扫描二维码，直接登录
题库 / Prep2007E2-SC-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.
because they are attached to a cartilage rod at the elbow instead of
because of being attached to a cartilage rod at the elbow rather than at
in their attachment to a cartilage rod at the elbow instead of being attached at
in that they are attached to a cartilage rod at the elbow rather than at
in their being attached to a cartilage rod at the elbow instead of
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）。
1.instead of/rather than 都可以，但前后是介词短语比较：at the elbow和at the wrist
如果缺at，可能造成歧义：a cartilage rod和 wrist比较
2.because因为+造成两者不同的原因，in that在于+两者不同的具体方面
because of being笨拙
3.C：their attachment to a cartilage rod at the elbow和 being attached at the wrist.形式不对称
且，改变了句意，being attached at the wrist少了 to a cartilage rod
登录 或 注册 后可以参加讨论