单选题
Hardly a week goes by without some advance in technology that would have seemed
incredible
50 years ago.
【正确答案】
B
【答案解析】[解析] incredible意为“不可相信的；难以置信的”，如an incredible idea/excuse(不可信的想法/借口)。其意义与B项hard to believe完全相同，故选项B正确。其他选项意义为：hard to imagine“难以想象”，hard to invent“难以发明”，hard to understand“难以理解”。