Since the 1930s 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.


wings, shaped so smoothly and perfectly

wings, wings so smooth and so perfectly shaped

wings that are shaped so smooth and perfect

wings, shaped in such a smooth and perfect manner

wings, wings having been shaped smoothly and perfectly so

加入错题本 分享
纠错
考题讲解
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
求讲解

登录 或 注册 后可以参加讨论

查看全部40条讨论
GMATAdvanced-SC