That ship isn't ____ (Lily's father).
一个矩形ABCD的较短边长为2.
(1)如图①,若沿长边对折后得到的矩形与原矩形相似,求它的另一边长;
(2)如图②,已知矩形ABCD的另一边长为4,剪去一个矩形ABEF后,余下的矩形EFDC与原矩形相似,求余下矩形EFDC的面积.
如图1,为《探究加速度与外力间的关系》的实验装置(图中A为小车,B为带滑轮的长木板,C为水平桌面)
Generally speaking, there _______ be any survivors(幸存者) after such a long time. However, two young people were found _______. Life is super-nature!