请教prep07的103题，有关being的使用，The parachute like membranes

whatupbro233

The parachute like membranes of Africa’s scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
A. because they are attached to a cartilage rod at the elbow instead of
B. because of being attached to a cartilage rod at the elbow rather than at
C. in their attachment to a cartilage rod at the elbow instead of being attached at
D. in that they are attached to a cartilage rod at the elbow rather than at
E. in their being attached to a cartilage rod at the elbow instead of

OA为D，这里because和in that的split我已经了解了。想要咨询的是B中的being，我觉得B中的being是没问题的，being attached to a cartilage rod整个作为一个noun phrase，请NN指点。（曼哈顿上有人也问了这个being但ron只是说being有问题而没解释 ）

whatupbro233

时不我待 发表于 2017-4-28 04:28
建议楼主可以看看RON在2010 September 23,的视频，其中对于because of 有非常精彩的解释。https://vimeo.co ...

感谢您的建议，这里我主要想问的是being，不过我先去看看ron视频里有没有说

时不我待

建议楼主可以看看RON在2010 September 23,的视频，其中对于because of 有非常精彩的解释。https://vimeo.com/15781353
如若看不到视频，有xcdamon大神看RON视频的总结笔记。http://forum.chasedream.com/thread-1279178-1-1.html

楼主加油！