Leeanne Carlson wanted $ 20 million for his large house with two gardens, but he _______ $ 10 million.
A:settled for
B:settled down
C:settled on
D:settled in
在平行四边形ABCD中,AC为一条对角线,AB→=(2,4),AC→=(1,3),则BD→等于( )
九十亿零四十五万六千写作:900456000。