My father's grandfather who was famous in my hometown ________ the hospital in 1923.
A:set up
B:caught up
C:make up
D:climbed up
(Ⅰ)求证:平面PAD⊥平面ABCD
(Ⅱ)若E在CP上且二面角E﹣BD﹣C所成的角的余弦值为 33 ,求CE的长.
受精卵的形成场所和胚胎发育的场所分别是( )