Linda is _______ her mother in many ways. For example, they are both tall and thin.
A:similar to
B:kind to
C:friendly to
D:different from
已知△ABC的周长为2+1,且sinA+sinB=2sinC,则边AB的长为____
试说明下列各图小实验所反映的物理知识:
绿叶在光下合成淀粉的实验中,把盆栽的天竺葵放在暗处一昼夜,其目的是( )
把一磁铁悬挂起来,现拿一铁块靠近磁铁,则( )