真心求教：prep2-103

The parachutelike 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

答案是D  我认为是B

但是我觉得以前og里做到类似题目时说in that是wordy，现在却又说because of being是wordy

我不懂~~   而且我认为D中they 指代会有歧义啊！！

1.根据at的一致关系可以留下bcd

2.一般来说being出错的概论比较大，看到基本上可以扔（gwd语），就留下d了

3.they虽然看似有点歧义，但比其他的选项好些，而且从语法上看句子主语没变，所以they指代的还是很清晰

不知道这样解释对不对，欢迎大家批判

In that > because

Because of being 错