[求助]请教2题白勇修辞

tina_aya

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

答案是,b我选a为什么

2.
Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to

答案是c我选a,为什么such as 后面要加to

JerryGuan

第一题先不说，楼主你能说说为什么要选A吗？越详细越好！

第二题：

首先，不管是such as 还是like，前面的food allergies和后面的milk不是一个概念，所以，要在后面作一些变换；C中的to milk其实是省略，应该是(C) to identify food allergies, such as (allerge) to milk；碰到这类题，一定要细心比较差异处，反复核对划线和未划线部分的对应/平行关系。

tina_aya

我觉得选项a的shaped不是就有修饰wings,wings shaped so smmothly and perfectly,所以我觉得选项b不够简洁,且smoothly变成了smooth,所以我不选他

谢谢jerryguan mm 细心解释,我绝得你好利害喔,希望可以变成跟你依样利害