ThefirstcolorTVwasco的知识精选

ThefirstcolorTVwasconstructedin1928,butitwasnotuntil193...
问题详情:ThefirstcolorTVwasconstructedin1928,butitwasnotuntil1938___________thefirstprogramwasbroadcast.  A.when            B.which           C.that           D.befo...
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