19. force v. → 过去式 → 过去分词 20. surprise n. & v. → adj. → (对……感到吃惊) 21. health n. → adj. → adj. (反义词)→ (保持健康) 22. risk n. & v.→ (中文意思) 23. possible adj. → adv. ...
Results Data of 1 269 military personnels(army 419,navy 419,air force 413) were collected from 3 sampling spots.The percentage of the personnels who visited the dentist was higher in those with a higher education,higher rank,and older age by simple-factor analysis.And age,to be from,arms,...