A:①②③④
B:②③④⑤
C:②④⑤⑥
D:①④⑤⑥
选出你所听到的单词( )
8km750m=____m
The TV star lost _________ his girlfriend _________ his show.
如图,在四边形ABCD中,∠ADC=∠ABC=90°,AD=CD,DP⊥AB于P.若四边形ABCD的面积是18,则DP的长是( ).