At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh(肌肉) and blood but also of time. They were   41   to show that we all have a ‘body clock’   42   us, which controls the   43   and fall of our body energies,   44   us different from one day to the next.

The   45   of a ‘body clock’ should not be too   46   since the lives of most living things are controlled   47   the 24-hour night-and-day cycle(循环). We feel   48   and fall asleep at night and become   49   and energetic during the day. If the 24-hour cycle is   50   most people experience unpleasant   51  . For example, people who are not   52   to working at night can find that   53   of sleep causes them to   54   badly at work.

  55   the daily cycle of sleeping and   56  , we also have other cycles which   57   longer than one day. Most of us would   58   that we feel good on some days and not so good on   59  ; sometimes our ideas seem to flow and at other times, they   60   do not exist.

A. anxious                   B. careful                  C. able                    D. proud

A. around                  B. inside                 C. between              D. on

A. rise                      B. supply                  C. use                     D. movement

A. showing               B. treating                 C. changing             D. making

A. idea                    B. opinion                 C. story                   D. invention

A. difficult                   B. exciting                C. interesting           D. surprising

A. from                     B. over                            C. by                      D. during

A. dull                      B. dreamy                C. tired                   D. peaceful

A. regular                    B. excited                 C. clear                   D. lively

A. shortened              B. disturbed                     C. reset                   D. troubled

A. moments             B. senses                   C. feelings               D. effects

A. used                     B. allowed                C. expected              D. prevented

A. miss                      B. none                     C. need                  D. lack

A. show                       B. perform                C. manage               D. control

A. With                      B. Except                  C. As well as            D. Rather than

A. waking                B. moving                 C. living                  D. working

A. repeat                      B. remain                  C. happen                D. last

A. believe                  B. agree                    C. realize                 D. allow

A. others                      B. the other               C. all other              D. other

A. only                    B. just                      C. still                     D. yet

At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were able to show that we all have "a body clock"  36  us, which controls the rise and fall of our body energies,  37  us different from one day to the next.

The idea of "a body clock" should not be too  38   since the lives of most living things are controlled by the 24 hour night-and-day cycle. We feel  39   and fall asleep at night and become  40  and energetic during the day. If the 24 hour-cycle is disturbed, most people experience unpleasant  41   . For example, people who are not  42   to working at night can find that  43   of sleep causes them to  44   badly at work.  45  the daily cycle of sleeping and waking, we also have other cycles which last longer than one day. Most of us would  46    that we feel good on some days and not so good on others ; sometimes our ideas seem to flow and at other times, they  47  do not exist.

A．inside        B．around                    C．between                  D．on

A．showing       B．treating                   C．making                   D．changing

A．difficult        B．exciting                  C．surprising            D．interesting

A．dull             B．tired                          C．dreamy                  D．peaceful

A．regular          B．excited                   C．lively                         D．clear

A．moments       B．feelings                  C．senses                     D．effects

A．prevented      B．allowed                  C．expected                 D．used

A．miss             B．none                    C．lack                        D．need

A．perform        B．show                   C．manage                   D．control

A．With             B．As well as            C．Except                    D．Rather than

A．agree            B．believe                   C．realize                    D．allow

A．just               B．only                       C．still                        D．yet

At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were   36   to show that we all have “a body clock”   37    us, which controls the   38   and fall of our body energies,   39   us different from one day one to the next.

The   40   of “a body clock” should not be too   41   since the lives of most living things are controlled   42   the 24 hour night-and-day cycle. We feel   43   and fall asleep at night and become   44   and energetic during the day. If the 24 hour-cycle is   45   , most people experience unpleasant   46   . For example, people who are not   47   to working at night can find that   48   of sleep causes them to   49   badly at work.

  50   the daily cycle of sleeping and   51  , we also have other cycles which   52   longer than one day. Most of us would   53   that we feel good on some days and not so good on    54   ; sometimes our ideas seem to flow and at other times, they   55   do not exist.

36．A．anxious                  B．able                        C．careful                    D．proud

37．A．inside                     B．around                    C．between                  D．on

38．A．movement                     B．supply                    C．use                         D．rise

39．A．showing                 B．treating                   C．making                   D．changing

40．A．invention                B．opinion                   C．story                      D．idea

41．A．difficult                  B．exciting                  C．surprising               D．interesting

42．A．from                      B．by                          C．over                       D．during

43．A．dull                      B．tired                             C．dreamy                  D．peaceful

44．A．regular                   B．excited                   C．lively                            D．clear

45．A．disturbed                B．shortened                C．reset                       D．troubled

46．A．moments                B．feelings                  C．senses                     D．effects

47．A．prevented               B．allowed                  C．expected                 D．used

48．A．miss                       B．none                       C．lack                        D．need

49．A．perform                  B．show                      C．manage                   D．control

50．A．With                      B．As well as               C．Except                    D．Rather than

51．A．working                 B．moving                   C．living                     D．waking

52．A．repeat                     B．remain                    C．last                         D．happen

53．A．agree                      B．believe                   C．realize                    D．allow

54．A．other                      B．the other                 C．all other                  D．others

55．A．just                        B．only                       C．still                        D．yet

At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were   36   to show that we all have “a body clock”   37    us, which controls the   38   and fall of our body energies,   39   us different from one day one to the next.

The   40   of “a body clock” should not be too   41   since the lives of most living things are controlled   42   the 24 hour night-and-day cycle. We feel   43   and fall asleep at night and become   44   and energetic during the day. If the 24 hour-cycle is   45   , most people experience unpleasant   46   . For example, people who are not   47   to working at night can find that   48   of sleep causes them to   49   badly at work.

  50   the daily cycle of sleeping and   51  , we also have other cycles which   52   longer than one day. Most of us would   53   that we feel good on some days and not so good on    54   ; sometimes our ideas seem to flow and at other times, they   55   do not exist.

36．A．anxious                  B．able                        C．careful                    D．proud

37．A．inside                     B．around                    C．between                  D．on

38．A．movement                     B．supply                    C．use                         D．rise

39．A．showing                 B．treating                   C．making                   D．changing

40．A．invention                B．opinion                   C．story                      D．idea

41．A．difficult                  B．exciting                  C．surprising               D．interesting

42．A．from                      B．by                          C．over                       D．during

43．A．dull                      B．tired                             C．dreamy                  D．peaceful

44．A．regular                   B．excited                   C．lively                            D．clear

45．A．disturbed                B．shortened                C．reset                       D．troubled

46．A．moments                B．feelings                  C．senses                     D．effects

47．A．prevented               B．allowed                  C．expected                 D．used

48．A．miss                       B．none                       C．lack                        D．need

49．A．perform                  B．show                      C．manage                   D．control

50．A．With                      B．As well as               C．Except                    D．Rather than

51．A．working                 B．moving                   C．living                     D．waking

52．A．repeat                     B．remain                    C．last                         D．happen

53．A．agree                      B．believe                   C．realize                    D．allow

54．A．other                      B．the other                 C．all other                  D．others

55．A．just                        B．only                       C．still                        D．yet

At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh(肌肉) and blood but also of time. They were   41  to show that we all have a ‘body clock’   42  us, which controls the   43  and fall of our body energies,   44  us different from one day to the next.
The   45  of a ‘body clock’ should not be too   46  since the lives of most living things are controlled   47  the 24-hour night-and-day cycle(循环). We feel   48  and fall asleep at night and become   49  and energetic during the day. If the 24-hour cycle is   50  most people experience unpleasant   51 . For example, people who are not   52  to working at night can find that   53  of sleep causes them to   54  badly at work.
  55  the daily cycle of sleeping and   56 , we also have other cycles which   57  longer than one day. Most of us would   58  that we feel good on some days and not so good on   59 ; sometimes our ideas seem to flow and at other times, they   60  do not exist.