C

       When we can see well, we do not think about our eyes often．It is only when we can not see perfectly that we come to see how important our eyes are．

       People who are nearsighted can only see things that are very close to their eyes．Many people who do a lot of close work, such as writing and reading, become nearsighted．Then they have to wear glasses in order to see distant things clearly．

       People who are farsighted face just the opposite problem．They can see things that are far away, but they have difficulty reading a book unless they hold it at arm’s length．If they want to do much reading, they must get glasses too．

       Other people do not see clearly because their eyes are not exactly the right shape．This, too, can be corrected by glasses．Some people’s eyes become cloudy because of cataracts．Long ago these people often became blind．Now, however, it is possible to operate on the cataracts and remove them．

       When night falls, colors become fainter to the eyes and finally disappear．After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers．Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its direction．This is because when you turn your head, you are looking at the thing too directly．Men on guard duty sometimes think they see something moving to one side of them．When they turn to look straight at it, they can not see it any more, and they believe they were mistaken．However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark．

64．We don’t know that our eyes are of great importance until ________．

       A．we think about our eyes      B．we cannot see clearly

       C．we wear glasses              D．we have to do much reading

65．According to the passage, a ________ is more likely to be nearsighted．

       A．student         B．doctor          C．guard           D．painter

66．People who are farsighted ________ ．

       A．can do a lot of close work without glasses

       B．can only see things that are very close to their eyes

       C．have difficulty reading a book if they hold it at arm’s length

       D．can correct their eyes by glasses

67．To see a small thing at night, it is better to look ________ ．

       A．with wide open eyes         B．with half shut or narrowed eyes

       C．straight at it                 D．in a slightly different direction

More than a third of the babies born this year could receive a 100th birthday message from whoever happens to be on the throne in the second decade of the 22nd century, according to figures published by the Office for National Statistics (ONS). It forecasts that 35% of the 826,000 people born in 2012 will live to become centenarians.

But a long life is not unalloyed good news. David Sinclair, head of policy and research at the International Longevity Centre UK, warned that for many the future may mean social isolation(隔离）as they live longer than friends and members of their families.

"It is of course good news that so many more people are living longer," he said, "but there is a big 'but¹. We will be older, but in worse health, and at high risk of living alone. The other problem is that we are very poor at forward planning. We deal with the problems that are under our noses, but even problems two or three years away seem quite distant enough to put off. When you're talking about forecasts for a time half a century away and more, I see no evidence that we are putting in place the measures to deal with it."

This year there will be 14,500 centenarians in the UK, a number which is expected to increase to 110,000 in 2035.

Women have higher life expectancies than men at every age: the likelihood of a girl born this year reaching her century is estimated to be 39%; for boys the figure is 32%.

The estimated number of female centenarians has risen from 500 in 1961 to more than 10,000 in 2010，a figure which is projected to reach 71,000 by 2035 and 276,000 by 2060.

Men are also living far longer, although their numbers are far fewer. There were an estimated 92 male centenarians in 1961 and just below 2,000 in 2010.

1.The underlined word centenarians probably means people who_____.

A. are born this year B. live longer than their friends

C. are in poor health D. are a hundred or more years old

2.From what David Sinclair said, we can learn_____.

A.he doesn't believe so many people are living longer

B. the older we are, the more likely we are to live alone and in poor health

C.the people who are good at forward planning are likely to live longer

D.too distant planning is not always necessary for most of us

3.Which of the following statement is true?

A.About 289，100 people born in 2012 will live to 100.

B.More men will reach their century than women in the future.

C.The number of the female centenarians was 1,000 in 1970s

D.More than 600 people reached their century in 1961.

4.What does this passage mainly talk about?

A.A long life is not always good news.

B.A long life also means social and physical isolation

C.In the future, more people will live to 100 in the UK.

D.It is good to live to 100.

 

More than a third of the babies born this year could receive a 100th birthday message from whoever happens to be on the throne in the second decade of the 22nd century, according to figures published by the Office for National Statistics (ONS). It forecasts that 35% of the 826,000 people born in 2012 will live to become centenarians.

But a long life is not unalloyed good news. David Sinclair, head of policy and research at the International Longevity Centre UK, warned that for many the future may mean social isolation(隔离）as they live longer than friends and members of their families.

"It is of course good news that so many more people are living longer," he said, "but there is a big 'but1. We will be older, but in worse health, and at high risk of living alone. The other problem is that we are very poor at forward planning. We deal with the problems that are under our noses, but even problems two or three years away seem quite distant enough to put off. When you're talking about forecasts for a time half a century away and more, I see no evidence that we are putting in place the measures to deal with it."

This year there will be 14,500 centenarians in the UK, a number which is expected to increase to 110,000 in 2035.

Women have higher life expectancies than men at every age: the likelihood of a girl born this year reaching her century is estimated to be 39%; for boys the figure is 32%.

The estimated number of female centenarians has risen from 500 in 1961 to more than 10,000 in 2010，a figure which is projected to reach 71,000 by 2035 and 276,000 by 2060.

Men are also living far longer, although their numbers are far fewer. There were an estimated 92 male centenarians in 1961 and just below 2,000 in 2010.

35.　 The under lined word centenarians probably means people who_____.

A. are born this year　　 B. live longer than their friends

C. are in poor health　　 D. are a hundred or more years old

36.　 From what David Sinclair said, we can learn_____.

A.　 he doesn't believe so many people are living longer

B.　 the older we are, the more likely we are to live alone and in poor health

C.　 the people who are good at forward planning are likely to live longer

D.　 too distant planning is not always necessary for most of us

37.　 Which of the following statement is true?

A.　 About 289，100 people born in 2012 will live to 100.

B.　 More men will reach their century than women in the future.

C.　 The number of the female centenarians was 1,000 in 1970s

D.　 More than 600 people reached their century in 1961.

38.　 What does this passage mainly talk about?

A.　 A long life is not always good news.

B.　 A long life also means social and physical isolation

C.　 In the future, more people will live to 100 in the UK.

D.　 It is good to live to 100.

-What will people die of 100 years from now? If you think that is a simple question, you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of new medicine, the human body will last a very long time. Death will come mainly from accidents, murder and war. Today’s leading killers, such as heart disease, cancer, and aging itself, will become distant memories.
In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live, Human brains were known to decide the final death. Cells are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine repair their organs(器官). The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on—in much the same way our bodies make new skin cells to take the place of old ones.
It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence, but many technical problems still must be cleared up on the way to this wonderful future.
【小题1】 According to the passage, human death is now mainly caused by __________.

A．diseases and aging

B．accidents and war

C．accidents and aging

D．heart disease and war

【小题2】 In the author’s opinion, today’s most important advance in technology lies in __________.

A．brain cell	B．the Internet
C．medicine	D．human organ

【小题3】Humans may live longer in the future because _________.

A．heart disease will be far away from us

B．human brains can decide the final death

C．the basic materials of cells will last forever

D．human organs can be repaired by new medicine

【小题4】How long can humans live in the future according to the passage?

A．Over 100 years.

B．More than 120 years.

C．About 150 years.

D．The passage doesn't tell us.