—What do you think of the film named Let the bullets fly(让子弹飞)?—I have no idea, because I _____ it.
A:don't see
B:won't see
C:haven't seen
D:didn't see
在本地排放源中,机动车、船、飞机、非道路移动机械等为流动源,而在流动源中污染排放“贡献”最高的是 ( )
50g=____kg
0.5×103kg/m3=____g/cm3.
下列划线字注音有误的一项是( )