分类：教育/科学-外语学习
问题：指代参考句子：Andthisprocessneednotbele 
参考句子：And this cess need not be left to the unconscious.Cartwright believes one can exercise conscious control over recurring bad dreams.As soon as you awaken,identify what is upsetting about the dream.Visualize how you would like it to end instead;the next time it occurs,tr参考句子：And this cess need not be left to the unconscious.Cartwright believes one can exercise conscious control over recurring bad dreams.As soon as you awaken,identify what is upsetting about the dream.Visualize how you would like it to end instead;the next time it occurs,try to wake up just enough to control its course.With much practice people can learn to,literally,（do it） in their sleep.do it 是指什么？
回答：这是考研英语阅读理解的原文。整篇文章讲述的是关于人们对于做梦的认识过程。你截取的这一段落讲述的是，梦可以通过练习得以控制。你在这里放置的"Do it"指代"control conscious"即控制自己的意识。