David found Elizabeth attractive not so much because of her beauty_because of her brain.
问题描述：
David found Elizabeth attractive not so much because of her beauty_because of her brain.
A that B but C as D which
我选择的是C 为什么答案会是B 弄不懂,
答
not（because of) .but(because of) 的结构,不是(因为）.而是（因为）.,只不过否定放在了because of 前面,不难理解啊