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rosy_victory

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

这道题大家帮忙分析一下每个选项存在的问题好吗？谢谢。我主要没分清instead of 和rather than 的区别。如果A选项，instead of 加上 being at，能是一个正确的选项吗？谢谢

rosy_victory

怎么木人呢？顶起顶起~~~