________his having been warned,he insisted on investing all his money on stocks.
A:Because of
B:In spite of
C:Instead of
D:In case of
如图,至少要将正方形ABCD中多少个空白的小正方形涂黑后,才可以使着色后的图形关于对角线BD对称( )
(12+15)÷3= ____