填空题

  • A. a longer life expectancy for most people
  • B. artists are adroit in dealing with their painting subject
  • C. engage in the medical profession
  • D. careful study and experimentation
  • E. the chief centers for medical care in most countries
  • F. science and technology

Medical progress, improved health care, and better living conditions have ensured______.

【参考答案】

A
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