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标题: [求助]OG-242 [打印本页]

作者: c_violet2000 时间: 2005-3-9 12:56
标题: [求助]OG-242

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

答案是C,解释说no less than 可以省掉,我不懂no less than在这里表达

什么意思,我觉得应该对technical or scientific breakthrough有限制

作用,为什么可以随随便便就去掉?

[此贴子已经被作者于2005-3-9 12:56:33编辑过]

作者: ford424 时间: 2005-3-9 13:50
以前有人讨论了,mm搜一下

作者: c_violet2000 时间: 2005-3-9 14:08
XIEXIE!have understood now

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