更多"While radio broadcasting was still "的相关试题:
[单项选择]While radio broadcasting was still (31) its early stage the wonder of television was (32) being developed. The first step towards its invention was (33) in 1873 but the person responsible for developing (34) was John Logie Baird. In 1926 he gave the (35) of a television picture.A. during B. on C. in D. with