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：
名词
1. 复古;回归If you say that something is a throwback to a former time, you mean that it is like something that existed a long time ago.
1. a reappearance of an earlier characteristic
Synonym: atavismreversion
2. an organism that has the characteristics of a more primitive type of that organism
Synonym: atavist
多通过句子记忆单词，而不是单独死记硬背。
