第19题: [单项选择]It is hard to tell whether we are going to have a boom in the economy or a ______. A. concession B. recession C. submission D. transmission 参考答案:B 答案解析:recession退步,经济衰退;concession让步,妥协;submission顺从,服从;transmission播送,发射(电波等)。句意:很难说经济将会繁荣还是衰退。