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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
C. that a technical or scientific breakthrough is necessary
Choices A and B needlessly lengthen the statement by expressing the idea through negation: no less than and nothing other than could be dropped without loss of meaning.
这里我也有疑问, 解释上说[no less than 是多余, 可以删掉不失原义], 这如何说得通?
[至少]的意义在c中没有表达 |
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