Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

剑20什么时候出版呢?很多考鸭已经追着小雅问了很多遍了，一般情况下根据剑桥大学出版社的出版周期，剑桥雅思真题20会在今年6月左右正式上线。但是这才2月份，剑20题目就狂奔而来啦！