单选题 The great American scientist Edison had a remarkable ______ for inventing new things.
  • A. requirement
  • B. aptitude
  • C. obligation
  • D. vulnerability
【正确答案】 B
【答案解析】[解析] requirement需求，要求；aptitude才能，天赋；obligation义务，职责；vulnerability弱点。所以，本题选B。