我会仿写。

1．恋恋不舍                                                                                      

2．四面八方                                                                                      

3．笑眯眯                                                                                         

一台雷达向一架轰炸机发射电磁波，在2×10^-4s收到了反向回来的信号，那么，此时飞机距发射站有多远？