摘要：-How much does a short?wave radio cost? -Sorry,I’m not sure.I’ll and tell you tomorrow. A.find B.know C.understand D.find out 解析:作“发现 解find out=to learn of;discover a fact that was hidden by study,calculation,inquiry,etc.通过研究.计算.询问来“获知.得知.探知 隐蔽起来的事实.而find=get or discover(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. 答案:D

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