现在，学生在第一个学期结束后就可以申请转专业，并在进入大四之前不限制次数。因为很多学生在中学阶段并不了解大学是什么样子，填报志愿时的考虑，和进入大学后的认识是不一样的。专业名字听起来怎么样，和实际学起来怎么样，往往也有差距。经过一学期的学习，学生对所在专业、学校整体情况，以及自己真正想去的专业，都有了更清晰的认识。这时候转专业比较合适，也不耽误学生按时毕业。
- 子节点i的父节点: (i-1)/2，推荐阅读新收录的资料获取更多信息
，推荐阅读新收录的资料获取更多信息
The festival, due to take place from 17 to 19 April, will now go ahead without the backing of the US retail company, after a mutual decision by organisers and Amazon to end their partnership.，推荐阅读新收录的资料获取更多信息
We came away impressed with the technology when we gave it a go last year. We even said that if "3D had been like this all along, people would be much more receptive." The games look great and the displays include head tracking so users don't have to constantly struggle to find the one sweet spot (I'm looking at you, Nintendo 3DS.)
Combinatory logic