运用多元史观来评价同一历史现象,能够使我们对历史现象的理解更透彻。可以用下列不同史观分析的历史现象是( )
A:古代科技发展
B:文艺复兴
C:新航路开辟
D:郑和下西洋
八九七十二
① Time for breakfast. ____ A. Sing and dance.
② Time for PE class____ B. Drink some milk.
③ Time for English class ____ C. Read and write.
④ Time for music class. ____ D. Jump and run.
若cosπ-α=53且α∈π2,π,则sinπ+α=( )