A:①②
B:①④
C:②③
D:③④
有关黑子的说法,正确的是( )
x
1.2
1.3
1.4
1.5
x2+x﹣3
﹣0.36
﹣0.01
0.36
0.75
— Why are you going to the gift shop?
— Because l want to buy a present for my mother today.