介绍:
节目完整文本和更多干货内容，请关注微信公众号：备考族
学习问题可咨（gou）询（da）助教Sara微信：beikaozu02
本期长难句：
As so often, the past holds the key to the future: we have now identified enough of the long-term patterns shaping the history of the planet, and our species, to make evidence-based forecasts about the situations in which our descendants will find themselves.
大家还在听
