is probably the longest that anyone could hope to live—if he or she is extremely healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce【C3】______They wear out, and as a result, we get old and eventually die.
Even though we can’ t live forever, we are living a【C4】______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 Sixty-five may be out-of-date as the dividing line between middle age and old age. After all, many older people don’t begin to experience physical and mental decline【C5】______after age 75.
People are living longer because more people survive childhood. Before modern medicine changed the laws of nature, many children died【C6】______common childhood disease. Now that the chances of dying【C7】______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【C8】______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,【C9】______some see chances, not disaster. Many men and women in their "golden years" are healthy, still active, and young in mind.
As the society grows old, we need the contributions of our older citizens.【C10】______long lives ahead of them, they need to stay active and devoted.
【C7】
选项
A、poor
B、young
C、sick
D、quiet
答案
B
解析
poor:穷的;young:年轻的;sick:生病的;quiet:安静的。根据上一句可推知,早逝的可能性小了很多,dying young意为“早逝”。故选B。
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英语题库普高专升本分类
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英语
普高专升本
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