单选题 We have a responsibility to ensure our nation's continued prosperity and the most {{U}}sensible{{/U}} way to do this is by investment in basic scientific research.
  • A. effective
  • B. efficient
  • C. significant
  • D. reasonable
【正确答案】 D
【答案解析】[解析] sensible“明智的”，四个选项：effective“有效的”；efficient“有效的”；significant“有意义的，重要的”；reasonable“合理的，理智的”；所以D项符合题意。