关于x的方程(m-4)x2+(m+4)x+2m+3=0当m=( )时,是一元二次方程,当m=( )时是一元一次方程。
≠4,=4
I do enjoy when I’m listening to the sound of the rain.
A.them
B.that
C.it
D.this
看图,完成对话。
A: Excuse me, Sonia. What's this 1 2 ?
B: 3 a 4 .
A: 5 6 is it?
B: 7 blue.A: Is this your 8 ?
B: No, it 9 .It's 10 11