Like distance runners on measured course, all of us will move through time in a roughly predictable pattern.

In the first stage of our lives, we develop and grow, reaching toward the top of physical vitality (energy).

After we grow up, however, the body begins a process of gradually wearing out.

A new awareness of physical fitness may help lengthen our years of health and vitality, yet nothing we do will work to stop the unavoidable force of aging.

Most of the changes of aging take place deep inside the body. The lungs become less able to take in oxygen. Powerful muscles gradually lose their strength. The heart loses power and pumps less blood. Bones grow easier to break.

Finally, we meet a stress, a stress that is greater than our physical resistance. Often, it is only a minor accident or chance infection (a disease caused by virus), but this time, it brings life to an end.

In 1932, a classic experiment nearly doubled the lifetime of rats, simply by cutting back the calories (unit for measuring the energy value of food) in their diet. The reason for the effect was then unknown.

Today, at the university of California at Berkley, Dr. Paul Seagle has also greatly lengthened the normal lifetime of rats. The result was achieved through a special protein (蛋白质) limited diet, which had a great effect on the chemistry of the brain. Seagle showed that within the brain, specific chemicals control many of the signals that influence aging. By changing that chemical balance, the clock of aging can be reset.

For the first time, the mystery (something that is difficult to understand or to explain) of why we age is being seriously challenged. Scientists in many fields are now making striking and far-reaching discoveries.

An average lifetime lasts 75 years, yet in each of us lies a potential for a longer life. If we could keep the vitality and resistance to disease that we have at age twenty, we would live for 800 years.

68．What does the underlined word “it” refer to?

A．Physical vitality.              B．Stress.             C．Aging.                 D．Physical resistance.

69．The author believes the following EXCEPT that         .

A．human’s life pattern is predictable

B．physical fitness can’t stop the force of aging

C．human’s lifetime will last longer than 75 years

D．all of the changes of aging take place deep inside the body

70．How did Dr. Paul Seagle lengthen the lifetime of rats in his experiment?

A．By limiting the protein in their diet.

B．By cutting the calories in their diet.

C．By resetting their clock of aging.

D．By keeping their physical fitness.

71．What is probably the best title for the article?

A．Two Great Experiments                               B．The Mystery of Human Life

C．Ways to lengthen Human Life                       D．The Breakthrough in the Study of Aging

完形填空 (共20小题；每小题1分, 满分20分)

请认真阅读下面短文, 从短文后各题所给的A、B、C、D四个选项中, 选出最佳选项, 并在答题卡上将该项涂黑。

My first full time job after high school was selling vacation packages via telephone for a well-known company.  One day, the dialer ____36____ me to a man who answered the phone and ____37_____ a bit out of breath.  I started with my normal pitch（推销）, and _____38____ to hear the normal, "I don't want any," and be hung up on.  

Instead he spoke in a low, weak voice and told me how he wished he could take a ____39_____ like the one I was offering, but couldn't ____40_____ he was dying of emphysema (肺气肿).  He ____41_____ how he was on oxygen, and it took almost all his ____42_____ just to get to the phone to answer the call.  I ____43_____, and my heart fell into my stomach.  He asked me if I smoked, which I did, and then begged me to stop.  He told me smoking is ____44_____ was killing him, and how horrible it was.  He told me to ____45_____ every day with my loved ones, and tell them all the time how much I love them. At this ____46_____, I was in tears, and couldn't control myself, and he could tell. 

After a few moments, I decided to write down his name and ____47_____, and just send him a card telling him that I ____48_____ his advice and that I would pray for him and his family.  Shortly after, I received a nice letter back from Frank, along with a picture of him and his wife.  We continued to write back and forth over the next few months or so, and became very ____49_____ of each other.  He was old enough to be my grandfather, and in many ways, I felt ____50_____ he was. 

It was about a year later I received a letter from his wife, and when I started to read it, my eyes were filled with tears.  She told me how Frank's ____51_____ with the disease had finally come to an end, and he ____52_____ shortly before Christmas.  She wanted to thank me for the letters I had written to Frank, and then explained how Frank touched many lives over the years.  At his ____53_____, to show just that, they read the 1st letter I had written to Frank to show how he ____54_____ a 19 year old he had ____55_____ even met. 

I will never forget how much that meant to me.

36. A. took                 B. connected             C. accompanied                 D. led

37. A. felt                            B. looked                    C. sounded                          D. proved

38. A. expecting       B. wondering            C. considering                    D. worrying

39. A. break               B. rest                         C. change                                     D. vacation

40. A. because                   B. though                            C. while                                D. before

41. A. described       B. exposed                 C. explained                        D. expressed

42. A. power             B. energy                   C. strength                         D. force

43. A. apologized     B. excused                 C. pardoned                        D. forgave

44. A. that                 B. what                       C. which                               D. how

45. A. take                 B. cost                        C. pay                                   D. spend 

46. A. point                B. case                        C. way                                  D. situation

47. A. number           B. hobby                     C. address                           D. whish

48. A. agreed            B. appreciated                   C. followed                          D. approved

49. A. interested      B. content                  C. fond                                 D. curious

50. A. if only              B. even if                    C. only if                               D. as if

51. A. battle              B. strike                      C. defense                           D. working

52. A. gave away     B. turned away         C. took away                      D. passed away

53. A. birthday                   B. funeral                            C. ceremony                       D. performance

54. A. changed                   B. improved               C. affected                          D. promoted

55. A. always            B. seldom                   C. ever                                 D. never

完形填空 (共20小题；每小题1分,  满分20分)

请认真阅读下面短文, 从短文后各题所给的A、B、C、D四个选项中, 选出最佳选项, 并在答题卡上将该项涂黑。

My first full time job after high school was selling vacation packages via telephone for a well-known company.  One day, the dialer ____36____ me to a man who answered the phone and ____37_____ a bit out of breath.  I started with my normal pitch（推销）, and _____38____ to hear the normal, "I don't want any," and be hung up on.  

Instead he spoke in a low, weak voice and told me how he wished he could take a ____39_____ like the one I was offering, but couldn't ____40_____ he was dying of emphysema (肺气肿).  He ____41_____ how he was on oxygen, and it took almost all his ____42_____ just to get to the phone to answer the call.  I ____43_____, and my heart fell into my stomach.  He asked me if I smoked, which I did, and then begged me to stop.  He told me smoking is ____44_____ was killing him, and how horrible it was.  He told me to ____45_____ every day with my loved ones, and tell them all the time how much I love them. At this ____46_____, I was in tears, and couldn't control myself, and he could tell. 

After a few moments, I decided to write down his name and ____47_____, and just send him a card telling him that I ____48_____ his advice and that I would pray for him and his family.  Shortly after, I received a nice letter back from Frank, along with a picture of him and his wife.  We continued to write back and forth over the next few months or so, and became very ____49_____ of each other.  He was old enough to be my grandfather, and in many ways, I felt ____50_____ he was. 

It was about a year later I received a letter from his wife, and when I started to read it, my eyes were filled with tears.  She told me how Frank's ____51_____ with the disease had finally come to an end, and he ____52_____ shortly before Christmas.  She wanted to thank me for the letters I had written to Frank, and then explained how Frank touched many lives over the years.  At his ____53_____, to show just that, they read the 1st letter I had written to Frank to show how he ____54_____ a 19 year old he had ____55_____ even met. 

I will never forget how much that meant to me.

36. A. took                 B. connected             C. accompanied                 D. led

37. A. felt                            B. looked                    C. sounded                          D. proved

38. A. expecting       B. wondering            C. considering                    D. worrying

39. A. break               B. rest                         C. change                                     D. vacation

40. A. because                   B. though                            C. while                                D. before

41. A. described       B. exposed                 C. explained                        D. expressed

42. A. power             B. energy                   C. strength                         D. force

43. A. apologized     B. excused                 C. pardoned                        D. forgave

44. A. that                 B. what                       C. which                               D. how

45. A. take                 B. cost                        C. pay                                   D. spend 

46. A. point                B. case                        C. way                                  D. situation

47. A. number           B. hobby                     C. address                           D. whish

48. A. agreed            B. appreciated                   C. followed                          D. approved

49. A. interested      B. content                  C. fond                                 D. curious

50. A. if only              B. even if                    C. only if                               D. as if

51. A. battle              B. strike                      C. defense                           D. working

52. A. gave away     B. turned away         C. took away                      D. passed away

53. A. birthday                   B. funeral                            C. ceremony                       D. performance

54. A. changed                   B. improved               C. affected                          D. promoted

55. A. always            B. seldom                   C. ever                                 D. never

阅读下面短文，从短文后所给各题的四个选项（Ａ、Ｂ、Ｃ、Ｄ）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

There is an old man in the village that everybody___1___asks him for help whenever they come____2___problems．He is named the No 1___3___man in the world．

In the village，there is one young man who is also very___4___．So he is very unhappy___5_______ the old man could be more___6___than him．One day he___7___the old man with a bird in his hand．He asked the old man a___8___question: “ Is the bird in my hand dead or alive?”

The old man___9___at the bird and answered: “Whether the bird is dead or not___10___on you．If I say it is alive，you will___11___the bird to death．If I say it is dead, you will set it___12___．So when things are in your hands, you___13___your own fate．”

On most occasions, the__14___of whether success or failure___15___our hands．It is your________16___whether you want to succeed or not．__17___you cannot control certain events that___18___, you can choose how___19___want to react．Exercise your___20___of positive thinking．And then you will find you are getting more and more clever, and are able to solve problems much more easily．

1.A．never                      B．always                C．seldom                D．often

2.A．over                        B．with                    C．across                 D．to

3.A．wise                        B．stupid                  C．brave                  D．kind

4.A．intelligent                 B．helpful                 C．active                  D．promising

5.A．because                   B．that                     C．though                D．when

6.A．foolish                     B．popular                C．lovely                  D．promising

7.A．showed                   B．provided              C．attracted              D．approached

8.A．simple                     B．puzzling               C．silly                    D．familiar

9.A．turned                     B．called                  C．looked                 D．glared

10.A．falls                       B．depends               C．trusts                  D．stands

11.A．kill                         B．shoot                  C．squeeze               D．frighten

12.A．up                         B．down                  C．about                  D．free

13.A．decide                   B．tell                      C．try                      D．win  

14.A．question                 B．outcome              C．factor                 D．truth

15.A．puts up                  B．goes away           C．lies in                  D．takes in

16.A．view                      B．opinion                C．idea                    D．choice

17.A．Since                     B．As                      C．Although             D．Whether

18.A．occur                    B．go                       C．present                D．have

19.A．others                    B．we                      C．you                     D．they

20.A．energy                   B．power                 C．force                  D．strength

第三节完形填空（共20小题，每小题1分，满分20分）
阅读下面短文，从短文后所给各题的四个选项（Ａ、Ｂ、Ｃ、Ｄ）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
There is an old man in the village that everybody___21___asks him for help whenever they come____22___problems．He is named the No 1___23___man in the world．
In the village，there is one young man who is also very___24___．So he is very unhappy___25_______ the old man could be more___26___than him．One day he___27___the old man with a bird in his hand．He asked the old man a___28___question: “ Is the bird in my hand dead or alive?”
The old man___29___at the bird and answered: “Whether the bird is dead or not___30___on you．If I say it is alive，you will___31___the bird to death．If I say it is dead, you will set it___32___．So when things are in your hands, you___33___your own fate．”
On most occasions, the__34___of whether success or failure___35___our hands．It is your________36___whether you want to succeed or not．__37___you cannot control certain events that___38___, you can choose how___39___want to react．Exercise your___40___of positive thinking．And then you will find you are getting more and more clever, and are able to solve problems much more easily．
21．A．never                  B．always                C．seldom                D．often
22．A．over                   B．with                    C．across                 D．to
23．A．wise                   B．stupid                 C．brave                  D．kind
24．A．intelligent           B．helpful                C．active                  D．promising
25．A．because               B．that                     C．though                D．when
26．A．foolish                B．popular               C．lovely                 D．promising
27．A．showed               B．provided             C．attracted              D．approached
28．A．simple                B．puzzling              C．silly                    D．familiar
29．A．turned                 B．called                  C．looked                D．glared
30．A．falls                    B．depends               C．trusts                  D．stands
31．A．kill                     B．shoot                  C．squeeze               D．frighten
32．A．up                      B．down                  C．about                  D．free
33．A．decide                 B．tell                     C．try                      D．win  
34．A．question              B．outcome              C．factor                  D．truth
35．A．puts up               B．goes away           C．lies in                 D．takes in
36．A．view                   B．opinion               C．idea                    D．choice
37．A．Since                  B．As                      C．Although             D．Whether
38．A．occur                  B．go                      C．present                D．have
39．A．others                 B．we                      C．you                     D．they
40．A．energy                B．power                 C．force                   D．strength