Even their most ardent champions concede that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation's energy needs.
281.Even their most ardent champions concede that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation’s energy needs. (A) that no less than a technical or scientific breakthrough is necessary (B) that nothing other than a technical or scientific breakthrough is needed (C) that a technical or scientific breakthrough is necessary (D) the necessity for an occurrence of a technical or scientific breakthrough (E) the necessity for a technical or scientific breakthrough occurring 答案是C,我选了A。 难到这里的no less than去掉不算改变了原意么? 怎么说no less than也代表了仅仅的意思