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 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. 1.
    1. A.
      anxious
    2. B.
      careful
    3. C.
      able
    4. D.
      proud
  2. 2.
    1. A.
      around
    2. B.
      inside
    3. C.
      between
    4. D.
      on
  3. 3.
    1. A.
      rise
    2. B.
      supply
    3. C.
      use
    4. D.
      movement
  4. 4.
    1. A.
      showing
    2. B.
      treating
    3. C.
      changing
    4. D.
      making
  5. 5.
    1. A.
      idea
    2. B.
      opinion
    3. C.
      story
    4. D.
      invention
  6. 6.
    1. A.
      difficult
    2. B.
      exciting
    3. C.
      interesting
    4. D.
      surprising
  7. 7.
    1. A.
      from
    2. B.
      over
    3. C.
      by
    4. D.
      during
  8. 8.
    1. A.
      dull
    2. B.
      dreamy
    3. C.
      tired
    4. D.
      peaceful
  9. 9.
    1. A.
      regular
    2. B.
      excited
    3. C.
      clear
    4. D.
      lively
  10. 10.
    1. A.
      shortened
    2. B.
      disturbed
    3. C.
      reset
    4. D.
      troubled
  11. 11.
    1. A.
      moments
    2. B.
      senses
    3. C.
      feelings
    4. D.
      effects
  12. 12.
    1. A.
      used
    2. B.
      allowed
    3. C.
      expected
    4. D.
      prevented
  13. 13.
    1. A.
      miss
    2. B.
      none
    3. C.
      need
    4. D.
      lack
  14. 14.
    1. A.
      show
    2. B.
      perform
    3. C.
      manage
    4. D.
      control
  15. 15.
    1. A.
      With
    2. B.
      Except
    3. C.
      As well as
    4. D.
      Rather than
  16. 16.
    1. A.
      waking
    2. B.
      moving
    3. C.
      living
    4. D.
      working
  17. 17.
    1. A.
      repeat
    2. B.
      remain
    3. C.
      happen
    4. D.
      last
  18. 18.
    1. A.
      believe
    2. B.
      agree
    3. C.
      realize
    4. D.
      allow
  19. 19.
    1. A.
      others
    2. B.
      the other
    3. C.
      all other
    4. D.
      other
  20. 20.
    1. A.
      only
    2. B.
      just
    3. C.
      still
    4. D.
      yet
 0  4530  4538  4544  4548  4554  4556  4560  4566  4568  4574  4580  4584  4586  4590  4596  4598  4604  4608  4610  4614  4616  4620  4622  4624  4625  4626  4628  4629  4630  4632  4634  4638  4640  4644  4646  4650  4656  4658  4664  4668  4670  4674  4680  4686  4688  4694  4698  4700  4706  4710  4716  4724  151629 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网