慢速英语:American History: Teddy Roosevelt Leads Nation After McKinley’s Murder

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sworn in宣誓就职

2.Not everyone agreed on ways to solve society's problems.

agree on对某事〔物〕有同样看法, 商定〔同意〕某事, 商定做某事

例句：We agree on the question.
      我们在这个问题上意见一致。

      They agreed on leaving there the next day.
      他们一致同意第二天离开那里。

3.Then he became Commissioner of Police in New York City. Once again, he pushed for reforms.

push for急切、强烈地要求, 为…奋力争取

例句：People living near the airport are pushing for new rules about night flight.
      住在机场附近的人们正强烈要求制订出夜航班机的新规。

      He pushed me for an answer.
      他催我作出答复。