求助6月机井中的语法

dollphin

5.Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s {wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling} the insect to control how much heat energy is absorbed by its wings and how much is reflected away.
A.wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling
B: wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables
C: wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
D: wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables
E: wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable
我认为应该是D.因为从成分上看，u,layered constuction...,the same..,都是U的同位语。那么主语就应当是单数。排除a。b,把平行变成从句，出现that,不清楚指代；c,there should be a commer between wings and is,and the subject of enabling seems to be irides;D,correct subject and verb coordinate;e,should be enables,

dollphin

dingding!!

感谢各位前辈指教了!!!

非常感谢!!!

rt316

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=57388