（题文）Life is___,but there is no limit_____.
A. limited,to learn B. limit,to learn
C. limited, to learning D. limited,of learning
高三英语单项填空中等难度题
（题文）Life is___,but there is no limit_____.
A. limited,to learn B. limit,to learn
C. limited, to learning D. limited,of learning
高三英语单项填空中等难度题查看答案及解析
Is there a limit to the number of years that a person can expect to live? Can changes in life-style add years to one’s life? Throughout history people have sought answers to these questions and others.
Various myths offer the hope of great longevity. In the imaginary land of Shangri-La, for example, people are said to lead a charmed existence for a thousand years. The Spanish explorer Ponce de Leon was convinced that he would find the Foundation of Youth in what is now the state of Florida. According to the Bible, Methuselah lived to be more than 900 years old.
The subject of longevity is fascinating, and scientists study individuals such as Jeanne Calment to learn about the aging process. Calment died in 1997 in Arles, France, at the age of 122. She never married, and she lived in her own apartment until moving to a retirement community when she was 109.
Most scientists agree that bodies will last, at best, about 125 years. This potential has changed little since modern human beings appeared more than 100 thousand years age. Recent improvements in medicine and the environment have extended life expectancy, especially for those from poorer parts of the world. It is not clear, however, whether such improvements will lengthen life expectancy beyond a certain point.
Life expectancy is the number of years an infant can be expected to live, given the conditions into which it is born. Life expectancy, therefore, is affected by nutrition, medical care, and social and political circumstances. An individual’s genetic makeup is also an important factor. Children from long-lived families can hope to enjoy long lives themselves. According to recent data, the average life expectancy worldwide in 1998 was 67 years. This can be compared with an average life expectancy of 77 in the United States.
In 1970 the average life expectancy worldwide was 61 years, or 6 years less than it was in 1998. This same period saw a drop in infant mortality -— the death of a child before the first birthday-—from 80 births out of 1,000 to 54 births out of 1,000. According to some researchers, the rise in the average life expectancy is due primarily to the drop in infant mortality. It is not so much that adults are living to an older age. It is, rather, that more people are living into adulthood because more children are surviving beyond their first birthdays.
1.Infant mortality is defined as ________ .
A. the number of children born alive
B. the kinds of behavior typical of very young children
C. the number of children, out of 1,000 births, who die before their first birthday
D. the typical and obvious thoughts of very young children
2.Although it may be possible to improve the life expectancy of a particular group of people, ________ .
A. it is more difficult to affect the rate of infant mortality
B. it is unlikely that one will be able to extend the potential life span of human beings in general
C. the process of evolution is extending the potential life span beyond 125 years
D. the potential that bodies will last, at best, about 125 years has changed much since modern human beings appeared
3.One can infer that people have at times imagined that ________ .
A. people live longer in the state of Florida
B. a long life is a burden rather than a blessing
C. it is possible to find a way to live for centuries
D. life expectancy is affected by a couple of factors
4.One can conclude that ________ .
A. the aging process can be stopped.
B. the aging process is inevitable.
C. life expectancy in the United States will soon reach 125 years.
D. the average life expectancy worldwide is decreasing
高三英语阅读理解中等难度题查看答案及解析
短文改错(共 10 小题；每小题 1.5 分，满分 15 分)
Time is valuable but limit. There's a famous saying，
“Time is money”， this shows the importance of time. When ，1.________
time has gone, it will never return back. It is a pity 2.________
when many people make poor use of time. They spend their 3.________
precious time oversleeping, drinking and traveling. We don't 4.________
realized wasting time equal to wasting part of their life. 5.________
They always regret having made a little achievement so far. 6.________
Therefore, we should form the habit of value time. Do not 7.________
put off what can be done today until tomorrow. Lazy 8.________
will not only bring us failure, but also lead us on the road 9.________
of poverty and even death. 10._______
高三英语短文改错简单题查看答案及解析
第一节 短文改错（共10小题；每小题1分，满分10分）
Time is valuable but limit. There’s a famous saying, 1. ________
“Time is money”, this shows the importance of time. When 2．________
time has gone, it will never return back. It is a pity 3．________
when many people make poor use of time. They spend their 4．________
precious time oversleeping, drinking and traveling. We don’t 5．________
realize wasting time equal to wasting part of their life. 6．________
They always regret having made little achievement so far. 7．________
Therefore, we should form the habit of value time. Do not 8．________
put off what can be done today until tomorrow. Lazy 9．________
will not only bring us failure, but also lead us on the road 10．________
of poverty and even death.
高三英语短文改错简单题查看答案及解析
There is only one who is capable of setting limits to your growth, and it _____ well be you.
| A．may | B．should | C．will | D．must |
高三英语单项填空简单题查看答案及解析
There is only one who is capable of setting limits to your growth, and it _____ well be you.
A. may B. should C. will D. must
高三英语单项填空简单题查看答案及解析
-- Shall we take a taxi there since time is limited?
-- ________. It should be hard to get one during the rush hour.
A.Go ahead B. Don’t mention it
C. No doubt D. Just forget it
高三英语单项填空中等难度题查看答案及解析
Now _____ understanding of climate change is no longer limited to ____ small group of scientists or environmentalists.
A. / ; a B. an ; a C. the ; the D. a ; /
高三英语单项填空中等难度题查看答案及解析
. Just like a voyage at sea, our life journey, ______ time is limited, is full of difficulties as well as opportunities.
A. what B. of which C. while D. whose
高三英语单项填空简单题查看答案及解析
Just like a voyage at sea, our life journey, ______ time is limited, is full of difficulties as well as opportunities.
A. what B. of which C. while D. whose
高三英语单项填空中等难度题查看答案及解析