根据中文词义，选出对应单词，每题1分，满分40分。
段落
personality
paragraph
physics
个人的
practise
pressure
personal
性格
prize
personality
protect
污染
pollution
research
resource
重复
repeat
safety
satisfactory
研究
screen
secondary
research
满意的
satisfactory
paragraph
partner
次要的
secondary
personal
personality
服务
service
pollution
population