点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源，包括PDF教材和音频练习，方便课后复习：
形容词
名词
1. 化石A fossil is the hard remains of a prehistoric animal or plant that are found inside a rock.
1. the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil
2. someone whose style is out of fashion
Synonym: dodofogyfogey
多通过句子记忆单词，而不是单独死记硬背。
