New ideas sometimes have to wait for years before they are___

问题描述:

New ideas sometimes have to wait for years before they are___

put into action (被)驻使行动

proved证实
accepted接受
demonstrated证实
certified证实
justified证实

New ideas sometimes have to wait for years before they are (right)?

found
在它们被发现(想出)之前,新的想法有时必须等待几年。

proved
新的观点要好几年后才能被证明(是对的)