已知二次函数y=ax2+bx+c的图象如图,其对称轴x=-1,给出下列结果①>4ac,②abc>0,③2a+b=0,④a+b+c>0,⑤a-b+c<0,则正确的结论是( )
A:①②③④
B:②④⑤
C:②③④
D:①④⑤
—Yes, we the strongest team in our school at last.
矩阵A=1002,向量α→=12,则A10α→= ( )
-Which would you like, a cup of tea or a glass of milk?- ______. I think I'll just have a glass of water.