第一句

今天的句子：（我用提醒你句子来了）

Understanding how languages emerge and survive holds great interest for researchers, since many languages are slipping away in increasing numbers around the world. Uncommon languages are better equipped to survive, researchers are learning, when young people are actively speaking them, whether in a family setting, in a school system, or in immersion programs.

（有哪些不认识的单词？猜一下这篇文章大概在讲什么？语序能不能调顺？）

先做思考题：（蓝色是一个层级目录：思考题，单词，背景，句子）

The high frequency of use facilitates the survival of uncommon language.

（判断：T or F）