OG 106 序号可能和大家的不同，抱歉

我手上的是旧版OG，所以序号可能和大家讨论的不太一样，请多多包涵。遇到这样一道题：

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) ......

B) wings, wings so smooth and so perfectly shaped

C) wings that are shaped so smooth and perfect

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

E) wings, wings having been shaped smoothly and perfectly so

参考答案选B，可是我觉smooth显然不对，我选A，请大家指教！

应该是B。smooth修饰wings表示机翼很平滑，用adj. 而wings是被perfectly shaped的，所以用adv.修饰shaped. 这题有比较大的迷惑性