The child doesn't need any help. He is old enough to ______ himself.
A:put on
B:wear
C:dress
D:in
函数y=Asin(ωx+φ)+k(A>0,ω>0,|φ|<π2,x∈R)的部分图象如图所示,则该函数表达式为( )
Mrs. Black teaches us Chinese. (对划线部分提问.)
____
①3,4,5;
②5,12,13;
③7,24,25;
④9,40,41,…
请你写出有以上规律的第⑤组勾股数:____.