[大后天考]请教大全281题，在PP3上遇到了。

dxwei2008 · 发表于 2004-1-3 18:16:00

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

请教大全281题，答案选C。
请高手详细讲解一下，为什么其他答案都不行啊？看上去好象没什么不好死的。我选的是B。

turtlechen · 发表于 2004-1-3 19:06:00

Please check OG-242!

本贴相关题目 OG (UMYI)

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[大后天考]请教大全281题，在PP3上遇到了。

[大后天考]请教大全281题，在PP3上遇到了。

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