第19题: [单项选择]The first two assumptions made about the ______ of TV were dead wrong: that it would bury radio and it would be a threat to movies. A. recession B. advent C. diversity D. bias 参考答案:B 答案解析:B项的advent“到来,出现”符合题意。其他三项:recession经济萧条;diversity不同,变化多端;bias偏见。