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

完形填空

阅读下面短文，完成文后题目。

　　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 1 to show that we all have a‘body clock 2 us, which controls the 3 and fall of our body energies, 4 us different from one day to the next.

　　The 5 of a‘body clock’should not be too 6 since the lives of most living things are controlled 7 the 24hour nightandday cycle(循环). We feel 8 and fall asleep at night and become 9 and energetic during the day. If the 24hour cycle is 10 most people experience unpleasant 11 . For example, people who are not 12 to working at night can find that 13 of sleep causes them to 14 badly at work.

　　 15 the daily cyclc of sleeping and 16 , we also have other cycles which 17 longer than one day. Most of us would 18 that we feel good on some days and not so good on 19 ; sometimes our ideas seem to flow arid at other times, they 20 do not exist.

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    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 ___1___ to show that we all have a “body clock”___2___ us, which controls the ___3___ and fall of our body energies, ___4___ us different from one day to the next.

    The ___5___ of a “body dock” should not be too___6___ since the lives of most living things are controlled ___7___ the 24-hour night-and-day cycle(循环). We feel ___8___ and fall asleep at night and become ___9___ and energetic during the day. If the 24-hour cycle is ___10___ most people experience unpleasant ___11___. For example, people who are not ___12___ to working at night can find that ___13___ of sleep causes them to ___14___ badly at work.___15___ the daily cycle of sleeping and ___16___, we also have other cycles which ___17___ longer than one day. Most of us would ___18___ that we feel good on some days and not so good on ___19___; sometimes our ideas seem to flow and at other times, they ___20___ do not exist.

1．A．anxious

B．able

C．careful

D．proud

2．A．inside

B．around

C．between

D．on

3．A．movement

B．supply

C．use

D．rise

4．A．showing

B．treating

C．making

D．changing

5．A．invention

B．opinion

C．story

D．idea

6．A．difficult

B．exciting

C．surprising

D．interesting

7．A．from

B．by

C．over

D．during

8．A．dull

B．tired

C．dreamy

D．peaceful

9．A．regular

B．excited

C．lively

D．clear

10．A．disturbed

B．shortened

C．reset

D．troubled

11．A．moments

B．feelings

C．senses

D．effects

12．A．prevented

B．allowed

C．expected

D．used

13．A．miss

B．none

C．lack

D．need

14．A．perform

B．show

C．manage

D．control

15．A．With

B．As well as

C．Except

D．Rather than

16．A．working

B．moving

C．living

D．waking

17．A．repeat

B．remain

C．last

D．happen

18．A．agree

B．believe

C．realize

D．allow

19．A．other

B．the other

C．all other

D．others

20．A．just

B．only

C．still

D．yet

    The ___5___ of a “body dock” should not be too___6___ since the lives of most living things are controlled ___7___ the 24-hour night-and-day cycle(循环). We feel ___8___ and fall asleep at night and become ___9___ and energetic during the day. If the 24-hour cycle is ___10___ most people experience unpleasant ___11___. For example, people who are not ___12___ to working at night can find that ___13___ of sleep causes them to ___14___ badly at work.___15___ the daily cycle of sleeping and ___16___, we also have other cycles which ___17___ longer than one day. Most of us would ___18___ that we feel good on some days and not so good on ___19___; sometimes our ideas seem to flow and at other times, they ___20___ do not exist.

1．A．anxious

B．able

C．careful

D．proud

2．A．inside

B．around

C．between

D．on

3．A．movement

B．supply

C．use

D．rise

4．A．showing

B．treating

C．making

D．changing

5．A．invention

B．opinion

C．story

6．A．difficult

B．exciting

C．surprising

D．interesting

7．A．from

B．by

C．over

D．during

8．A．dull

B．tired

C．dreamy

D．peaceful

9．A．regular

B．excited

C．lively

D．clear

10．A．disturbed

B．shortened

C．reset

D．troubled

11．A．moments

B．feelings

C．senses

D．effects

12．A．prevented

B．allowed

C．expected

D．used

13．A．miss

B．none

C．lack

D．need

14．A．perform

B．show

C．manage

D．control

15．A．With

B．As well as

C．Except

D．Rather than

16．A．working

B．moving

C．living

D．waking

17．A．repeat

B．remain

C．last

D．happen

18．A．agree

B．believe

C．realize

D．allow

19．A．other

B．the other

C．all other

D．others

20．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        to show that we all have “a body clock”         us, which controls the        and fall of our body energies,        us different from one day to the next.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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