He ____ been afraid of dogs ____ ____ since his dad kept a pet dog.
19世纪末,一位诗人曾赋诗:“春愁难遣强看山,往事惊心泪欲潸。四百万人同一哭,去年今日割台湾。”该诗的创作背景是( )
(1+12+13+14)×(12+13+14+16)-(1+12+13+14+16)×(12+13+14)= ____