---- Would you like some more soup?---- _______. It is delicious, but I've had enough.
照样子，填一填。
金→（钢）→（铁） 衣→____→____ 耳→____→____
穴→____→____ 竹→____→____ 足→____→____
）与立方烷（
）的分子结构相似，如下图
：