第二十四章单元测试
  1. There is no for the anti-aging products hawked by profit-seeking entrepreneurs.( )

  2. A:scientific basis
    B:position statement
    C:universal appeal
    D:random damage

    答案:scientific basis

  3. When the diet includes enough nutrition for routine maintenance of the body, extends life and the duration of good health. ( )

  4. A:caloric restriction
    B:regular exercise
    C:routine maintenance
    D:good nutrition
  5. Once the engine of life switches on, the body inevitably sows the of its own destruction.( )

  6. A:plants
    B:seeds
    C:sweats
    D:tears
  7. We live longer not because we have altered the way we age because we have altered the way we live.( )

  8. A:and
    B:therefore
    C:but
    D:however
  9. They can envision a time treatment based on an understanding of aging can help slow its progression.( )

  10. A:which
    B:as
    C:when
    D:since
  11. is true of other interventions, though, no one has shown that diet or exercise, or both, directly influences aging. ( )

  12. A:That
    B:What
    C:Which
    D:As
  13. According to the text, gold is the most potent anti-aging substance in existence.( )

  14. A:错 B:对
  15. According to the text, some people think aging is a genetically programmed process, playing itself out on a rigidly predetermined time schedule. ( )

  16. A:对 B:错
  17. According to the text, there are no quick fixes that will permit us to treat aging as if it were a disease because there is not a specific genetic program for aging and death. ( )

  18. A:对 B:错
  19. According to the text, the recommendations for diet and exercise to combat aging might be helpful. ( )

  20. A:错 B:对

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