单选题 With the progress in modern medicine, it is no longer difficult to {{U}}attain{{/U}} old age.
  • A. evade
  • B. reach
  • C. postpone
  • D. retard
【正确答案】 B
【答案解析】[解析] attain:达到,实现(目标);evade:逃脱,逃避;reach:达到;postpone:推迟;retard:延缓,妨碍……的生长