---How much a short-wave radio cost?---Sorry. I'm not sure. I'll ________ and tell you tomorrow.A.findB.knowC.understandD.find out
网友回答
D解析作“发现”解，find out=to learn or discover a fact that was hidden by study，calculation，etc．通过研究、计算、询问“获知、得知、探知”隐藏起来的事实；而find＝ get or discovered（sb．/sth. not lost, forgotten, etc．） after search, experience, effort通过搜寻、体验、努力“找到、发现某人或某物”。