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标题: 大全651 [打印本页]

作者: windcolour 时间: 2007-7-19 03:59
标题: 大全651

1. Since the 1930’s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly that the air passing over them would not become turbulent.

(A) wings, shaped so smoothly and perfectly

(B) wings, wings so smooth and so perfectly shaped

(D) wings, shaped in such a smooth and perfect manner（B）

请问C错在哪里了呢

作者: Zeldaw 时间: 2007-7-21 12:38
http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=15954

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