单选题 The doctor {{U}}speculated{{/U}} that high cholesterol was a contributing factor to fire patient's health problems.
  • A. expected
  • B. thought
  • C. assumed
  • D. guessed
【正确答案】 D
【答案解析】speculate推断，推测。guess猜测，推测。expect期待，预期。assume假定，假设。