单选题 Psychologists have stated that {{U}}negative thinking{{/U}} can consume your life and cause problems.
  • A. optimism
  • B. patriotism
  • C. heroism
  • D. pessimism
【正确答案】 D
【答案解析】negative thinking：悲观，负面想法，消极思维；optimism：乐观；patriotism：爱国；heroism：英雄行为；pessimism：悲观。