下列属于孔子教育思想的是( )
①因材施教
②知己知彼,百战不殆
③温故而知新
④知之为知之,不知为不知
(Ⅰ)证明:平面PAD⊥平面ABFE;
(Ⅱ)求正四棱锥P﹣ABCD的高h,使得二面角C﹣AF﹣P的余弦值是 223 .
A.They're under the bed.
B.It's my father's.
C.Try this.
D.I'm eleven.
E.So beautiful!
(____)⑴How old are you?
(____)⑵Where are my trousers?
(____)⑶The hat is so big.
(____)⑷Whose jacket is it?
(____)⑸Look at my dress.