以下是关于【友谊回声】的公开课/优质课视频，一共38个
41:4727-
39:4953 -
28:1310 -
41:5617 -
42:2842 -
40:1820 -
15:5896 -
06:03102 -
42:02102 -
41:5659 -
41:4726 -
26:3083 -
39:49122 -
17:0128 -
17:01121 -
41:5653 -
40:1891 -
42:2867 -
30:0920 -
24:5775 -
30:0952 -
39:5370 -
42:33102 -
46:0564 -
40:3476 -
31:2080 -
29:54139 -
26:4728 -
43:2169 -
32:2070 -
31:0487 -
40:1839 -
42:2835 -
40:0251 -
36:0499 -
40:06101 -
41:5964 -
31:3886