语法与词汇 It is hard to tell whether we are going to have a boom in the economy or a _____.

【正确答案】 B

【答案解析】句意：很难预测我们的经济是繁荣还是衰退。recession后退，撤回；商业暂时衰退现象，萧条；与boom（繁荣）相对应。concession让步，妥协；授予。submission屈服，顺从。transmission传送，传递，传达。