— is the population of your city?
—There are about four .
A:What; million
B:What; millions
C:How many; million
D:How many; millions
用配方法解一元二次方程x2+6x﹣8=0时可配方得( )
加偏旁,变新字。
宗---____ ____ 瓜----____ ____