A:落照/落色场院/场馆累赘/累累失误跑马卖解/苏三起解
B:中听/中肯宿仇/宿将一幢/灯影幢幢安步当车/螳臂当车
C:簇拥/箭镞巡视/驯服秕谷/如丧考妣缀玉连珠/苦学不辍
D:剽掠/慓悍花圃/浦口裨将/俾众周知每况愈下/坚贞不渝
- How much is it? ( )
- _______
移动通信是利用电磁波传递信号的,电磁波在空中传播的速度为____ m/s.