A:as twice many car
B:twice many as car
C:twice as many car
D:as many cars twice
决定声音传播速度的是( )
在科学计算器上按顺序按3,8,×,1,5,+,3,2,=,最后屏幕上显示( )
下列昆虫发育过程为不完全变态发育的是( )。