og242我的问题没人提

5757575

242. 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
a错误,og说是由于 no less than could be droped without loss of the meaning,我怎么觉得no less than 是大于等于的意思,后面应加are,因为这个原因才错呢,我的理解一定有不对,请大家指出

joe11

no less than a breakthrough  和 a breakthrough 在这里没有区别。no less than 这里没有比较的意思，只是强调。breakthrough 后面用 is,不用 are.