1．Tom sees robots making a positive (贡献) to society.
答案：contribution
2．The racial problem will greatly (威胁) the peace in the Middle East.
答案：threaten
3．The hunter set a (圈套) for the rabbits in the forest.
答案：trap
4．The experts (提倡) higher salaries for teachers.
答案：advocated
5．One misunderstanding I addressed was about social (牺牲)．
答案：sacrifice
